Among various light emission phenomena, multicolour light emission, such as white light emission, is an interesting phenomenon. Bis-styrylbenzene derivatives show unique and excellent emission behaviours. In this study, three types of bis-styrene derivatives, with thiophene, pyridine, and benzene rings at the central position, were synthesised, and their photophysical properties were studied in detail. Among them, pristine crystals of E,E-2,6-bis(4-cyanostyryl)pyridine (Py4CN) showed a slight bluish-white emission because the Py4CN pristine crystals were mixtures of two separate crystals emitting blue and yellow-green fluorescence.

中文翻译：

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E,E-2,6-双(4-氰基苯乙烯基)吡啶原始晶体发出轻微的蓝白色荧光

在各种发光现象中，多色发光，例如白光发光，是一种有趣的现象。双苯乙烯基苯衍生物表现出独特而优异的排放行为。本研究合成了中心位置为噻吩、吡啶和苯环的三种双苯乙烯衍生物，并对其光物理性质进行了详细研究。其中，E , E -2,6-bis(4-cyanostyryl)pyridine (Py4CN) 的原始晶体显示出轻微的蓝白色发射，因为 Py4CN 原始晶体是两种独立晶体的混合物，发出蓝色和黄绿色荧光。