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Cellulose nanocrystals (CNCs) represent intriguing biopolymeric nanocrystalline materials, that are biocompatible, sustainable and renewable, can be chemically functionalized and are endowed with exceptional mechanical properties. Recently, studies have been performed to prepare CNCs with extraordinary photophysical properties, also by means of their functionalization with organic light-emitting fluorophores. In this paper, we used the reductive amination reaction to chemically bind 4-(1-pyrenyl)butanamine selectively to the reducing termini of sulfated or neutral CNCs (S_CNC and N_CNC) obtained from sulfuric acid or hydrochloric acid hydrolysis. The functionalization reaction is simple and straightforward, and it induces the appearance of the typical pyrene emission profile in the functionalized materials. After a characterization of the new materials performed by ATR-FTIR and fluorescence spectroscopies, we demonstrate luminescence quenching of the decorated N_CNC by copper (II) sulfate, hypothesizing for these new functionalized materials an application in water purification technologies.
Omar Hassan Omar; Rosa Giannelli; Erica Colaprico; Laura Capodieci; Francesco Babudri; Alessandra Operamolla. Reductive Amination Reaction for the Functionalization of Cellulose Nanocrystals. Molecules 2021, 26, 5032 .
AMA StyleOmar Hassan Omar, Rosa Giannelli, Erica Colaprico, Laura Capodieci, Francesco Babudri, Alessandra Operamolla. Reductive Amination Reaction for the Functionalization of Cellulose Nanocrystals. Molecules. 2021; 26 (16):5032.
Chicago/Turabian StyleOmar Hassan Omar; Rosa Giannelli; Erica Colaprico; Laura Capodieci; Francesco Babudri; Alessandra Operamolla. 2021. "Reductive Amination Reaction for the Functionalization of Cellulose Nanocrystals." Molecules 26, no. 16: 5032.
Three l-phenylalanine- or d-glucose-decorated phenylene–thiophene oligomers have been studied using UV-Vis and ECD spectroscopies in different conditions of solution aggregation and thin films, investigating the impact of chirality on their aggregation modes.
Omar Hassan Omar; Marta Falcone; Alessandra Operamolla; Gianluigi Albano. Impact of chirality on the aggregation modes of l-phenylalanine- and d-glucose-decorated phenylene–thiophene oligomers. New Journal of Chemistry 2021, 1 .
AMA StyleOmar Hassan Omar, Marta Falcone, Alessandra Operamolla, Gianluigi Albano. Impact of chirality on the aggregation modes of l-phenylalanine- and d-glucose-decorated phenylene–thiophene oligomers. New Journal of Chemistry. 2021; ():1.
Chicago/Turabian StyleOmar Hassan Omar; Marta Falcone; Alessandra Operamolla; Gianluigi Albano. 2021. "Impact of chirality on the aggregation modes of l-phenylalanine- and d-glucose-decorated phenylene–thiophene oligomers." New Journal of Chemistry , no. : 1.
The peripherical thioacetylation of a bithiophene-DPP molecule can greatly influence the supramolecular aggregation triggering the formation of NIR emitting J-aggregates both in films and nanoparticles with high colloidal stability.
Angela Punzi; Davide Blasi; Alessandra Operamolla; Roberto Comparelli; Gerardo Palazzo; Gianluca M. Farinola. Peripherical thioester functionalization induces J-aggregation in bithiophene-DPP films and nanoparticles. RSC Advances 2021, 11, 11536 -11540.
AMA StyleAngela Punzi, Davide Blasi, Alessandra Operamolla, Roberto Comparelli, Gerardo Palazzo, Gianluca M. Farinola. Peripherical thioester functionalization induces J-aggregation in bithiophene-DPP films and nanoparticles. RSC Advances. 2021; 11 (19):11536-11540.
Chicago/Turabian StyleAngela Punzi; Davide Blasi; Alessandra Operamolla; Roberto Comparelli; Gerardo Palazzo; Gianluca M. Farinola. 2021. "Peripherical thioester functionalization induces J-aggregation in bithiophene-DPP films and nanoparticles." RSC Advances 11, no. 19: 11536-11540.
