Fluorescent electrospun polymers doped with new 10-ethyl-10H-phenothiazine-3-carboxylate derivatives were prepared, and their optical properties were investigated. The fluorescence emission properties were studied in solution and solid state for 10-ethyl-10H-phenothiazine-3-carboxylic acid (2) and for two if its salts (3a, b). The quantum yields and fluorescence lifetimes were also determined for 10-ethyl-10H-phenothiazine-3-carboxylates before and after incorporation in polymeric matrices. From fluorescence emission in solid state and in solution, large Stokes shifts were recorded in all investigated solvents for the salts 3a, b.

中文翻译：

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用于荧光纳米材料的新型荧光吩噻嗪羧酸盐

制备了掺杂新型 10-乙基-10 H-吩噻嗪-3-羧酸衍生物的荧光电纺聚合物，并研究了它们的光学性能。在溶液和固态下研究了 10-乙基-10 H-吩噻嗪-3-羧酸（2）和两种盐（3a，b）的荧光发射特性。还测定了 10-乙基-10 H-吩噻嗪-3-羧酸盐在聚合物基质中掺入前后的量子产率和荧光寿命。从固态和溶液中的荧光发射来看，在所有研究的盐3a、b溶剂中都记录了大的斯托克斯位移。