Dong Wang

Prof. Dr. Dong Wang

orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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14 December 2016 in Crystals
Verified
Journal Article
Open access
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XLXiu Liu
Xiu Liu
ZYZhou Yang
Zhou Yang
DWDong Wang
Dong Wang
HCHui Cao
Hui Cao
In recent years, there has been extensive research and continuous development on second-order nonlinear optical (NLO) crystal materials due to their potential applications in telecommunications, THz imaging and spectroscopy, optical information processing, and optical data storage. Recent progress in second-order NLO ionic organic crystal materials is reviewed in this article. Research has shown that the second-order nonlinear optical properties of organic crystal materials are closely related to their molecular structures. The basic structures of ionic organic conjugated molecules with excellent nonlinear optical properties are summarized. The effects of molecular structure, for example, conjugated π electron systems, electronic properties of donor-acceptor groups, and different counter-anion effects on second order NLO properties and crystal packing are studied.

25 June 2021 in Liquid Crystals
Verified
Journal Article
Closed access
LJLi Jinqian
Li Jinqian
YZYuzhen Zhao
Yuzhen Zhao
HGHong Gao
Hong Gao
DWDong Wang
Dong Wang
ZMZongcheng Miao
Zongcheng Miao
WHWanli He
Wanli He
In this paper, rare earth oxide CeO2 nanoparticle-doped polymer dispersed liquid crystal (PDLC) films were prepared by the polymerisation induced phase separation (PIPS) process. The effects of the crosslinking agent TMPTA content, liquid crystal (LC) content and the CeO2 content on the polymer structures and electro-optical properties of the as-made PDLC films were investigated systematically. It has been found that by changing the TMPTA content, LC content and doping a small amount of CeO2 nanoparticles, the electro-optical properties of PDLC films can be optimised. After adding a low concentration of CeO2 nanoparticles, the electro-optical properties of the PDLC film have been well optimised: after adding 0.8% CeO2, Vth decreased from 26.6 V to 16.8 V, and CR increased from 89.5 to 137.6. Consequently, this work offers a meaningful approach to optimise the electro-optical properties of PDLC films, which indeed can form a wonderful footstone for the wide application of PDLC.

1 November 2016 in Dyes and Pigments
Verified
Journal Article
Closed access
XLXiong Liu
Xiong Liu
DWDong Wang
Dong Wang
HGHong Gao
Hong Gao
ZYZhou Yang
Zhou Yang
YXYan Xing
Yan Xing
HHHuiying Hu
Huiying Hu

20 July 2021 in Liquid Crystals
Verified
Journal Article
Closed access
ZHZemin He
Zemin He
WSWenbo Shen
Wenbo Shen
PYPing Yu
Ping Yu
YZYuzhen Zhao
Yuzhen Zhao
ZZZhuang Zeng
Zhuang Zeng
DWDong Wang
Dong Wang
In this paper, the viewing-angle-switching (VAS) films based on polymer dispersed liquid crystals (PDLCs) were fabricated and the optical properties of the VAS films were studied. The VAS films based on PDLC films can exhibit electrically switchable viewing-angle properties, and the films showed a narrow viewing angle under no electric field and presented a wide viewing angle under electric field (24 V). Furthermore, the smart anti-peeping liquid crystal display (LCD) containing the VAS film based on PDLC film also displayed the electrically switchable viewing-angle performance and the corresponding mechanism was discussed. The results demonstrated both the anti-peeping effect and electrically switchable view-angle effect of the as-fabricated VAS film, promising potential applications in intelligent optical films and novel information displays. GRAPHICAL ABSTRACT

16 February 2016 in Physical Chemistry Chemical Physics
Verified
Journal Article
Closed access
PDF file
XLXiong Liu
Xiong Liu
DWDong Wang
Dong Wang
HGHong Gao
Hong Gao
ZYZhou Yang
Zhou Yang
YXYan Xing
Yan Xing
HHHuiying Hu
Huiying Hu
A novel kind of monodonor–bisacceptor (D–A–A) C60 charge-transfer complex was synthesized by the high-yielding [2+2] click chemistry reaction and the Prato reaction. Both electrochemical and UV-vis spectra studies were carried out and they proved that the side groups of the fullerene derivatives played an important role in the energy gaps, and also affected the third-order non-linear optical response. The experimental investigation on the third-order non-linear optical phenomena of the fullerene derivatives was measured using the Z-scan technique at different wavelengths (532 nm and 1064 nm). All the compounds exhibited very special non-linear optical properties when pumped by 21 ps pulses at 532 nm which suggested that there were two different types of reversible photo-isomerization. The optical-limiting performance has also been studied which proved indirectly the mechanism models of the reversible photo-isomerization.

8 January 2016 in Liquid Crystals
Verified
Journal Article
Closed access
WZWeikai Zhang
Weikai Zhang
XWXiaomei Wang
Xiaomei Wang
DWDong Wang
Dong Wang
ZYZhou Yang
Zhou Yang
HGHong Gao
Hong Gao
HYHuai Yang
Huai Yang
Liquid-crystalline blue phases (BPs) are stable only for very narrow temperature range between the isotropic and the chiral nematic phase that severely hinders their applicability. Herein, the aminoazobenzol group was chemically grafted onto epoxy group of graphene oxide (GO) via addition reaction. Successful grafting of aminoazobenzol group was confirmed using X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), UV–vis absorption spectra and thermogravimetric analysis (TGA). The resultant aminoazobenzol group–modified GO sheets, which is reduced (RGO-Az), were easily redispersable in common organic solvents or liquid crystals (LCs). By doping different contents of RGO-Az, nanosheets could stabilise BP and increase the BP range. When doped with 0.5 wt% RGO-Az, the mixtures show the wider range with 5.9°C than the range with 3.6°C of BPLCs without RGO-Az. Meanwhile, the phase sequence and the range of the aforementioned phases are reproducible upon heating and cooling, which shows that the BPs doped with RGO-Az nanosheets are thermodynamically stable.