Cellulose nanomaterials have been widely investigated in the last decade, unveiling attractive properties for emerging applications. The ability of sulfated cellulose nanocrystals (CNCs) to guide the supramolecular organization of amphiphilic fullerene derivatives at the air/water interface has been recently highlighted. Here, we further investigated the assembly of Langmuir hybrid films that are based on the electrostatic interaction between cationic fulleropyrrolidines deposited at the air/water interface and anionic CNCs dispersed in the subphase, assessing the influence of additional negatively charged species that are dissolved in the water phase. By means of isotherm acquisition and spectroscopic measurements, we demonstrated that a tetra-sulfonated porphyrin, which was introduced in the subphase as anionic competitor, strongly inhibited the binding of CNCs to the floating fullerene layer. Nevertheless, despite the strong inhibition by anionic molecules, the mutual interaction between fulleropyrrolidines at the interface and the CNCs led to the assembly of robust hybrid films, which could be efficiently transferred onto solid substrates. Interestingly, ITO-electrodes that were modified with five-layer hybrid films exhibited enhanced electrical capacitance and produced anodic photocurrents at 0.4 V vs Ag/AgCl, whose intensity (230 nA/cm2) proved to be four times higher than the one that was observed with the sole fullerene derivative (60 nA/cm2).
Francesco Milano; Maria Rachele Guascito; Paola Semeraro; Shadi Sawalha; Tatiana Da Ros; Alessandra Operamolla; Livia Giotta; Maurizio Prato; Ludovico Valli. Nanocellulose/Fullerene Hybrid Films Assembled at the Air/Water Interface as Promising Functional Materials for Photo-Electrocatalysis. Polymers 2021, 13, 243 .
AMA StyleFrancesco Milano, Maria Rachele Guascito, Paola Semeraro, Shadi Sawalha, Tatiana Da Ros, Alessandra Operamolla, Livia Giotta, Maurizio Prato, Ludovico Valli. Nanocellulose/Fullerene Hybrid Films Assembled at the Air/Water Interface as Promising Functional Materials for Photo-Electrocatalysis. Polymers. 2021; 13 (2):243.
Chicago/Turabian StyleFrancesco Milano; Maria Rachele Guascito; Paola Semeraro; Shadi Sawalha; Tatiana Da Ros; Alessandra Operamolla; Livia Giotta; Maurizio Prato; Ludovico Valli. 2021. "Nanocellulose/Fullerene Hybrid Films Assembled at the Air/Water Interface as Promising Functional Materials for Photo-Electrocatalysis." Polymers 13, no. 2: 243.
Cellulose nanocrystals (CNCs) are renewable, sustainable and biocompatible nanomaterials, which have gained great attention in last years for their potentialities in several fields of application. With their polyelectrolyte behaviour, sulphated CNCs are suitable to produce multilayered architectures with cationic molecules. In this work, we have investigated the ability of anionic CNCs to assist the two-dimensional organization of two cationic fulleropyrrolidines at the air/water interface, leading to hybrid Langmuir-Schäfer films with improved (photo)electrical properties. We demonstrated that CNCs interact with the fulleropyrrolidines at the air/water interface, favouring the assembly of organized hybrid C60/CNC films. The transfer efficiency of Langmuir layers and the morphological regularity of supported films proved to be influenced by the extent of positive charge on the fullerene counterpart. Interestingly, the electrochemical characterization of hybrid films revealed that sulphated nanocellulose strongly improves the electrical properties of organized fullerene layers, by increasing their conductivity and favouring the hydrogen evolution reaction. Moreover, the well-established C60 photoactivity proved to be enhanced by CNCs, as demonstrated by the higher intensity of photocurrents. This outstanding nanocellulose impact on fullerene film electrical properties paves the way to the development of more performing C60-based electrochemical devices, able to better exploit the unique properties of carbon nanostructures.
Shadi Sawalha; Francesco Milano; Maria R. Guascito; Simona Bettini; Livia Giotta; Alessandra Operamolla; Tatiana Da Ros; Maurizio Prato; Ludovico Valli. Improving 2D-organization of fullerene Langmuir-Schäfer thin films by interaction with cellulose nanocrystals. Carbon 2020, 167, 906 -917.
AMA StyleShadi Sawalha, Francesco Milano, Maria R. Guascito, Simona Bettini, Livia Giotta, Alessandra Operamolla, Tatiana Da Ros, Maurizio Prato, Ludovico Valli. Improving 2D-organization of fullerene Langmuir-Schäfer thin films by interaction with cellulose nanocrystals. Carbon. 2020; 167 ():906-917.
