Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 239, Issue -, Pages 474-480Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.07.172
Keywords
Fluorescence; Photochromism; Photostability; Microstructured optical fibre; Optical fibre sensors; Azobenzene; Spiropyran
Funding
- Centre for Nanoscale BioPhotonics, through Australian Research Council (ARC) [CE140100003]
- ARC Super Science Fellowship
- SA State Government
- ARC Georgina Sweet Laureate Fellowship
- OptoFab node of the Australian National Fabrication Facility (ANFF) utilising Commonwealth
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The fluorescence spectra and photostability under 532 nm laser excitation of four different common photoswitches (an azobenzene, spiropyran, indolylfulgide, and a diarylperfluorocyclopentene) were investigated in a silica microstructured optical fibre. An example of each photoswitch was examined in solution and physically adsorbed to the silica fibre surface. This comparison was made to define fluorescence behaviour in these two states and to determine which photoswitch has the best performance in this light intense microenvironment. The azobenzene and the spiropyran switches demonstrated the strongest fluorescence response and the least degradation of the fluorescence signal. (C) 2016 Elsevier B.V. All rights reserved.
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