CT-CT annihilation in rigid perylene end-capped pentaphenylenes.
CT-CT annihilation in rigid perylene end-capped pentaphenylenes.
复制标题
刚性苝封端的五亚苯基中的 CT-CT 湮灭。
DOI：
10.1021/ja064794e
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发表时间：
2007
影响因子：
15
通讯作者：
F. D. De Schryver
中科院分区：
文献类型：
--
作者：
E. Fron;T. Bell;Antoine Van Vooren;G. Schweitzer;J. Cornil;D. Beljonne;P. Toele;Josemon Jacob;K. Müllen;J. Hofkens;M. van der Auweraer;F. D. De Schryver
通过飞秒瞬态吸收和单光子定时测量，详细研究了端部为苝单亚胺的三个五苯炔单元组成的刚性扩展体系的光谱特性。在极性溶剂中，分子体系表现出光致电荷转移现象。当激发功率逐渐增大时，可以观察到具有电荷转移特征的两态湮灭。对端部为苝单亚胺的两个五苯单元组成的体系进行的量子化学计算有力地支持了实验数据。
The time-dependent spectral properties of a rigid, extended system consisting of three pentaphenylene units end-capped with perylene monoimide were investigated in detail by femtosecond transient absorption and single photon timing measurements. In polar solvents, the molecular system shows the occurrence of photoinduced charge transfer. Upon gradually increasing the excitation power, annihilation involving two states with charge-transfer character has been observed. Quantum-chemical calculations performed on the system consisting of two pentaphenylene units end-capped with perylene monoimide strongly support the experimental data.