Chicago/Turabian StyleShadi Sawalha; Francesco Milano; Maria R. Guascito; Simona Bettini; Livia Giotta; Alessandra Operamolla; Tatiana Da Ros; Maurizio Prato; Ludovico Valli. 2020. "Improving 2D-organization of fullerene Langmuir-Schäfer thin films by interaction with cellulose nanocrystals." Carbon 167, no. : 906-917.
Mihai Irimia-Vladu; Yasin Kanbur; Fausta Camaioni; Maria Elisabetta Coppola; Cigdem Yumusak; Cristian Vlad Irimia; Angela Vlad; Alessandra Operamolla; Gianluca M. Farinola; Gian Paolo Suranna; Natalia González-Benitez; Maria Carmen Molina; Luis Fernando Bautista; Heinz Langhals; Barbara Stadlober; Eric Daniel Głowacki; Niyazi Serdar Sariciftci. Stability of Selected Hydrogen Bonded Semiconductors in Organic Electronic Devices. Chemistry of Materials 2019, 31, 6315 -6346.
AMA StyleMihai Irimia-Vladu, Yasin Kanbur, Fausta Camaioni, Maria Elisabetta Coppola, Cigdem Yumusak, Cristian Vlad Irimia, Angela Vlad, Alessandra Operamolla, Gianluca M. Farinola, Gian Paolo Suranna, Natalia González-Benitez, Maria Carmen Molina, Luis Fernando Bautista, Heinz Langhals, Barbara Stadlober, Eric Daniel Głowacki, Niyazi Serdar Sariciftci. Stability of Selected Hydrogen Bonded Semiconductors in Organic Electronic Devices. Chemistry of Materials. 2019; 31 (17):6315-6346.
Chicago/Turabian StyleMihai Irimia-Vladu; Yasin Kanbur; Fausta Camaioni; Maria Elisabetta Coppola; Cigdem Yumusak; Cristian Vlad Irimia; Angela Vlad; Alessandra Operamolla; Gianluca M. Farinola; Gian Paolo Suranna; Natalia González-Benitez; Maria Carmen Molina; Luis Fernando Bautista; Heinz Langhals; Barbara Stadlober; Eric Daniel Głowacki; Niyazi Serdar Sariciftci. 2019. "Stability of Selected Hydrogen Bonded Semiconductors in Organic Electronic Devices." Chemistry of Materials 31, no. 17: 6315-6346.
The self-assembly properties of a series of square planar Pt(ii) complexes have been related to their charge transport properties, finding higher mobility values in the complexes placing the Pt centers in closer proximity.
Amparo Ruiz Carretero; Youssef Atoini; Tianyan Han; Alessandra Operamolla; Stefano Ippolito; Cataldo Valentini; Serena Carrara; Stephan Sinn; Eko Adi Prasetyanto; Thomas Heiser; Paolo Samorì; Gianluca Farinola; Luisa De Cola. Charge transport enhancement in supramolecular oligothiophene assemblies using Pt(ii) centers as a guide. Journal of Materials Chemistry A 2019, 7, 16777 -16784.
AMA StyleAmparo Ruiz Carretero, Youssef Atoini, Tianyan Han, Alessandra Operamolla, Stefano Ippolito, Cataldo Valentini, Serena Carrara, Stephan Sinn, Eko Adi Prasetyanto, Thomas Heiser, Paolo Samorì, Gianluca Farinola, Luisa De Cola. Charge transport enhancement in supramolecular oligothiophene assemblies using Pt(ii) centers as a guide. Journal of Materials Chemistry A. 2019; 7 (28):16777-16784.
Chicago/Turabian StyleAmparo Ruiz Carretero; Youssef Atoini; Tianyan Han; Alessandra Operamolla; Stefano Ippolito; Cataldo Valentini; Serena Carrara; Stephan Sinn; Eko Adi Prasetyanto; Thomas Heiser; Paolo Samorì; Gianluca Farinola; Luisa De Cola. 2019. "Charge transport enhancement in supramolecular oligothiophene assemblies using Pt(ii) centers as a guide." Journal of Materials Chemistry A 7, no. 28: 16777-16784.
