Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084, USA.
Inorg Chem. 2010 Aug 2;49(15):6814-6. doi: 10.1021/ic1010117.
Delocalization of the charge-transfer excitation in the series Ru(NNN)(bpy)CN [bpy = 2,2'-bipyridine; 1, NNN = 2,2':6',2''-terpyridine; 2, NNN = 2-(2'-pyridyl)-1,10-phenanthroline or php; 3, NNN = 6'-(2''-pyridyl)dipyrido[3,2-a:2',3'-c]phenazine or dppzp] proves to be an effective way of tuning photophysical properties. Red-emitting 3 functions as a DNA "light switch", shows emission from a state with charge-transfer-to-phenazine character, and exhibits a significantly enhanced emission signal relative to 1 and other dppzp-containing ruthenium(II) complexes.
电荷转移激发的离域化在系列Ru(NNN)(bpy)CN中得到证实，其中[NNN = 2,2':6',2''-三联吡啶；1，NNN = 2-(2'-吡啶基)-1,10-菲咯啉或 php；2，NNN = 6'-(2''-吡啶基)二吡啶并[3,2-a:2',3'-c]吩嗪或 dppzp]，这是一种调节光物理性质的有效方法。发射红光的 3 用作 DNA“光开关”，显示出具有吩嗪电荷转移特征的状态的发射，并表现出相对于 1 和其他含 dppzp 的钌(II)配合物显著增强的发射信号。
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