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Prof. Dr. Luyi Sun
Institute of Materials Science, University of Connecticut, 97 North Eagleville Road, Unit 3136, Storrs, CT 06269-3136, USA

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Journal article
Published: 04 August 2021 in Gels
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Host–guest interaction, being reversible and stimuli-responsive, is ideal to be applied to the design of hydrogels. We created a gelation system based on the host–guest interactions between the adamantyl groups and β-cyclodextrin (β-CD) polymer. N,N,N-trimethyl-1-adamantylammonium hydroxide (TriMAA) cations were attached to the pre-exfoliated α-zirconium phosphate (α-ZrP) nanosheets by ionic bonding through a displacement reaction with the exfoliating agents. The exfoliated α-ZrP nanosheets with adamantyl groups directly or indirectly attached to the surface act as reversible high-functionality crosslinkers within the β-CD polymer. The gelation occurred at a host-to-guest ratio of 1:10 or 1:5 at room temperature within minutes. The agents used to exfoliate α-ZrP can tailor the surface of the resultant α-ZrP nanosheets and the ionic strength of the system, which directly affects the further gelation results. Plus, the exfoliating agent cations may generate a host-and-guest interaction with the β-CD polymer as well. This gelation process without covalent bonding formation should help fellow researchers to better understand the gelation system and host–guest interactions.

ACS Style

Hao Ding; Sana Khan; Jingjing Liu; Luyi Sun. Gelation Based on Host–Guest Interactions Induced by Multi-Functionalized Nanosheets. Gels 2021, 7, 106 .

AMA Style

Hao Ding, Sana Khan, Jingjing Liu, Luyi Sun. Gelation Based on Host–Guest Interactions Induced by Multi-Functionalized Nanosheets. Gels. 2021; 7 (3):106.

Chicago/Turabian Style

Hao Ding; Sana Khan; Jingjing Liu; Luyi Sun. 2021. "Gelation Based on Host–Guest Interactions Induced by Multi-Functionalized Nanosheets." Gels 7, no. 3: 106.

Research article
Published: 17 July 2021 in Advanced Optical Materials
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Designing photochromic systems that exhibit tunable print/erase responses is seldom studied but critical to the implementation of rewritable paper. Previous systems printed information with photocatalysts limited to specific wavelengths and light sources and rarely considered how polymers used in film formation affect erasing of information. Herein, different visible/UV light responses are achieved by engineering the formation of oxygen vacancy defects in titanium dioxide/reduced graphene oxide composite photocatalysts. Defects are manipulated during synthesis by controlling the water concentration in a mixed solvent system, which leads to tunable photochromic response of redox dyes. Furthermore, because the accessibility of ambient oxygen directly impacts the kinetics of recoloration, tailoring the oxygen barrier properties of polyvinyl alcohol via modulating inherent polymer structure as well as the external environment, the recoloration can be further tuned to meet various application purposes. The resulting insight will assist fellow researchers in tailoring defects in photocatalyst systems for superior functional design.

ACS Style

Andrew T. Smith; Xiaolong Liu; Hao Ding; Songshan Zeng; Brandon L. Williams; Anna Marie Lachance; Chanhyun Park; Philip A. Gitman; Akhil Kokkula; Xueni Huang; Steven L. Suib; Huidan Zeng; Ting Tan; Luyi Sun. Tailoring Defects in Photocatalysts by Engineering Solvent Interactions for Highly Active and Responsive Color Switching. Advanced Optical Materials 2021, 2101115 .

AMA Style

Andrew T. Smith, Xiaolong Liu, Hao Ding, Songshan Zeng, Brandon L. Williams, Anna Marie Lachance, Chanhyun Park, Philip A. Gitman, Akhil Kokkula, Xueni Huang, Steven L. Suib, Huidan Zeng, Ting Tan, Luyi Sun. Tailoring Defects in Photocatalysts by Engineering Solvent Interactions for Highly Active and Responsive Color Switching. Advanced Optical Materials. 2021; ():2101115.

Chicago/Turabian Style

Andrew T. Smith; Xiaolong Liu; Hao Ding; Songshan Zeng; Brandon L. Williams; Anna Marie Lachance; Chanhyun Park; Philip A. Gitman; Akhil Kokkula; Xueni Huang; Steven L. Suib; Huidan Zeng; Ting Tan; Luyi Sun. 2021. "Tailoring Defects in Photocatalysts by Engineering Solvent Interactions for Highly Active and Responsive Color Switching." Advanced Optical Materials , no. : 2101115.

Journal article
Published: 17 July 2021 in Nano Materials Science
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Polyvinyl alcohol (PVA)/laponite (LP) nanocomposite coatings were fabricated via a facile one-step coassembly process. The formed nanocoatings contain a high concentration of LP nanosheets, which can be well aligned along the substrate surface during the coassembly process. Due to the highly orientated structure, the flexible nanocoatings exhibit ultra-high transparency and superior mechanical properties, and can also act as excellent gas barriers. Such nanocoatings can be exceptional candidates for a variety of applications, such as food packaging.

ACS Style

Jingjing Liu; Sonia E. Chavez; Hao Ding; Maria M. Farooqui; Zaili Hou; Sharon Lin; Thomas D. D'Auria; Julia M. Kennedy; Anna Marie LaChance; Luyi Sun. Ultra-transparent nanostructured coatings via flow-induced one-step coassembly. Nano Materials Science 2021, 1 .

