Shen Yue, Liu Haichao, Cao Jungang, Zhang Shitong, Li Weijun, Yang Bing
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
Phys Chem Chem Phys. 2019 Jul 10;21(27):14511-14515. doi: 10.1039/c9cp02656h.
Herein, an unusual blue shift in excimer fluorescence with increasing temperature was observed from a crystal with a discrete π-π anthracene dimer, originating from the more temperature-sensitive intermolecular geometry of the π-π dimer (e.g., π-π distance) compared to the intramolecular geometry of the monomer, which is confirmed by temperature-dependent single-crystal X-ray diffraction (XRD) measurements.
在此，从具有离散π-π蒽二聚体的晶体中观察到，随着温度升高，准分子荧光出现异常蓝移，这源于π-π二聚体的分子间几何结构（例如π-π距离）比单体的分子内几何结构对温度更敏感，这一点通过变温单晶X射线衍射（XRD）测量得到了证实。
