Mechano-fluorochromic behavior of AEE polyurethane films and their high sensitivity to halogen acid gasElectronic supplementary information (ESI) available. See DOI: 10.1039/c8ra10486g

Three polyurethanes with different contents of tetraaryl-buta-1,3-diene derivatives in the soft segment (STMPU-25/STMPU-50/STMPU-75) have been synthesized and found to present aggregation-enhanced emission features. The fluorescence intensity of polymer films was greatly enhanced with increasing ten...

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Main Authors Wang, Kun, Wang, Meng, Lu, Hao, Liu, Beibei, Huang, Mingming, Yang, Jiping
Format Journal Article
Published 26.03.2019
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Summary:Three polyurethanes with different contents of tetraaryl-buta-1,3-diene derivatives in the soft segment (STMPU-25/STMPU-50/STMPU-75) have been synthesized and found to present aggregation-enhanced emission features. The fluorescence intensity of polymer films was greatly enhanced with increasing tensile stress. Also, polyurethanes with higher aggregation-induced emission fluorogen content had stronger mechano-fluorochromic behavior in the same tension state. Moreover, the resulting polyurethane films possessed high sensitivity for halogen acid gas, suggesting their potential applications in environmental monitoring fields. (a) Polyurethanes with higher content of TABDAA2 presented better positive correlation between fluorescence and strain. (b) Sensing mechanism of STMPU-50 for detection of HCl.
Bibliography:10.1039/c8ra10486g
Electronic supplementary information (ESI) available. See DOI
ISSN:2046-2069
DOI:10.1039/c8ra10486g