AMA Style

Jingjing Liu, Sonia E. Chavez, Hao Ding, Maria M. Farooqui, Zaili Hou, Sharon Lin, Thomas D. D'Auria, Julia M. Kennedy, Anna Marie LaChance, Luyi Sun. Ultra-transparent nanostructured coatings via flow-induced one-step coassembly. Nano Materials Science. 2021; ():1.

Chicago/Turabian Style

Jingjing Liu; Sonia E. Chavez; Hao Ding; Maria M. Farooqui; Zaili Hou; Sharon Lin; Thomas D. D'Auria; Julia M. Kennedy; Anna Marie LaChance; Luyi Sun. 2021. "Ultra-transparent nanostructured coatings via flow-induced one-step coassembly." Nano Materials Science , no. : 1.

Original research
Published: 12 July 2021 in Advanced Composites and Hybrid Materials
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A one-pot self-assembled nanocoating with a well-defined nanostructure was created consisting of polyvinyl alcohol (PVA) and montmorillonite (MMT) and applied to double-walled corrugated cardboard (CB) via spray coating. X-ray diffraction (XRD) analysis revealed the intercalation of PVA into the interstitial spaces of the MMT nanosheets and the alignment of the nanosheets. Vertical burning test, surface burning test, and horizontal burning test showed marked reductions in afterflame time, afterglow time, and flame spread, displaying quick self-extinguishing behaviors. Scanning electron microscopy (SEM) images revealed a uniform coating of the surface of CB before burning tests. After burning, the coated CB samples formed a dense char layer that protected the underlying fibers. A PVA/MMT nanocoating applied via spray coating greatly inhibited flame spread and improved flame retardancy. A one-pot coassembled nanocoating consisting of polyvinyl alcohol and montmorillonite was developed to significantly improve the flame retardancy of cardboard.

ACS Style

Brandon L. Williams; Hao Ding; Zaili Hou; Patrick O. Paul; Frank A. Lewis; Andrew T. Smith; Luyi Sun. Highly efficient polyvinyl alcohol/montmorillonite flame retardant nanocoating for corrugated cardboard. Advanced Composites and Hybrid Materials 2021, 1 -8.

AMA Style

Brandon L. Williams, Hao Ding, Zaili Hou, Patrick O. Paul, Frank A. Lewis, Andrew T. Smith, Luyi Sun. Highly efficient polyvinyl alcohol/montmorillonite flame retardant nanocoating for corrugated cardboard. Advanced Composites and Hybrid Materials. 2021; ():1-8.

Chicago/Turabian Style

Brandon L. Williams; Hao Ding; Zaili Hou; Patrick O. Paul; Frank A. Lewis; Andrew T. Smith; Luyi Sun. 2021. "Highly efficient polyvinyl alcohol/montmorillonite flame retardant nanocoating for corrugated cardboard." Advanced Composites and Hybrid Materials , no. : 1-8.

Research
Published: 23 June 2021 in Journal of the Australian Ceramic Society
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Many studies have been conducted to improve the strength and damage resistance of phosphosilicate glasses via the introduction of Li2O through an appropriate ion-exchange process. However, very limited investigations can unveil the effect of the comprehensive mechanism of two-step ion-exchange process on the mechanical properties of glass. Increasing the amount of Li2O in phosphosilicate glasses increases the hardness and decreases the depth of ion-exchange layers of other alkali ions. With a two-step ion-exchange treatment, the hardness of glass has been enhanced by 28.3% on average. Moreover, the phosphosilicate glass system was found to achieve the maximum compression stress on optimizing the Li2O content for a glass surface after the two-step ion-exchange treatment. The mechanism of strengthening the mechanical properties was then described using atomic packing theory. This investigation will pave the way for efficient composition design for phosphosilicate glasses to meet mechanical performance requirements of various display-related and engineering applications.

ACS Style

Qi Jiang; Jingtao Yan; Ling Wang; Chunyu Chen; Andrew T. Smith; Luyi Sun; Huidan Zeng. Chemical strengthening of Li+-containing phosphosilicate glass via a two-step ion-exchange process. Journal of the Australian Ceramic Society 2021, 57, 1285 -1290.

AMA Style

Qi Jiang, Jingtao Yan, Ling Wang, Chunyu Chen, Andrew T. Smith, Luyi Sun, Huidan Zeng. Chemical strengthening of Li+-containing phosphosilicate glass via a two-step ion-exchange process. Journal of the Australian Ceramic Society. 2021; 57 (4):1285-1290.

Chicago/Turabian Style

Qi Jiang; Jingtao Yan; Ling Wang; Chunyu Chen; Andrew T. Smith; Luyi Sun; Huidan Zeng. 2021. "Chemical strengthening of Li+-containing phosphosilicate glass via a two-step ion-exchange process." Journal of the Australian Ceramic Society 57, no. 4: 1285-1290.

