Dibenzo [a, g] corannulene-phenoxazine dyads: Facile synthesis and optoelectronic properties
作者:Yuming Yu、Rongrong Yang、Wei Lan、Xin Wang、Yaqiong Wang、Ming Gao、Xin Xu、Lei Shen、Dou Wang、Duozhi Wang、Ablimit Abdukader、Xiaodong Cai、Zhenjiang Liang、Hui Tan
DOI:10.1016/j.dyepig.2023.111079
日期:2023.3
phenoxazine (PXZ) features extraordinary optoelectronic properties. In this study, two dibenzo [a, g] corannulene-phenoxazine dyads, BBC-C-PXZ and BBC-N-PXZ, connected via C–C and C–N bonds, respectively, were successfully prepared using PXZ as an electron donor and dibenzo [a, g] corannulene (BBC) as an electron acceptor. Photoelectrical properties of the compounds were studied using UV–vis absorption
Corannulene 具有奇特的拓扑结构,而吩恶嗪 (PXZ) 具有非凡的光电特性。在这项研究中,使用 PXZ 作为电子供体,分别通过 C-C 和 C-N 键连接的两个二苯并 [a, g] 邻环烯-吩恶嗪二联体 BBC-C-PXZ和BBC-N-PXZ成功制备和二苯并 [a, g] 环烯 (BBC) 作为电子受体。通过紫外-可见吸收、发光光谱、电化学测试和理论计算研究了化合物的光电性质。两种二元体在溶液和聚集状态下均显示 Curve-Twist 分子内电荷转移 (C-TICT),这可以用BBC-C-PXZ来解释凹凸晶体堆积方式。它们进一步表现出中等至良好的单线态氧量子产率,BBC-N-PXZ在甲苯中为 42.3%,而BBC-C-PXZ在正己烷中仅为 14.3%。BBC-N-PXZ (通过C-N 键连接)表现出对比鲜明的可逆和抗疲劳“开启”机械变色行为,在外部刺激下表现出蓝移,而BBC-C-PXZ(由