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Issue 12, 2019
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Recovery of photodegraded rhodamine 6g in ester-containing polymer matrices

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Abstract

Self-healing, rhodamine 6g, dye-doped polymers are reported. The amplified spontaneous emission (ASE) photodegrades after repeated exposure to 532 nm laser light at 10 Hz. Recovery of the ASE signal is observed in dye-doped thermoplastic polyurethane and glycol-modified poly(ethylene terephthalate); both polymers contain repeating ester groups in their backbone. The polymer ester groups are hypothesized to mediate the full recovery of rhodamine 6g from a photodegraded state. A small amount of ASE recovery after photodegradation is observed in dye-doped poly(vinyl alcohol), >98% hydrolyzed, where conversion of rhodamine 6g from a long-lived dark state contributes to the majority of the increased ASE signal in poly(vinyl alcohol) while small amounts of recovery from interactions with residual acetate groups are also possible.

Graphical abstract: Recovery of photodegraded rhodamine 6g in ester-containing polymer matrices

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Article information


Submitted
28 May 2019
Accepted
07 Oct 2019
First published
08 Oct 2019

Photochem. Photobiol. Sci., 2019,18, 2865-2874
Article type
Paper

Recovery of photodegraded rhodamine 6g in ester-containing polymer matrices

N. D. Christianson, Y. Lu and N. J. Dawson, Photochem. Photobiol. Sci., 2019, 18, 2865
DOI: 10.1039/C9PP00243J

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