Research article
Published: 20 June 2021 in Advanced Functional Materials
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Leather is made from the skin of animals and possesses special micro- and nanostructures. Due to the high breathability, durability, strength, elasticity, and softness, leather is widely used in daily life, and is an ideal substrate for future multi-functional wearable smart devices. Herein, two leather-based multi-stimuli responsive chromic devices denoted as UV/thermo/electro chromic device and UV sensor are developed. The UV/thermo/electro chromic device demonstrates instantaneous and reversible chromic responses to applied UV radiation, heat, and electrical voltage with different color changing styles. The pattern design with the assistance of 3D printed molds and the broad selection of dyes/pigments endow the device with high design flexibility and wide applicability. The leather-based UV sensor exhibits a change in color gradient when exposed to UV radiation with different intensities. For more versatile color options, inactive pigments/dyes can be mixed with stimuli-responsive ones in this system. Coating the leather surface with a polyacrylic finishing agent is also conducted, which is a practical and effective method to protect the pigments and/or dyes in the leather, and improves the usability/durability of the devices. This study opens a new avenue to design and develop wearable devices and individual customization/anti-counterfeiting of leather products.

ACS Style

Lu Jia; Songshan Zeng; Hao Ding; Andrew T. Smith; Anna Marie LaChance; Maria M. Farooqui; Dangge Gao; Jianzhong Ma; Luyi Sun. Leather‐Based Multi‐Stimuli Responsive Chromisms. Advanced Functional Materials 2021, 31, 2104427 .

AMA Style

Lu Jia, Songshan Zeng, Hao Ding, Andrew T. Smith, Anna Marie LaChance, Maria M. Farooqui, Dangge Gao, Jianzhong Ma, Luyi Sun. Leather‐Based Multi‐Stimuli Responsive Chromisms. Advanced Functional Materials. 2021; 31 (35):2104427.

Chicago/Turabian Style

Lu Jia; Songshan Zeng; Hao Ding; Andrew T. Smith; Anna Marie LaChance; Maria M. Farooqui; Dangge Gao; Jianzhong Ma; Luyi Sun. 2021. "Leather‐Based Multi‐Stimuli Responsive Chromisms." Advanced Functional Materials 31, no. 35: 2104427.

Research article
Published: 15 June 2021 in Langmuir
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Inspired by hook-and-loop fasteners, we designed a hydrogel network containing α-zirconium phosphate (ZrP) two-dimensional nanosheets with a high density of surface hydroxyl groups serving as nanopatches with numerous “hooks,” while polymer chains with plentiful amine functional groups serve as “loops.” Our multiscale molecular simulations confirm that both the high density of hydroxyl groups on nanosheets and the large number of amine functional groups on polymer chains are essential to achieve reversible interactions at the molecular scale, functioning as nano hook-and-loop fasteners to dissipate energy. As a result, the synthesized hydrogel possesses superior stretchability (>2100% strain), resilience to compression (>90% strain), and durability. Remarkably, the hydrogel can sustain >5000 cycles of compression with torsion in a solution mimicking synovial fluid, thus promising for potential biomedical applications such as artificial articular cartilage. This hook-and-loop model can be adopted and generalized to design a wide range of multifunctional materials with exceptional mechanical properties.

ACS Style

Fuchuan Ding; Hao Ding; Zhiqiang Shen; Lei Qian; Jun Ouyang; Songshan Zeng; Thomas A. P. Seery; Jiao Li; Guanzheng Wu; Sonia E. Chavez; Andrew T. Smith; Lan Liu; Ying Li; Luyi Sun. Super Stretchable and Compressible Hydrogels Inspired by Hook-and-Loop Fasteners. Langmuir 2021, 37, 7760 -7770.

AMA Style

Fuchuan Ding, Hao Ding, Zhiqiang Shen, Lei Qian, Jun Ouyang, Songshan Zeng, Thomas A. P. Seery, Jiao Li, Guanzheng Wu, Sonia E. Chavez, Andrew T. Smith, Lan Liu, Ying Li, Luyi Sun. Super Stretchable and Compressible Hydrogels Inspired by Hook-and-Loop Fasteners. Langmuir. 2021; 37 (25):7760-7770.

Chicago/Turabian Style

Fuchuan Ding; Hao Ding; Zhiqiang Shen; Lei Qian; Jun Ouyang; Songshan Zeng; Thomas A. P. Seery; Jiao Li; Guanzheng Wu; Sonia E. Chavez; Andrew T. Smith; Lan Liu; Ying Li; Luyi Sun. 2021. "Super Stretchable and Compressible Hydrogels Inspired by Hook-and-Loop Fasteners." Langmuir 37, no. 25: 7760-7770.

Research article
Published: 25 May 2021 in Inorganic Chemistry
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The exfoliation of microcrystalline α-zirconium phosphate (α-ZrP) in an organic solvent is very difficult to achieve. Surprisingly, the addition of tetra(n-butyl)ammonium hydroxide (TBAOH) into a methanol dispersion of a nanosized α-ZrP brings about the complete exfoliation of nanosheets. To understand the mechanism, we examined the stepwise intercalation/exfoliation of the nanosized α-ZrP using TBAOH in four different solvents (water, methanol, ethanol, and butanol). Propionate groups on the edge of the nanosized α-ZrP prevent TBA cations from entering the galleries. Due to the formation of unstable solvent-intercalated α-ZrP with an increased interlayer distance in methanol and ethanol, TBA cations can overcome the steric hindrance and move into nanosheet layers to exchange with solvent molecules. However, the movability of the cations into the center of the galleries is preferred at a certain interlayer distance range, which leads to exfoliation of α-ZrP in methanol but intercalation only in ethanol. In water, in the beginning, neither intercalation nor exfoliation by TBA cations occurs. An additional amount of TBAOH causes the deformation of propionate groups and removes the barriers on the edges, followed by late intercalation and then exfoliation. On the other hand, butanol, as the solvent, is bulky and effectively limits the intercalation behavior of TBA cations. The weaker polarity of ethanol and butanol, compared with water and methanol, lowers the ion interactions in the solvent, which is another reason why they do not lead to exfoliation.

