Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Small. 2015 Mar 18;11(11):1335-44. doi: 10.1002/smll.201402051. Epub 2014 Oct 22.
In this paper seven salts of pyridinium-substituted tetraphenylethylene with different anions are reported. They show typical aggregation-induced emission. Crystal structures of three of the salts with (CF(3)SO(2))(2) N(-), CF(3) SO(3)(-), and SbF(6)(-) as the respective counter anions, are determined. The emission behavior of their amorphous and crystalline solids is investigated. Both amorphous and crystalline solids, except for the one with I(-), are highly emissive. Certain amorphous solids are red-emissive with almost the same quantum yields and fluorescence life-times. However, some crystalline solids are found to show different emission colors varying from green to yellow. Thus, their emission colors can be tuned by the counter anions. Furthermore, certain crystalline solids are highly emissive compared to the respective amorphous solids. Such solid-state emission behavior of these pyridinium-substituted tetraphenylethylene salts is interpreted on the basis of their crystal structures. In addition, optical waveguiding behavior of fabricated microrods is presented.
本文报道了七种吡啶取代的四苯乙烯盐与不同阴离子的配合物。它们都表现出典型的聚集诱导发光。三种盐的晶体结构，（CF3SO2）2N-，CF3SO3-，和 SbF6-，已被确定。对其无定形和结晶固体的发光行为进行了研究。除了碘盐之外，无定形和结晶固体都具有很强的发光性。某些无定形固体具有几乎相同的量子产率和荧光寿命的红色发光。然而，一些结晶固体被发现显示不同的发射颜色，从绿色到黄色。因此，它们的发射颜色可以通过抗衡阴离子来调节。此外，某些结晶固体比相应的无定形固体具有更高的发光性。基于这些吡啶取代的四苯乙烯盐的晶体结构，对它们的固态发光行为进行了解释。此外，还介绍了所制备的微棒的光波导行为。
