Conjugated Polymers with Main Chain Chirality. 2. Synthesis of Optically Active Polyarylenes

1996 ◽  
Vol 29 (15) ◽  
pp. 5075-5082 ◽  
Author(s):  
Qiao-Sheng Hu ◽  
Dilrukshi Vitharana ◽  
Gangyu Liu ◽  
Vijay Jain ◽  
Lin Pu
Keyword(s):  
Conjugated Polymers ◽  
Main Chain ◽  
Optically Active

Conjugated Polymers with Main Chain Chirality. 3. Synthesis of Optically Active Poly(aryleneethynylene)s

1996 ◽  
Vol 29 (15) ◽  
pp. 5083-5090 ◽  
Author(s):  
Liang Ma ◽  
Qiao-Sheng Hu ◽  
Kwon Yon Musick ◽  
Dilrukshi Vitharana ◽  
Chi Wu ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Main Chain ◽  
Optically Active

Conjugated Polymers with Main Chain Chirality. 1. Synthesis of an Optically Active Poly(arylenevinylene)†

1996 ◽  
Vol 29 (3) ◽  
pp. 1082-1084 ◽  
Author(s):  
Qiao-Sheng Hu ◽  
Dilrukshi Vitharana ◽  
Gang-Yu Liu ◽  
Vijay Jain ◽  
Michael W. Wagaman ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Main Chain ◽  
Optically Active

scholarly journals Synthesis of Polyazobenzenes Exhibiting Photoisomerization and Liquid Crystallinity

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 348 ◽  
Author(s):  
Masashi Otaki ◽  
Reiji Kumai ◽  
Hajime Sagayama ◽  
Hiromasa Goto
Keyword(s):  
Conjugated Polymers ◽  
Main Chain ◽  
Cross Coupling ◽  
Industrial Applications ◽  
Optical Absorption Spectroscopy ◽  
X Ray Diffraction ◽  
Liquid Crystallinity ◽  
X Ray ◽  
Cis And Trans ◽  
Chain Type

While only a few studies have investigated the synthesis of main chain-type polyazobenzenes, they continue to draw an increasing amount of attention owing to their industrial applications in holography, dyes, and functional adhesives. In this study, dibromoazobenzene was prepared as a monomer for constructing azo-based π-conjugated polymers. Miyaura–Suzuki cross-coupling polymerization was conducted to develop copolymers containing an azobenzene unit as a photoisomerization block and a pyrimidine-based liquid crystal generator block. The prepared polymers exhibited thermotropic liquid crystallinity and underwent cis and trans photoisomerization upon irradiation with ultraviolet and visible light. Furthermore, the photoisomerization behavior was examined using optical absorption spectroscopy and synchrotron X-ray diffraction spectrometry.

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