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.

中文翻译：

---

在含酯的聚合物基质中回收光降解的若丹明6g。

据报道，自修复的罗丹明6g染料掺杂聚合物。重复暴露于10 Hz的532 nm激光后，放大的自发发射（ASE）发生光降解。在染料掺杂的热塑性聚氨酯和乙二醇改性的聚对苯二甲酸乙二醇酯中观察到ASE信号的恢复。两种聚合物在其主链中均包含重复的酯基。假设聚合物酯基团介导了罗丹明6g从光降解状态的完全回收。在水解程度大于98％的染料掺杂聚乙烯醇中观察到了光降解后的少量ASE回收，其中若丹明6g从长寿命的暗态转化为聚乙烯（乙烯基）中大部分增加的ASE信号乙醇），同时也可以从与残留乙酸酯基团的相互作用中少量回收。