Journal
EUROPEAN POLYMER JOURNAL
Volume 42, Issue 12, Pages 3303-3310Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2006.08.020
Keywords
polythiophene; azobenzene; chromism; azopolymer
Categories
Ask authors/readers for more resources
As a preliminary study aiming to possible applications, a polythiophene derivative with an azobenzene moiety (polyazothiophene) was synthesized and characterized by FTIR, H-1 NMR, DSC and HPSEC. Some aspects on the thermo- and solvatochromic properties of polyazothiophene, such as the influence of different solvents and solution concentration on the thermochromic effect, and the use of a large polarity range of solvents as well as an acid media in the solvatochromic effect were explored. Reversible thermochromic properties of dimethylformamide and toluene solutions were analyzed in the temperature range of 10-70 degrees C showing a blue-shift spectrum variation with temperature increase. Solvatochromic properties were observed for pure solvents and THF/hexane mixtures. Another chromic effect was achieved upon the addition of a protonic acid to the azothiophene polymer solution as result of the side- and main-chain protonation. (c) 2006 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available