Cellulose nanopaper (CNP) has attracted much interest during the last decade as a new fascinating renewable and biodegradable substrate for printed electronics and solar cells. Its outstanding optical and mechanical properties make CNP the ideal substrate for the preparation of photovoltaic devices, since its high transparency and haze favour the absorption of light from the active layer of the solar cell. However, some advances need to be done in the direction of increasing CNP stability in humid environment without compromising its remarkable advantages. This review critically points at these aspects, presenting an overview of state-of-art solutions to enhance nanopaper stability in a humid environment.
Alessandra Operamolla. Recent Advances on Renewable and Biodegradable Cellulose Nanopaper Substrates for Transparent Light-Harvesting Devices: Interaction with Humid Environment. International Journal of Photoenergy 2019, 2019, 1 -16.
AMA StyleAlessandra Operamolla. Recent Advances on Renewable and Biodegradable Cellulose Nanopaper Substrates for Transparent Light-Harvesting Devices: Interaction with Humid Environment. International Journal of Photoenergy. 2019; 2019 ():1-16.
Chicago/Turabian StyleAlessandra Operamolla. 2019. "Recent Advances on Renewable and Biodegradable Cellulose Nanopaper Substrates for Transparent Light-Harvesting Devices: Interaction with Humid Environment." International Journal of Photoenergy 2019, no. : 1-16.
Paper is a flexible material, commonly used for information storage, writing, packaging, or specialized purposes. It also has strong appeal as a substrate in the field of flexible printed electronics. Many applications, including safety, merchandising, smart labels/packing, and chemical/biomedical sensors, require an energy source to power operation. Here, progress regarding development of photovoltaic and energy storage devices on cellulosic substrates, where one or more of the main material layers are deposited via solution processing or printing, is reviewed. Paper can be used simply as the flexible substrate or, exploiting its porous fiber‐like nature, as an active film by infiltration or copreparation with electronic materials. Solar cells with efficiencies of up to 9% on opaque substrates and 13% on transparent substrates are demonstrated. Recent developments in paper‐based supercapacitors and batteries are also reviewed with maximum achieved capacity of 1350 mF cm−2 and 2000 mAh g−1, respectively. Analyzing the literature, it becomes apparent that more work needs to be carried out in continuing to improve peak performance, but especially stability and the application of printing techniques, even roll‐to‐roll processing, over large areas. Paper is not only environmentally friendly and recyclable, but also thin, flexible, lightweight, biocompatible, and inexpensive.
Francesca Brunetti; Alessandra Operamolla; Sergio Castro‐Hermosa; Giulia Lucarelli; Valerio Manca; Gianluca M. Farinola; Thomas M. Brown. Printed Solar Cells and Energy Storage Devices on Paper Substrates. Advanced Functional Materials 2019, 29, 1 .
AMA StyleFrancesca Brunetti, Alessandra Operamolla, Sergio Castro‐Hermosa, Giulia Lucarelli, Valerio Manca, Gianluca M. Farinola, Thomas M. Brown. Printed Solar Cells and Energy Storage Devices on Paper Substrates. Advanced Functional Materials. 2019; 29 (21):1.
Chicago/Turabian StyleFrancesca Brunetti; Alessandra Operamolla; Sergio Castro‐Hermosa; Giulia Lucarelli; Valerio Manca; Gianluca M. Farinola; Thomas M. Brown. 2019. "Printed Solar Cells and Energy Storage Devices on Paper Substrates." Advanced Functional Materials 29, no. 21: 1.
Cellulose nanopaper (CNP) is dipped in lauroyl chloride solution. The hydrophobic nanopaper produced (C12-CNP) is characterized considering the morphology, composition, crystallinity and water uptake dynamics.
Alessandra Operamolla; Stefano Casalini; Dario Console; Laura Capodieci; Francesca Di Benedetto; Giuseppe Valerio Bianco; Francesco Babudri. Tailoring water stability of cellulose nanopaper by surface functionalization. Soft Matter 2018, 14, 7390 -7400.
AMA StyleAlessandra Operamolla, Stefano Casalini, Dario Console, Laura Capodieci, Francesca Di Benedetto, Giuseppe Valerio Bianco, Francesco Babudri. Tailoring water stability of cellulose nanopaper by surface functionalization. Soft Matter. 2018; 14 (36):7390-7400.
Chicago/Turabian StyleAlessandra Operamolla; Stefano Casalini; Dario Console; Laura Capodieci; Francesca Di Benedetto; Giuseppe Valerio Bianco; Francesco Babudri. 2018. "Tailoring water stability of cellulose nanopaper by surface functionalization." Soft Matter 14, no. 36: 7390-7400.