ACS Style

Hao Ding; Sana T. Khan; Songshan Zeng; Luyi Sun. Exfoliation of Nanosized α-Zirconium Phosphate in Methanol. Inorganic Chemistry 2021, 60, 8276 -8284.

AMA Style

Hao Ding, Sana T. Khan, Songshan Zeng, Luyi Sun. Exfoliation of Nanosized α-Zirconium Phosphate in Methanol. Inorganic Chemistry. 2021; 60 (11):8276-8284.

Chicago/Turabian Style

Hao Ding; Sana T. Khan; Songshan Zeng; Luyi Sun. 2021. "Exfoliation of Nanosized α-Zirconium Phosphate in Methanol." Inorganic Chemistry 60, no. 11: 8276-8284.

Original research
Published: 15 May 2021 in Advanced Composites and Hybrid Materials
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Photoluminescent mesoporous silica with a surface area of 840 m2/g, pore diameter of 4.8 nm, and pore volume of 0.69 cm3/g was synthesized through the calcination of Pluronic 123 (P123) and cetyltrimethylammonium bromide (CTAB) co-templated mesoporous silica at 400 °C for 2 h. The photoluminescence is from the trapped carbon derived from the co-templates.

ACS Style

Yanxian Zeng; Qijie Li; Xiaochun Niu; Suying Wang; Andrew T. Smith; Mingtao Zheng; Luyi Sun; Weixing Wang. Facile synthesis of photoluminescent mesoporous silica. Advanced Composites and Hybrid Materials 2021, 1 -4.

AMA Style

Yanxian Zeng, Qijie Li, Xiaochun Niu, Suying Wang, Andrew T. Smith, Mingtao Zheng, Luyi Sun, Weixing Wang. Facile synthesis of photoluminescent mesoporous silica. Advanced Composites and Hybrid Materials. 2021; ():1-4.

Chicago/Turabian Style

Yanxian Zeng; Qijie Li; Xiaochun Niu; Suying Wang; Andrew T. Smith; Mingtao Zheng; Luyi Sun; Weixing Wang. 2021. "Facile synthesis of photoluminescent mesoporous silica." Advanced Composites and Hybrid Materials , no. : 1-4.

Research article
Published: 11 April 2021 in Polymers for Advanced Technologies
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With high biocompatibility and pH‐sensitivity, hybrid hydrogels of chitosan (CS) have been widely used in sensor, drug release systems, adsorption, agriculture, and other fields. Herein, a poly(acrylamide‐co‐acrylic acid)/chitosan [P(AM‐co‐AA)/CS] hydrogel with semi‐interpenetrating (semi‐IPN) network was synthesized through in situ copolymerization of acrylamide (AM), N,N′‐methylene‐bisacrylamide (MBAA) and acrylic acid (AA) solution of chitosan using potassium persulfate (KPS) and sodium bisulfite (SBS) as oxidation‐reduction co‐initiators. CS‐AA complex monomer was prepared by dissolving CS in AA solution. Meanwhile, MBAA was used as a crosslinker to enhance the strength of the resulted hybrid hydrogels via introducing chemical crosslinking to the substrate P(AM‐co‐AA) copolymer. The morphology of the freeze‐dried sample of P(AM‐co‐AA)/CS hydrogel shows dense interconnected pores. When the CS content is 2.4%, the P(AM‐co‐AA)/CS hydrogel has a compressive stress of 5.06 MPa at strain of 90.0% and a tensile strength of 161.71 kPa at strain of 1082.0%. The CP(AM‐co‐AA)/CS hydrogel also demonstrates extraordinary antifatigue property under cyclic compression of 85%. Because of the outstanding mechanical properties, a capacitive pressure sensor using P(AM‐co‐AA)/CS hydrogel as a dielectric with good durability and linearity at low operating voltage was fabricated. Besides, the water uptake of the P(AM‐co‐AA)/CS hydrogels is pH‐sensitive, and the hydrogels could serve as a matrix for loading of ranitidine hydrochloride with controlled release under different pH environments.

ACS Style

Xiaoyan Hong; Hao Ding; Jiao Li; Yuanyuan Xue; Luyi Sun; Fuchuan Ding. Poly(acrylamide‐co‐acrylic acid)/chitosan semi‐interpenetrating hydrogel for pressure sensor and controlled drug release. Polymers for Advanced Technologies 2021, 1 .

AMA Style

Xiaoyan Hong, Hao Ding, Jiao Li, Yuanyuan Xue, Luyi Sun, Fuchuan Ding. Poly(acrylamide‐co‐acrylic acid)/chitosan semi‐interpenetrating hydrogel for pressure sensor and controlled drug release. Polymers for Advanced Technologies. 2021; ():1.

