Molecular Packing and Solid‐State Photophysical Properties of 1,3,6,8‐Tetraalkylpyrenes
作者:Takanori Iwasaki、Shin Murakami、Youhei Takeda、Gaku Fukuhara、Norimitsu Tohnai、Yumi Yakiyama、Hidehiro Sakurai、Nobuaki Kambe
DOI:10.1002/chem.201903224
日期:2019.11.22
solution and solid states. In contrast, pyrenes bearing other alkyl groups exhibited an excimer emission in the solid state, similar to that of the parent pyrene. On studying the photophysical properties in the solid state with respect to the obtained crystal structures, the observed solid-state photophysical properties were found to depend on the relative position of the pyrene chromophores. The solid-state
本文描述了固态的1,3,6,8-四烷基py的光物理性质与分子取向之间的关系。引入具有不同链结构(就长度和分支而言)的烷基不会影响溶液的光物理性质,但会显着改变某些样品在固态下的发射波长和荧光量子产率。在1位,3位,6位和8位带有乙基,异丁基或新戊基的吡咯在溶液和固态下均显示相似的发射曲线。相反,带有其他烷基的pyr在固态下表现出准分子发射,类似于母体pyr。关于获得的晶体结构,研究固态的光物理性质,发现观察到的固态光物理性质取决于the发色团的相对位置。固态光物理性质可以由烷基控制,烷基提供变化的晶体堆积。在所测试的the中,1,3,6,8-四乙基py在固态下的荧光量子产率最高,为0.88。