Ternary blends comprising an ‘energy-cascade former’ in addition to the donor and the acceptor materials increasingly attract attention in the organic solar cell area as they seem to provide a tool to positively manipulate the open-circuit voltage of bulk-heterojunction devices. By comparing two additives that have similar HOMO/LUMO levels and that can be expected to lead to an energy cascade in ternaries with the prototypical P3HT:PC60BM system, we demonstrate here that the compatibility of the additive with, in this specific case, the fullerene, that can be tailored by peripheral chemical functionalization, plays a critical role in energy cascade formation. A compromise needs to be found between good mixing (favoring energy cascade formation) and phase separation (supporting charge extraction) that affect the open-circuit voltage in an as important fashion as their electronic features, providing critical insights for future materials design activities.
Angela Punzi; Alessandra Operamolla; Omar Hassan Omar; Francesca Brunetti; Alberto Davide Scaccabarozzi; Gianluca M. Farinola; Natalie Stingelin. Designing Small Molecules as Ternary Energy-Cascade Additives for Polymer:Fullerene Solar Cell Blends. Chemistry of Materials 2018, 30, 2213 -2217.
AMA StyleAngela Punzi, Alessandra Operamolla, Omar Hassan Omar, Francesca Brunetti, Alberto Davide Scaccabarozzi, Gianluca M. Farinola, Natalie Stingelin. Designing Small Molecules as Ternary Energy-Cascade Additives for Polymer:Fullerene Solar Cell Blends. Chemistry of Materials. 2018; 30 (7):2213-2217.
Chicago/Turabian StyleAngela Punzi; Alessandra Operamolla; Omar Hassan Omar; Francesca Brunetti; Alberto Davide Scaccabarozzi; Gianluca M. Farinola; Natalie Stingelin. 2018. "Designing Small Molecules as Ternary Energy-Cascade Additives for Polymer:Fullerene Solar Cell Blends." Chemistry of Materials 30, no. 7: 2213-2217.
Direct arylation of 5-octylthieno[3,4-c]pyrrole-4,6-dione with a series of functionalized aryl iodides via C–H bond activation is demonstrated in a deep eutectic solvent made of choline chloride and urea in non-anhydrous conditions and without exclusion of air. This is the first demonstration of a thiophene–aryl coupling via direct arylation in deep eutectic solvents.
Angela Punzi; Donato I. Coppi; Sergio Matera; Maria A. M. Capozzi; Alessandra Operamolla; Roberta Ragni; Francesco Babudri; Gianluca M. Farinola. Pd-Catalyzed Thiophene–Aryl Coupling Reaction via C–H Bond Activation in Deep Eutectic Solvents. Organic Letters 2017, 19, 4754 -4757.
AMA StyleAngela Punzi, Donato I. Coppi, Sergio Matera, Maria A. M. Capozzi, Alessandra Operamolla, Roberta Ragni, Francesco Babudri, Gianluca M. Farinola. Pd-Catalyzed Thiophene–Aryl Coupling Reaction via C–H Bond Activation in Deep Eutectic Solvents. Organic Letters. 2017; 19 (18):4754-4757.
Chicago/Turabian StyleAngela Punzi; Donato I. Coppi; Sergio Matera; Maria A. M. Capozzi; Alessandra Operamolla; Roberta Ragni; Francesco Babudri; Gianluca M. Farinola. 2017. "Pd-Catalyzed Thiophene–Aryl Coupling Reaction via C–H Bond Activation in Deep Eutectic Solvents." Organic Letters 19, no. 18: 4754-4757.
Alessandra Operamolla; Angela Punzi; Gianluca Maria Farinola. Synthetic Routes to Thiol-Functionalized Organic Semiconductors for Molecular and Organic Electronics. Asian Journal of Organic Chemistry 2016, 6, 120 -138.
AMA StyleAlessandra Operamolla, Angela Punzi, Gianluca Maria Farinola. Synthetic Routes to Thiol-Functionalized Organic Semiconductors for Molecular and Organic Electronics. Asian Journal of Organic Chemistry. 2016; 6 (2):120-138.
Chicago/Turabian StyleAlessandra Operamolla; Angela Punzi; Gianluca Maria Farinola. 2016. "Synthetic Routes to Thiol-Functionalized Organic Semiconductors for Molecular and Organic Electronics." Asian Journal of Organic Chemistry 6, no. 2: 120-138.
