Premium
A Highly Fluorescent and Photoresponsive Polymer Gel Consisting of Poly(acrylic acid) and Supramolecular Cyanostilbene Crosslinkers
Author(s) -
Kim HyeongJu,
Lee Hyun Jun,
Chung Jong Won,
Whang Dong Ryeol,
Park Soo Young
Publication year - 2019
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201801348
Subject(s) - fluorescence , materials science , photochemistry , polymer , supramolecular chemistry , photoisomerization , supramolecular polymers , acrylic acid , hydrogen bond , polymer chemistry , derivative (finance) , isomerization , catalysis , organic chemistry , molecule , chemistry , copolymer , optics , physics , composite material , economics , financial economics
A poly(acrylic acid)‐based polymer gel exhibiting strong fluorescence and high photoresponsibility is prepared by using a cyanostilbene derivative as a self‐assembling supramolecular crosslinking agent, which generates conceptually new multiple hydrogen bonds in the gel system. This polymer gel in ethanol shows the gel‐to‐sol transition upon UV light irradiation with concomitant fluorescence color and intensity changes, which are attributed to the trans ‐to‐ cis photoisomerization of the supramolecular crosslinkers. Aggregation‐induced enhanced emission (AIEE) behavior of the trans ‐cyanostilbene derivative enables a highly fluorescent polymer gel (Φ F = 0.68) with green color (λ em = 541 nm), which can be switched into a blue fluorescent sol (λ em = 506 nm and Φ F = 0.12) upon UV irradiation.