Chicago/Turabian Style

Xiaoyan Hong; Hao Ding; Jiao Li; Yuanyuan Xue; Luyi Sun; Fuchuan Ding. 2021. "Poly(acrylamide‐co‐acrylic acid)/chitosan semi‐interpenetrating hydrogel for pressure sensor and controlled drug release." Polymers for Advanced Technologies , no. : 1.

Review
Published: 02 April 2021 in Advanced Functional Materials
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Today, there is an urgent demand to develop all solid‐state lithium‐ion batteries (LIBs) with a high energy density and a high degree of safety. The core technology in solid‐state batteries is a solid‐state electrolyte, which determines the performance of the battery. Among all the developed solid electrolytes, composite polymer electrolytes (CPEs) have been deemed as one of the most viable candidates because of their comprehensive performance. In this review, the limitations of traditional solid polymer electrolytes and the recent progress of CPEs are introduced. The effect and mechanism of inorganic fillers to the various properties of electrolytes are discussed in detail. Meanwhile, the factors affecting ionic conductivity are intensively reviewed. The recent representative CPEs with synthetic fillers and natural clay‐based fillers are highlighted because of their great potential. Finally, the remaining challenges and promising prospects are outlined to provide strategies to develop novel CPEs for high‐performance LIBs.

ACS Style

Peng Fan; Hao Liu; Vladimir Marosz; Nia T. Samuels; Steven L. Suib; Luyi Sun; Libing Liao. High Performance Composite Polymer Electrolytes for Lithium‐Ion Batteries. Advanced Functional Materials 2021, 31, 2101380 .

AMA Style

Peng Fan, Hao Liu, Vladimir Marosz, Nia T. Samuels, Steven L. Suib, Luyi Sun, Libing Liao. High Performance Composite Polymer Electrolytes for Lithium‐Ion Batteries. Advanced Functional Materials. 2021; 31 (23):2101380.

Chicago/Turabian Style

Peng Fan; Hao Liu; Vladimir Marosz; Nia T. Samuels; Steven L. Suib; Luyi Sun; Libing Liao. 2021. "High Performance Composite Polymer Electrolytes for Lithium‐Ion Batteries." Advanced Functional Materials 31, no. 23: 2101380.

Research article
Published: 24 February 2021 in Advanced Functional Materials
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A versatile wrinkle‐based micropatterned system with a film‐substrate structure is proposed, which contains a hydrophilic film of polyvinyl alcohol or its composite with laponite and a hydrophobic substrate of polydimethylsiloxane or its composite with carbon black. The wrinkled system features high design flexibility and multistimuli responsiveness, which can be activated by various mechanical methods, including vertical press or scratch, gentle stretch‐and‐release, bend, or analogous magneto‐mechanical and electro‐mechanical modes. The resultant wrinkles possess 1) instantaneous and reversible strain/moisture/light responsive optical modulation; 2) tunable dynamics for the aforementioned strain/moisture/light response;3) tailorable amplitude/wavelength; 4) unique surface morphologies from the coupling of wrinkles and cracks; 5) excellent reversibility and durability. A variety of applications are demonstrated based on this system, including 1) a moisture erasable highly sensitive pressure responsive device and pattern replicator with a high fidelity; 2) a moisture erasable scratch/magneto‐mechanical re‐writable tablet; 3) an electro‐mechanical controllable smart window with an ultra‐sensitive strain responsive transmittance modulation and a low operating voltage; 4) various types of strain responsive, moisture erasable, and laser writable information recording/encryption devices. This work provides new routes for designing innovative wrinkled systems triggered by diverse mechanical fashions and can decode multiple environmental stimuli into optical signals for widespread application.

ACS Style

Songshan Zeng; Kuangyu Shen; Shuliang Li; Rui Li; Zaili Hou; Xin Zhang; William R. T. Tait; Tomoko Kajiwara; Atsushi Takahara; Andrew T. Smith; Michael D. Jones; Dianyun Zhang; Luyi Sun. Tailoring Multistimuli Responsive Micropatterns Activated by Various Mechanical Modes. Advanced Functional Materials 2021, 31, 2100612 .

AMA Style

Songshan Zeng, Kuangyu Shen, Shuliang Li, Rui Li, Zaili Hou, Xin Zhang, William R. T. Tait, Tomoko Kajiwara, Atsushi Takahara, Andrew T. Smith, Michael D. Jones, Dianyun Zhang, Luyi Sun. Tailoring Multistimuli Responsive Micropatterns Activated by Various Mechanical Modes. Advanced Functional Materials. 2021; 31 (18):2100612.

Chicago/Turabian Style

Songshan Zeng; Kuangyu Shen; Shuliang Li; Rui Li; Zaili Hou; Xin Zhang; William R. T. Tait; Tomoko Kajiwara; Atsushi Takahara; Andrew T. Smith; Michael D. Jones; Dianyun Zhang; Luyi Sun. 2021. "Tailoring Multistimuli Responsive Micropatterns Activated by Various Mechanical Modes." Advanced Functional Materials 31, no. 18: 2100612.

Paper
Published: 18 February 2021 in Journal of Materials Chemistry A
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A novel strategy to synthesize a glycerol-hydrogel with outstanding anti-freezing and shape memory properties was developed. A glycerol-hydrogel actuator was fabricated to achieve a programmable actuating process at subzero temperatures.

