We have synthesized two new two-photon active dendritic molecules with tetraphenylmethane core with four phenothiazine-based arms. They show good solubility in organic solvents, including dichloromethane, chloroform, toluene and tetrahydrofuran. It is found that the two dendrimers display strong two-photon absorption and two-photon excited up-conversion fluorescence at 800 nm.

中文翻译：

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具有四苯基甲烷核的吩噻嗪类树枝状大分子的合成及双光子性质

我们已经合成了具有四苯基甲烷核心和四个吩噻嗪基臂的两个新的双光子活性树突分子。它们在有机溶剂（包括二氯甲烷，氯仿，甲苯和四氢呋喃）中显示出良好的溶解性。发现这两种树状聚合物在800nm处显示出强的双光子吸收和双光子激发的上转换荧光。