Realization of Distinct Mechano- and Piezochromic Behaviors <i>via</i> Alkoxy Chain Length-Modulated Phosphorescent Properties and Multidimensional Self-Assembly Structures of Dinuclear Platinum(II) Complexes
作者:Yeye Ai、Yongguang Li、Michael Ho-Yeung Chan、Guanjun Xiao、Bo Zou、Vivian Wing-Wah Yam
DOI:10.1021/jacs.1c04200
日期:2021.7.21
apparent color, solubility, luminescence properties, and self-assembly behaviors have been remarkably modulated. In the solid state, the luminescence properties have been found to arise from emission origins that switch between the 3MMLCT excited state in the red solids and the 3IL excited state in the yellow state, depending on the alkoxy chain lengths. The luminescence of the yellow solids is found
在这项工作中,通过将不同长度的烷氧基链引入双核环金属化铂 (II) 配合物,显着调节了表观颜色、溶解度、发光特性和自组装行为。在固体状态下,发光特性已被发现从发射起源到出现的间开关3在红色固体和MMLCT激发态3IL 激发态处于黄色状态,取决于烷氧基链的长度。发现黄色固体的发光在机械研磨下显示出明显的红移,在可控静水压力下强度降低。然而,由于各向同性压缩引起的 Pt…Pt 和 π-π 距离的缩短,红色固体的发射表现出红移和强度降低。通过结合从 X 射线衍射 (XRD)、红外 (IR) 和 X 射线单晶结构获得的数据,更好地理解了分子聚集与光物理性质之间的关系,表明烷氧基的长度链在控制超分子组装中起着重要作用。