Light-Responsive Polystyrene Films Doped with Tailored Heteroaromatic-Based Fluorophores
- 2 April 2013
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Macro Letters
- Vol. 2 (4) , 317-321
- https://doi.org/10.1021/mz400103s
Abstract
We describe a simple but effective strategy for imparting light-responsive peculiarity to polystyrene films. A pH-sensitive fluorescent dye having the electron-poor pyridine nucleus as a key structural feature was synthesized and dispersed at low loadings (0.2–0.5 wt %) in a PS matrix. Once light irradiation in the near-UV range was sent to PS/dye films, PS photooxidation likely occurred at the film surface with the formation of carboxylic compounds. These species locally promoted dye protonation, thus, yielding a clear change of the film emission from blue to green. This study opens the door to a wide range of light-responsive materials from easily accessible polymers, enabling the use of UV light as an effective trigger for smart materials and devices.This publication has 19 references indexed in Scilit:
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