ACS Style

Meiling Guo; Jiao Yan; Xi Yang; Jingjuan Lai; Peng An; Yuanpeng Wu; Zhenyu Li; Weiwei Lei; Andrew T. Smith; Luyi Sun. A transparent glycerol-hydrogel with stimuli-responsive actuation induced unexpectedly at subzero temperatures. Journal of Materials Chemistry A 2021, 9, 7935 -7945.

AMA Style

Meiling Guo, Jiao Yan, Xi Yang, Jingjuan Lai, Peng An, Yuanpeng Wu, Zhenyu Li, Weiwei Lei, Andrew T. Smith, Luyi Sun. A transparent glycerol-hydrogel with stimuli-responsive actuation induced unexpectedly at subzero temperatures. Journal of Materials Chemistry A. 2021; 9 (12):7935-7945.

Chicago/Turabian Style

Meiling Guo; Jiao Yan; Xi Yang; Jingjuan Lai; Peng An; Yuanpeng Wu; Zhenyu Li; Weiwei Lei; Andrew T. Smith; Luyi Sun. 2021. "A transparent glycerol-hydrogel with stimuli-responsive actuation induced unexpectedly at subzero temperatures." Journal of Materials Chemistry A 9, no. 12: 7935-7945.

Journal article
Published: 10 February 2021 in Materials Today
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Inspired by cephalopods, we design a hybrid structure comprised of a rigid film with a low thermal emissivity and a substrate with a high thermal emissivity combined with a stretchable heater. The film’s topography is characterized by distributed strain-dependent micro-cracks, enabling the exposure of the substrate to be tuned by the applied strain. Thus, the effective surface thermal emissivity originating from the combination of the film and the exposed substrate can be instantaneously and reversibly modulated simply via mechanical means. The system exhibits various pronounced advantages, including ease of fabrication, low working temperature, broad emissivity modulation range, observing angle independence, excellent reversibility, instantaneous response, high strain sensitivity, feasibility for patterning and multiplexing, and autonomous actuation. Additionally, the system demonstrates intriguing thermographic-based applications in finger motion sensing, information encryption, multiplexing display, and thermal camouflage. Therefore, this work can facilitate the invention of next-generation thermal modulators with autonomous, on-demand, and board-range control.

ACS Style

Songshan Zeng; Kuangyu Shen; Yin Liu; Aimee P. Chooi; Andrew T. Smith; Shihao Zhai; Zi Chen; Luyi Sun. Dynamic thermal radiation modulators via mechanically tunable surface emissivity. Materials Today 2021, 45, 44 -53.

AMA Style

Songshan Zeng, Kuangyu Shen, Yin Liu, Aimee P. Chooi, Andrew T. Smith, Shihao Zhai, Zi Chen, Luyi Sun. Dynamic thermal radiation modulators via mechanically tunable surface emissivity. Materials Today. 2021; 45 ():44-53.

Chicago/Turabian Style

Songshan Zeng; Kuangyu Shen; Yin Liu; Aimee P. Chooi; Andrew T. Smith; Shihao Zhai; Zi Chen; Luyi Sun. 2021. "Dynamic thermal radiation modulators via mechanically tunable surface emissivity." Materials Today 45, no. : 44-53.

Journal article
Published: 20 January 2021 in Colloids and Surfaces A: Physicochemical and Engineering Aspects
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Superamphiphobic surface has broad applications in anti-fouling, self-cleaning, and anti-corrosion. A superamphiphobic fluorinated silica (F-SiO2) sol with a core-shell structure was prepared by the sol-gel method through two steps: first, pristine silica particles with a diameter of ca. 100 nm was synthesized by hydrolyzing tetraethyl orthosilicate (TEOS), using ethanol as the solvent and NH3·H2O as the catalyst. Then perfluorodecyl groups were grafted onto the surface of the pristine silica nanoparticles by introducing and hydrolyzing 1H,1H,2H,2H-triethoxydsilane (FAS-17). The characterization results showed successful grafting of perfluorodecyl groups on silica, leading to a transformation of the silica sol from hydrophilic to superamphiphobic, with water and n-hexadecane contact angles of 161° and 156°, respectively. The epoxy/F-SiO2 composite coating by mixing F-SiO2 with epoxy resin showed excellent water-repellency and anti-corrosion properties.

ACS Style

Chunlin Guo; Hao Ding; Meixia Xie; Heqiang Zhang; Xiaoyan Hong; Luyi Sun; Fuchuan Ding. Multifunctional superamphiphobic fluorinated silica with a core-shell structure for anti-fouling and anti-corrosion applications. Colloids and Surfaces A: Physicochemical and Engineering Aspects 2021, 615, 126155 .

AMA Style

Chunlin Guo, Hao Ding, Meixia Xie, Heqiang Zhang, Xiaoyan Hong, Luyi Sun, Fuchuan Ding. Multifunctional superamphiphobic fluorinated silica with a core-shell structure for anti-fouling and anti-corrosion applications. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2021; 615 ():126155.

