Synthesis, structures and photophysical properties of boron fluorine derivatives based on pyridine/1,8-naphthyridine
Synthesis, structures and photophysical properties of boron fluorine derivatives based on pyridine/1,8-naphthyridine
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吡啶/1,8-萘啶硼氟衍生物的合成、结构及光物理性质
DOI：
10.1016/j.dyepig.2014.01.022
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发表时间：
2014-06-01
影响因子：
4.5
通讯作者：
Fu, Wen-Fu
中科院分区：
文献类型：
--
作者：
Li, Zhensheng;Lv, Xiaojun;Fu, Wen-Fu
合成了三种含吡啶/1，8-萘啶的硼氟配合物B1-B3，并对其结构进行了表征。化合物B1和B2在溶液和固体状态下均表现出较强的荧光。含时密度泛函理论计算证实了分子内电荷转移可以解释溶液中的发光性质和大的Stokes位移。粉末状B1的绝对量子产率达到0.48，这是由于抑制了平面π。π叠加B1和B2的单晶X-射线衍射分析表明，分子间弱的CH。F和Hπ相互作用阻碍了π的进一步堆叠。PI二聚体，从而防止聚集诱导的淬灭。由硼-二吡咯亚甲基和1，8-萘啶荧光团组成的配合物113具有潜在的应用价值。(c)2014爱思唯尔有限公司版权所有。
Three boron fluorine complexes B1-B3 containing pyridine/1,8-naphthyridine were synthesized and structurally characterized. Compounds B1 and B2 exhibited strong fluorescence in solution and solid state. The solvent-dependent luminous properties and large Stokes shift in solution could be explained by intramolecular charge transfer, which is confirmed by time-dependent density functional theory calculation. The absolute quantum yield of B1 in powder form reached 0.48 because of inhibiting planar pi...pi stacking. Single-crystal X-ray diffraction analyses of B1 and B2 revealed that weak intermolecular C H...F and H...pi interactions hinder further stacking of pi...pi dimers, consequently preventing aggregation-induced quenching. Complex 113, composed of boron-dipyrromethene and 1,8-naphthyridine fluorophore, had potential applications as a pH ratiometric fluorescent sensor. (c) 2014 Elsevier Ltd. All rights reserved.