Journal article
Photochrome-doped organic films for photonic keypad locks and multi-state fluorescence
C Ritchie, G Vamvounis, H Soleimaninejad, TA Smith, EJ Bieske, V Dryza
Physical Chemistry Chemical Physics | ROYAL SOC CHEMISTRY | Published : 2017
DOI: 10.1039/c7cp02818k
Open access
Abstract
The spectroscopic properties of poly(methyl methacrylate) polymer films doped with two kinds of photochromic molecular switches are investigated. A green-fluorescent sulfonyl diarylethene (P1) is combined with either a non-fluorescent diarylethene (P2) or red-fluorescent spiropyran (P3). Photoswitching between the colorless and colored isomers (P1: o-BTFO4 ↔ c-BTFO4, P2: o-DTE ↔ c-DTE, P3: SP ↔ MC) enables the P1 + P2 and P1 + P3 films to be cycled through three distinct states. From the initial state (o-BTFO4 + o-DTE/SP), irradiation with UV light generates the second state (c-BTFO4 + c-DTE/MC), where c-BTFO4 → c-DTE/MC energy transfer is established. Irradiation with green light then gener..
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Awarded by Australian Research Council
Funding Acknowledgements
V. D. acknowledges an Australian Renewable Energy Agency Postdoctoral Fellowship (6-F004) and support from the University of Melbourne's Early Career Researcher Grant Scheme. C. R. acknowledges the Australian Research Council for the DECRA Fellowship (DE130100615) and support from the University of Melbourne's Early Career Research Grant Scheme. G. V. acknowledges the Australian Research Council for the Australian Research Fellowship (DP1095404) and Linkage Infrastructure, Equipment and Facilities (LE150100049) support.