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Controllable preparation of a soluble trapezoidal polyacetylene with broadband absorption by a one‐step strategy
Author(s) -
Zhang Fayin,
Guang Shanyi,
Wei Gang,
Zhao Gang,
Ke Fuyou,
Feng Yihu,
Xu Hongyao
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.44096
Subject(s) - polyacetylene , broadband , absorption (acoustics) , materials science , polymer chemistry , chemical engineering , polymer science , optics , composite material , physics , polymer , engineering
A new trapezoidal functional polyacetylene with broadband absorption from the visible to the near infrared and excellent thermal stability was effectively prepared by molecular design and a controllable strategy. It is completely soluble in common organic solvents because the 6‐ethynyl‐2‐methylquinoline copolymerized with phenylacetylene. The absorption spectrum can be effectively adjusted by controlling the ratio of semi‐squaraine and squaraine in the process of preparation. Interestingly, it was found that the improvement of thermal stability of the target product may originate from the synergy of the shielding effect of the quinoline ring to the main chain and the strong interactions between squaraine groups. The formation mechanism of the broadband absorbance properties was studied through an online spectrum tracking method. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44096.