Chicago/Turabian Style

Chunlin Guo; Hao Ding; Meixia Xie; Heqiang Zhang; Xiaoyan Hong; Luyi Sun; Fuchuan Ding. 2021. "Multifunctional superamphiphobic fluorinated silica with a core-shell structure for anti-fouling and anti-corrosion applications." Colloids and Surfaces A: Physicochemical and Engineering Aspects 615, no. : 126155.

Communication
Published: 15 January 2021 in Journal of Leather Science and Engineering
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Rice Husks (RHs) are one of the most abundant sources of biomass in the world due to rice consumption. Lignocellulose and silica are two of the main components of RHs, which allow RHs to be applied in different areas. Lignocellulose can be partially dissolved in 1-butyl-3-methylimidazolium chloride (BMIMCl), which is a simple way of competing with the traditional extraction methods that suffer from high chemical consumption. A lignocellulose freeze gel is obtained via a cyclic liquid nitrogen freeze-thaw (NFT) process. Multi-functional self-assembled lignocellulose aerogel is obtained after CO2 supercritical drying. Based on the aerogel’s special properties, two routes are developed for practical applications. On one hand, the aerogel is coated to exhibit a superhydrophobic property that can be applied as an absorbent for oil spills. On the other hand, a carbon aerogel is synthesized via a pyrolysis process, resulting in a porous amorphous carbon. The residue after partially dissolving lignocellulose in BMIMCl is further calcined to obtain amorphous silica nanoparticles, achieving a comprehensive application of RHs. Graphical abstract

ACS Style

Zichao Wei; Andrew T. Smith; William R. T. Tait; Jingjing Liu; Hao Ding; Hui Wang; Weixing Wang; Luyi Sun. Lignocellulose aerogel and amorphous silica nanoparticles from rice husks. Journal of Leather Science and Engineering 2021, 3, 1 -7.

AMA Style

Zichao Wei, Andrew T. Smith, William R. T. Tait, Jingjing Liu, Hao Ding, Hui Wang, Weixing Wang, Luyi Sun. Lignocellulose aerogel and amorphous silica nanoparticles from rice husks. Journal of Leather Science and Engineering. 2021; 3 (1):1-7.

Chicago/Turabian Style

Zichao Wei; Andrew T. Smith; William R. T. Tait; Jingjing Liu; Hao Ding; Hui Wang; Weixing Wang; Luyi Sun. 2021. "Lignocellulose aerogel and amorphous silica nanoparticles from rice husks." Journal of Leather Science and Engineering 3, no. 1: 1-7.

Research article
Published: 12 January 2021 in ACS Applied Energy Materials
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Lithium (Li) as one of the most promising anode materials for the next-generation batteries was unfortunately plagued by the inevitable Li dendrite growth and the dynamically destroy/reconstruction of the unstable native solid electrolyte interphase (SEI) layer, which can severely affect the specific capacity and lifespan of lithium batteries, limiting the practical application of the Li anode. In this work, we designed a single ion conducting artificial polymer SEI layer on the surface of the Li anode. The fabricated SEI layer shows high ionic conductivity and lithium transference number, which is beneficial for inducing homogeneous Li deposition, effectively suppressing the nucleation and growth of dendrite. Moreover, the uniform and stable SEI layer with a well-designed network structure can availably protect the Li anode from directly contacting with the electrolyte, reducing the related side reactions and effectually limit the additional consumption of the active Li and electrolyte. The symmetric Li cells can cycle stably over 1200 h without short-circuit at the current/capacity densities of 1 (1 mAh/cm2) and 5 mA/cm2 (5 mAh/cm2). The assembled LiFePO4/LPEDV-Li cells exhibit high capacity retention up to 81.3% after 2400 cycles at the high rate of 8 C. Therefore, the designed artificial SEI layer with excellent properties presents a high application potential in stabilizing the Li anode.

ACS Style

Jianwei Zhang; Yunyun Zhong; Shuanjin Wang; Dongmei Han; Min Xiao; Luyi Sun; Yuezhong Meng. Artificial Single-Ion Conducting Polymer Solid Electrolyte Interphase Layer toward Highly Stable Lithium Anode. ACS Applied Energy Materials 2021, 4, 862 -869.

AMA Style

Jianwei Zhang, Yunyun Zhong, Shuanjin Wang, Dongmei Han, Min Xiao, Luyi Sun, Yuezhong Meng. Artificial Single-Ion Conducting Polymer Solid Electrolyte Interphase Layer toward Highly Stable Lithium Anode. ACS Applied Energy Materials. 2021; 4 (1):862-869.

Chicago/Turabian Style

Jianwei Zhang; Yunyun Zhong; Shuanjin Wang; Dongmei Han; Min Xiao; Luyi Sun; Yuezhong Meng. 2021. "Artificial Single-Ion Conducting Polymer Solid Electrolyte Interphase Layer toward Highly Stable Lithium Anode." ACS Applied Energy Materials 4, no. 1: 862-869.

