Anisotropic Photomechanical Response of Stretched Blend Film Made of Polycaprolactone-Polyvinyl Ether with Azobenzene Group as Side Chain

2008 ◽  
Vol 209 (20) ◽  
pp. 2071-2077 ◽  
Author(s):  
Shimon Tanaka ◽  
Hyun-Kyoung Kim ◽  
Astushi Sudo ◽  
Haruo Nishida ◽  
Takeshi Endo
Keyword(s):  
Side Chain ◽  
Blend Film ◽  
Azobenzene Group

Significant enhancement of responsivity of organic photodetectors upon molecular engineering

2019 ◽  
Vol 7 (19) ◽  
pp. 5739-5747 ◽  
Author(s):  
Lei Lv ◽  
Jinde Yu ◽  
Xinyu Sui ◽  
Jianfei Wu ◽  
Xiaohan Dong ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Molecular Engineering ◽  
Significant Enhancement ◽  
Side Chain ◽  
Film Morphology ◽  
Blend Film ◽  
Organic Photodetectors

Upon incorporating S⋯O noncovalent conformational locks and side chain engineering, the optical absorption and blend film morphology of molecular acceptors are effectively tuned, resulting in an enhanced photocurrent and thus a higher responsivity (from 70.5 mA W−1 to 291.3 mA W−1) for P3HT-based OPDs.

scholarly journals Synthesis of Bithiophene-Based D-A1-D-A2 Terpolymers with Different A2 Moieties for Polymer Solar Cells via Direct Arylation

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 55 ◽  
Author(s):  
Jinfeng Huang ◽  
Zhenkun Lin ◽  
Wenhuai Feng ◽  
Wen Wang
Keyword(s):  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Open Circuit ◽  
Side Chain ◽  
Film Morphology ◽  
Photovoltaic Properties ◽  
Direct Arylation ◽  
Blend Film ◽  
Highest Occupied Molecular Orbital

A series of bithiophene (2T)-based D-A1-D-A2 terpolymers with different A2 moieties were prepared via direct arylation reaction. In these terpolymers, pyrrolo[3,4-c]pyrrole-1,4-dione (DPP) was selected as the first electron-accepting (A1) moiety, 2,1,3-benzothiadiazole (BT) or fluorinated benzothiadiazole (FBT) or octyl-thieno[3,4-c]pyrrole-4,6-dione (TPD) or 2,1,3-benzoselendiazole (SeT) was selected as the second electron-accepting (A2) moiety, while bithiophene with hexyl side chain was used as the electron-donating moiety. The UV-vis absorption, electrochemical properties, blend film morphology, and photovoltaic properties were studied to explore the effects of the A2 moiety. It is shown that these terpolymer films exhibit broad absorption (350–1000 nm), full width at half-maximum of more than 265 nm and ordered molecular packing. Varying the A2 moiety could affect the energy levels and blend film morphology leading to different polymer solar cell (PSC) performances of these (2T)-based D-A1-D-A2 terpolymers. As a result, the highest Jsc of 10.70 mA/cm2 is achieved for Polymer 1 (P1) with BT as A2 moiety, while the higher highest occupied molecular orbital (HOMO) level limits the open circuit voltage (Voc) and leads to a power conversion efficiency (PCE) of 3.46%.

Controlling Blend Film Morphology by Varying Alkyl Side Chain in Highly Coplanar Donor–Acceptor Copolymers for Photovoltaic Application

2011 ◽  
Vol 44 (16) ◽  
pp. 6370-6381 ◽  
Author(s):  
Yaowen Li ◽  
Yujin Chen ◽  
Xing Liu ◽  
Zhong Wang ◽  
Xiaoming Yang ◽  
...  
Keyword(s):  
Side Chain ◽  
Film Morphology ◽  
Alkyl Side Chain ◽  
Blend Film ◽  
Photovoltaic Application ◽  
Donor Acceptor

Synthesis, phase behaviour and photo-optical properties of bent-core methacrylate with azobenzene group and corresponding side-chain polymethacrylate

RSC Advances ◽  
2016 ◽  
Vol 6 (70) ◽  
pp. 65747-65755
Author(s):  
V. Novotná ◽  
A. Bobrovsky ◽  
V. Shibaev ◽  
D. Pociecha ◽  
M. Kašpar ◽  
...  
Keyword(s):  
Optical Properties ◽  
Polarized Light ◽  
Phase Behaviour ◽  
Side Chain ◽  
Azobenzene Group

Novel LC monomer and corresponding polymethacrylate are synthesized and their phase behaviour, photooptical properties and photoorientation under polarized-light action are studied.

Synthesis and Photorefractive Property of a Polymer Containing Azobenzene Group in the Side Chain

2002 ◽  
Vol 377 (1) ◽  
pp. 277-280 ◽  
Author(s):  
Phan-Seok Kim ◽  
Mi-Ra Kim ◽  
Gee-Young Sung ◽  
Ki-Hyun Kim ◽  
Chang-Sik Ha ◽  
...  
Keyword(s):  
Side Chain ◽  
Photorefractive Property ◽  
Azobenzene Group

scholarly journals Influence of Chromophoric Electron-Donating Groups on Photoinduced Solid-to-Liquid Transitions of Azopolymers

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 901 ◽  
Author(s):  
Jian Xu ◽  
Bin Niu ◽  
Song Guo ◽  
Xiaolei Zhao ◽  
Xiaoli Li ◽  
...  
Keyword(s):  
Essential Role ◽  
Side Chain ◽  
Practical Applications ◽  
General Lack ◽  
Azobenzene Group ◽  
Time Required ◽  
Electron Donating Groups ◽  
Azobenzene Derivatives ◽  
Insight Into ◽  
Photoisomerization Process

The photoinduced solid-to-liquid transitions property of azobenzene-containing polymers (azopolymers) enables azopolymers with various promising applications. However, a general lack of knowledge regarding the influence of structure of the azobenzene derivatives on the photoinduced liquefaction hinders the design of novel azopolymers. In the present study, a series of azopolymers with side chains containing azobenzene unit bearing alkyl electron-donating groups were synthesized. The photoisomerization and photoinduced liquefaction properties of newly synthesized azopolymers were investigated. Alkyl-based electron-donating group significantly facilitate the photoisomerization process of azopolymers in solution, as the electron-donating ability of substituents increased, the time required for photoisomerization of azopolymers continually deceased. Meanwhile, the electron-donating group can drastically accelerate photoinduced solid-to-liquid transitions of azopolymers, the liquefaction rate of obtained azopolymers gradually getting quicker as the electron-donating ability of substituents increased. This study clearly demonstrates that the electron-donating group that bearing in the azobenzene group of polymer side chain play an essential role on the photoinduced solid-to-liquid transitions of azopolymers, and hence, gives an insight into how to design novel azopolymers for practical applications.

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