Three benzothiazole-based two-photon absorption (2PA) chromophores (B1-3) were synthesized and the optical properties were investigated. The results illustrated the largest fluorescence quantum yield and effective 2PA cross-sections reached to 0.81 for compound B1 and 1013 GM for compound B3 in tetrahydrofuran solutions, respectively. Furthermore, the water-soluble fluorescent organic nanoparticles (FONs) possessing an embedded structure were prepared from the three compounds and Pluronic F127, which were successfully applied on two-photon nuclear envelope imaging.

中文翻译：

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具有嵌入结构的三种新型水溶性荧光有机纳米粒子：结构-活性关系和双光子生物成像应用

合成了三种基于苯并噻唑的双光子吸收（2PA）发色团（B1-3），并研究了其光学性质。结果示出的最大荧光量子产率和有效2PA横截面达到0.81化合物B1和1013 GM为化合物B3的四氢呋喃溶液，分别。此外，由三种化合物和Pluronic F127制备了具有嵌入式结构的水溶性荧光有机纳米粒子（FONs），并将其成功应用于双光子核包膜成像。