Full paper
Published: 18 December 2020 in Advanced Functional Materials
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The design of a dynamic, versatile, convertible, and responsive micropatterned system is realized by a photo/moisture reconstructible multiscale film‐substrate bilayer structure. Specifically, a hydrophilic polyvinyl alcohol (PVA)/laponite (LP) thin film is covalently bonded to a photothermally active polydimethylsiloxane (PDMS)/carbon black (CB) soft substrate. A laser engraver can inscribe programmable aligned micro‐wrinkles by manipulating laser power and spatiotemporal control. These wrinkles can be modulated into three distinct systems 1) moisture erasable and laser re‐writable wrinkles; 2) moisture driven reversible wrinkles; 3) moisture resistant wrinkles, which are achieved by controlling a) the moisture resistance of PVA; b) the dimensional stability of PVA/LP film regulated by the LP nanostructure, which can be adjusted by the laser power and the LP ratio. This programmable system can be applied in information encryption/recording and as a moisture responsive electrical switch, offering new routes for the modulations and applications of next generation smart materials.

ACS Style

Songshan Zeng; Yin Liu; Shuliang Li; Kuangyu Shen; Zaili Hou; Aimee P. Chooi; Andrew T. Smith; Zi Chen; Luyi Sun. Smart Laser‐Writable Micropatterns with Multiscale Photo/Moisture Reconstructible Structure. Advanced Functional Materials 2020, 31, 1 .

AMA Style

Songshan Zeng, Yin Liu, Shuliang Li, Kuangyu Shen, Zaili Hou, Aimee P. Chooi, Andrew T. Smith, Zi Chen, Luyi Sun. Smart Laser‐Writable Micropatterns with Multiscale Photo/Moisture Reconstructible Structure. Advanced Functional Materials. 2020; 31 (10):1.

Chicago/Turabian Style

Songshan Zeng; Yin Liu; Shuliang Li; Kuangyu Shen; Zaili Hou; Aimee P. Chooi; Andrew T. Smith; Zi Chen; Luyi Sun. 2020. "Smart Laser‐Writable Micropatterns with Multiscale Photo/Moisture Reconstructible Structure." Advanced Functional Materials 31, no. 10: 1.

Communication
Published: 14 December 2020 in Chemical Communications
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On catalysis of AlCl3, kaolinite can be facily exfoliated into nanosheets, which subsequently curl into nanoscrolls.

ACS Style

Shilong Zhang; Qinfu Liu; Yongjie Yang; Hao Zhang; Jingjing Liu; Songshan Zeng; Anna Marie LaChance; Allyson T. Barrett; Luyi Sun. An efficient method to prepare aluminosilicate nanoscrolls under mild conditions. Chemical Communications 2020, 57, 789 -792.

AMA Style

Shilong Zhang, Qinfu Liu, Yongjie Yang, Hao Zhang, Jingjing Liu, Songshan Zeng, Anna Marie LaChance, Allyson T. Barrett, Luyi Sun. An efficient method to prepare aluminosilicate nanoscrolls under mild conditions. Chemical Communications. 2020; 57 (6):789-792.

Chicago/Turabian Style

Shilong Zhang; Qinfu Liu; Yongjie Yang; Hao Zhang; Jingjing Liu; Songshan Zeng; Anna Marie LaChance; Allyson T. Barrett; Luyi Sun. 2020. "An efficient method to prepare aluminosilicate nanoscrolls under mild conditions." Chemical Communications 57, no. 6: 789-792.

Research article
Published: 02 December 2020 in ACS Applied Materials & Interfaces
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Boroxine-based thermosets with remarkable mechanical tunability, self-healing ability, recyclability, and adhesive strength are of significant importance in various applications. However, complex multistep reactions are often required to prepare such thermosets. Herein, a facile one-pot approach to synthesize boroxine-based malleable thermosets is proposed. Random copolymers with pendant boronic acid groups were synthesized from alkenyl monomers containing boronic acids [4-vinylphenylboronic acid (4-VPBA), 3-vinylphenylboronic acid, or 3-acrylamidophenylboronic acid] and octadecanoxy polyethylene glycol methacrylate. Then, the as-prepared copolymers were cured to form thermosets with boroxine bonds. The tensile strengths of the thermosets were tailored to range from 9.3 to 27.5 MPa by increasing the concentration of 4-VPBA. Moreover, because of the reversible nature of dynamic boroxine bonds (transformation between boroxines and boronic acids) induced by water, the thermosets exhibit remarkable self-healing efficiency (up to 99%), tunable mechanical properties, and excellent recyclability. Additionally, the thermosets also demonstrate superior adhesive strength (as high as 73.9 MPa) on different substrates.

ACS Style

Xi Yang; Meiling Guo; Yuanpeng Wu; Shishan Xue; Zhenyu Li; Hongwei Zhou; Andrew T. Smith; Luyi Sun. Biomimetic Boroxine-Based Multifunctional Thermosets via One-Pot Synthesis. ACS Applied Materials & Interfaces 2020, 12, 56445 -56453.

AMA Style

Xi Yang, Meiling Guo, Yuanpeng Wu, Shishan Xue, Zhenyu Li, Hongwei Zhou, Andrew T. Smith, Luyi Sun. Biomimetic Boroxine-Based Multifunctional Thermosets via One-Pot Synthesis. ACS Applied Materials & Interfaces. 2020; 12 (50):56445-56453.

Chicago/Turabian Style

Xi Yang; Meiling Guo; Yuanpeng Wu; Shishan Xue; Zhenyu Li; Hongwei Zhou; Andrew T. Smith; Luyi Sun. 2020. "Biomimetic Boroxine-Based Multifunctional Thermosets via One-Pot Synthesis." ACS Applied Materials & Interfaces 12, no. 50: 56445-56453.