Novel N-Containing pi-Conjugated Compounds: Synthesis, Physical Properties, and Functions

高荧光材料的研制是一个迫切而重要的课题。为此，我们设计了以吲哚[3,2,1-jk]咔唑（IC）和9,9'-二苯基-4,4',5,5'-双咔唑（DBC）为骨架的新型偶联化合物，并对其进行了合成，并对其光物理性质和功能进行了研究。我们研究了合成的化合物的光物理性质。结果表明，与溶液态的IC相比，三种IC衍生物的荧光最大值发生了色移，量子产率也有所提高。在固体状态下，虽然所有IC衍生物的荧光最大值都发生了进一步的色移，但只有一个IC衍生物的量子产率有所增加。另一方面，两种DBC衍生物的荧光最大值的色移和量子产率的增加与溶液和固体中的DBC相比都没有观察到。

The creation of highly fluorescent materials should be an urgent and significant subject. For this purpose, we designed the novel pi-conjugated compounds having indro[3,2,1-jk]carbazole (IC) and 9,9'-diphenyl-4,4',5,5'-biscarbazole (DBC) as a framework, synthesized them, and elucidated their photophysical properties and functions.We investigated the photophysical properties of synthesized compounds. As a result, the bathochromic shift of the fluorescence maximum and the increase of quantum yield in three IC derivatives were observed by comparison with those of IC in solution state. In solid state, although the further bathochromic shift of the fluorescence maximum of all IC derivatives were observed, the only one IC derivative showed the increase of quantum yield. On the other hand, neither of the bathochromic shift of the fluorescence maximum and the increase of quantum yield in two DBC derivatives were observed by comparison with those of DBC in solution and solid state.