Gianluca M. Farinola; Roberta Ragni; Francesco Milano; Simona La Gatta; Roberto R. Tangorra; Maurizio Mastropasqua Talamo; Marco Lo Presti; Angela Agostiano; Stefania R. Cicco; Alessandra Operamolla; Omar Hassan Omar; Massimo Trotta. Photoconverters with organic semiconductors and photosynthetic bacteria: positioning the bacterial Reaction Center in nanostructures. Organic Sensors and Bioelectronics IX 2016, 994406 -994406-10.
AMA StyleGianluca M. Farinola, Roberta Ragni, Francesco Milano, Simona La Gatta, Roberto R. Tangorra, Maurizio Mastropasqua Talamo, Marco Lo Presti, Angela Agostiano, Stefania R. Cicco, Alessandra Operamolla, Omar Hassan Omar, Massimo Trotta. Photoconverters with organic semiconductors and photosynthetic bacteria: positioning the bacterial Reaction Center in nanostructures. Organic Sensors and Bioelectronics IX. 2016; ():994406-994406-10.
Chicago/Turabian StyleGianluca M. Farinola; Roberta Ragni; Francesco Milano; Simona La Gatta; Roberto R. Tangorra; Maurizio Mastropasqua Talamo; Marco Lo Presti; Angela Agostiano; Stefania R. Cicco; Alessandra Operamolla; Omar Hassan Omar; Massimo Trotta. 2016. "Photoconverters with organic semiconductors and photosynthetic bacteria: positioning the bacterial Reaction Center in nanostructures." Organic Sensors and Bioelectronics IX , no. : 994406-994406-10.
The photosynthetic Reaction Center (RC) from the Rhodobacter sphaeroides bacterium has been covalently bioconjugated with a NIR-emitting fluorophore (AE800) whose synthesis was specifically tailored to act as artificial antenna harvesting light in the entire visi-ble region. AE800 has a broad absorption spectrum with peaks cen-tred in the absorption gaps of the RC and its emission overlaps the most intense RC absorption bands, ensuring a consistent increase of the protein optical cross-section. The covalent hybrid AE800-RC is stable and fully functional. The energy collected by the artificial antenna is transferred to the protein via FRET mechanism, and the hybrid system outperforms by a noteworthy 30% the overall photo-chemical activity of the native protein under the entire range of visi-ble light. This improvement in the optical characteristic of the pho-toenzyme demonstrates the effectiveness of the bioconjugation approach as a suitable route to new biohybrid materials for energy conversion, photocatalysis and biosensing
Omar Hassan Omar; Simona La Gatta; Rocco Roberto Tangorra; Francesco Milano; Roberta Ragni; Alessandra Operamolla; Roberto Argazzi; Claudio Chiorboli; Angela Agostiano; Massimo Trotta; Gianluca M. Farinola. Synthetic Antenna Functioning As Light Harvester in the Whole Visible Region for Enhanced Hybrid Photosynthetic Reaction Centers. Bioconjugate Chemistry 2016, 27, 1614 -1623.
AMA StyleOmar Hassan Omar, Simona La Gatta, Rocco Roberto Tangorra, Francesco Milano, Roberta Ragni, Alessandra Operamolla, Roberto Argazzi, Claudio Chiorboli, Angela Agostiano, Massimo Trotta, Gianluca M. Farinola. Synthetic Antenna Functioning As Light Harvester in the Whole Visible Region for Enhanced Hybrid Photosynthetic Reaction Centers. Bioconjugate Chemistry. 2016; 27 (7):1614-1623.
Chicago/Turabian StyleOmar Hassan Omar; Simona La Gatta; Rocco Roberto Tangorra; Francesco Milano; Roberta Ragni; Alessandra Operamolla; Roberto Argazzi; Claudio Chiorboli; Angela Agostiano; Massimo Trotta; Gianluca M. Farinola. 2016. "Synthetic Antenna Functioning As Light Harvester in the Whole Visible Region for Enhanced Hybrid Photosynthetic Reaction Centers." Bioconjugate Chemistry 27, no. 7: 1614-1623.
A model system for the electrochemical investigation of vectorial electron transfer in biological systems was designed, assembled and characterized. Gold electrodes, functionalized with a -OCH3 terminated, aromatic self-assembled monolayer, were used as a substrate for the adsorption of variants of copper- containing, redox metalloprotein azurin. The engineered azurin bears a polyhistidine tag at its C-terminus. Thanks to the presence of the solvent exposed tag, which chelates Cu2+ ions in solution, we introduced an exogenous redox centre. The different reduction potentials of the two redox centres and their positioning with respect to the surface are such that electron transfer from the exogenous copper centre and the electrode is mediated by the native azurin active site, closely paralleling electron transfer processes in naturally occurring multicentre metalloprotein
Stefano Casalini; Marcello Berto; Alessandro Kovtun; Alessandra Operamolla; Giulia Di Rocco; Paolo Facci; Andrea Liscio; Gianluca M. Farinola; Marco Borsari; Carlo A. Bortolotti. Surface Immobilized His-tagged Azurin as a Model Interface for the Investigation of Vectorial Electron Transfer in Biological Systems. Electrochimica Acta 2015, 178, 638 -646.
AMA StyleStefano Casalini, Marcello Berto, Alessandro Kovtun, Alessandra Operamolla, Giulia Di Rocco, Paolo Facci, Andrea Liscio, Gianluca M. Farinola, Marco Borsari, Carlo A. Bortolotti. Surface Immobilized His-tagged Azurin as a Model Interface for the Investigation of Vectorial Electron Transfer in Biological Systems. Electrochimica Acta. 2015; 178 ():638-646.
Chicago/Turabian StyleStefano Casalini; Marcello Berto; Alessandro Kovtun; Alessandra Operamolla; Giulia Di Rocco; Paolo Facci; Andrea Liscio; Gianluca M. Farinola; Marco Borsari; Carlo A. Bortolotti. 2015. "Surface Immobilized His-tagged Azurin as a Model Interface for the Investigation of Vectorial Electron Transfer in Biological Systems." Electrochimica Acta 178, no. : 638-646.
The micelle-to-vesicle transition technique was used to reconstitute the integral membrane protein photosynthetic reaction center (RC) and the position of the RC in the polymersome vesicle was investigated.
R. R. Tangorra; Alessandra Operamolla; F. Milano; O. Hassan Omar; J. Henrard; R. Comparelli; F. Italiano; Angela Agostiano; Vincenzo De Leo; R. Marotta; Andrea Falqui; G. M. Farinola; M. Trotta. Assembly of a photosynthetic reaction center with ABA tri-block polymersomes: highlights on protein localization. Photochemical & Photobiological Sciences 2015, 14, 1844 -1852.
AMA StyleR. R. Tangorra, Alessandra Operamolla, F. Milano, O. Hassan Omar, J. Henrard, R. Comparelli, F. Italiano, Angela Agostiano, Vincenzo De Leo, R. Marotta, Andrea Falqui, G. M. Farinola, M. Trotta. Assembly of a photosynthetic reaction center with ABA tri-block polymersomes: highlights on protein localization. Photochemical & Photobiological Sciences. 2015; 14 (10):1844-1852.
Chicago/Turabian StyleR. R. Tangorra; Alessandra Operamolla; F. Milano; O. Hassan Omar; J. Henrard; R. Comparelli; F. Italiano; Angela Agostiano; Vincenzo De Leo; R. Marotta; Andrea Falqui; G. M. Farinola; M. Trotta. 2015. "Assembly of a photosynthetic reaction center with ABA tri-block polymersomes: highlights on protein localization." Photochemical & Photobiological Sciences 14, no. 10: 1844-1852.
We report on bioconjugation strategies to functionalize hydrogen-bonded pigment semiconductors with proteins, and demonstrate hybrid bioelectronics devices operating under aqueous conditions.
E. D. Głowacki; R. R. Tangorra; Halime Coskun; D. Farka; Alessandra Operamolla; Yasin Kanbur; F. Milano; L. Giotta; Gianluca Maria Farinola; N. S. Sariciftci. Bioconjugation of hydrogen-bonded organic semiconductors with functional proteins. Journal of Materials Chemistry C 2015, 3, 6554 -6564.
AMA StyleE. D. Głowacki, R. R. Tangorra, Halime Coskun, D. Farka, Alessandra Operamolla, Yasin Kanbur, F. Milano, L. Giotta, Gianluca Maria Farinola, N. S. Sariciftci. Bioconjugation of hydrogen-bonded organic semiconductors with functional proteins. Journal of Materials Chemistry C. 2015; 3 (25):6554-6564.
Chicago/Turabian StyleE. D. Głowacki; R. R. Tangorra; Halime Coskun; D. Farka; Alessandra Operamolla; Yasin Kanbur; F. Milano; L. Giotta; Gianluca Maria Farinola; N. S. Sariciftci. 2015. "Bioconjugation of hydrogen-bonded organic semiconductors with functional proteins." Journal of Materials Chemistry C 3, no. 25: 6554-6564.
Chemical manipulations of the photosynthetic bacterial reaction center for the implementation of this photoenzyme into bioelectronic devices are overviewed.
Alessandra Operamolla; Roberta Ragni; Francesco Milano; R. Roberto Tangorra; Alessandra Antonucci; Angela Agostiano; Massimo Trotta; Gianluca Farinola. “Garnishing” the photosynthetic bacterial reaction center for bioelectronics. Journal of Materials Chemistry C 2015, 3, 6471 -6478.
AMA StyleAlessandra Operamolla, Roberta Ragni, Francesco Milano, R. Roberto Tangorra, Alessandra Antonucci, Angela Agostiano, Massimo Trotta, Gianluca Farinola. “Garnishing” the photosynthetic bacterial reaction center for bioelectronics. Journal of Materials Chemistry C. 2015; 3 (25):6471-6478.
Chicago/Turabian StyleAlessandra Operamolla; Roberta Ragni; Francesco Milano; R. Roberto Tangorra; Alessandra Antonucci; Angela Agostiano; Massimo Trotta; Gianluca Farinola. 2015. "“Garnishing” the photosynthetic bacterial reaction center for bioelectronics." Journal of Materials Chemistry C 3, no. 25: 6471-6478.
Four linear terarylene molecules (i) 4-nitro-terphenyl-4″-methanethiol (NTM), (ii) 4-nitro-terphenyl-3″,5″-dimethanethiol (NTD), (iii) ([1,1';4',1″] terphenyl-3,5-diyl)methanethiol (TM), and (iv) ([1,1';4',1″] terphenyl-3,5-diyl)dimethanethiol (TD) have been synthesized and their self-assembled monolayers (SAMs) have been obtained on polycrystalline gold. NTM and NTD SAMs have been characterized by X-ray photoelectron spectroscopy, Kelvin probe measurements, electrochemistry, and contact angle measurements. The terminal nitro group (-NO2) is irreversibly reduced to hydroxylamine (-NHOH), which can be reversibly turned into nitroso group (-NO). The direct comparison between NTM/NTD and TM/TD SAMs unambiguously shows the crucial influence of the nitro group on electrowetting properties of polycrystalline Au. The higher grade of surface tension related to NHOH has been successfully exploited for basic operations of digital μ-fluidics, such as droplets motion and merging.
Stefano Casalini; Marcello Berto; Carlo Augusto Bortolotti; Giulia Foschi; Alessandra Operamolla; Michele Di Lauro; Omar Hassan Omar; Andrea Liscio; Luca Pasquali; Monica Montecchi; Gianluca Maria Farinola; Marco Borsari. Electrowetting of Nitro-Functionalized Oligoarylene Thiols Self-Assembled on Polycrystalline Gold. ACS Applied Materials & Interfaces 2015, 7, 3902 -3909.
AMA StyleStefano Casalini, Marcello Berto, Carlo Augusto Bortolotti, Giulia Foschi, Alessandra Operamolla, Michele Di Lauro, Omar Hassan Omar, Andrea Liscio, Luca Pasquali, Monica Montecchi, Gianluca Maria Farinola, Marco Borsari. Electrowetting of Nitro-Functionalized Oligoarylene Thiols Self-Assembled on Polycrystalline Gold. ACS Applied Materials & Interfaces. 2015; 7 (7):3902-3909.
Chicago/Turabian StyleStefano Casalini; Marcello Berto; Carlo Augusto Bortolotti; Giulia Foschi; Alessandra Operamolla; Michele Di Lauro; Omar Hassan Omar; Andrea Liscio; Luca Pasquali; Monica Montecchi; Gianluca Maria Farinola; Marco Borsari. 2015. "Electrowetting of Nitro-Functionalized Oligoarylene Thiols Self-Assembled on Polycrystalline Gold." ACS Applied Materials & Interfaces 7, no. 7: 3902-3909.