Green photoluminescence from Platinum(II) complexes bearing silylacetylide ligands

被引：77
|
作者：
Hua, F
Kinayyigit, S
Cable, JR
Castellano, FN [1 ]
机构：
[1] Bowling Green State Univ, Dept Chem, Bowling Green, OH 43403 USA
[2] Bowling Green State Univ, Ctr Photochem Sci, Bowling Green, OH 43403 USA
来源：
INORGANIC CHEMISTRY | 2005年 / 44卷 / 03期
关键词：
D O I：
10.1021/ic048498j
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The synthesis, structural characterization, photoluminescence properties, and density functional theory analysis of three Pt(II) diimine complexes, Pt(dbbpy)(CdropCR)(2) [dbbpy = 4,4'-di(tert-butyl-2,2'-bipyridine; R = -SiMe3, -CdropC-SiMe3, or -t-Bu], are presented. The Pt(dbbpy)(CdropC-tBu)(2) complex serves as a carbon-based ligand structure for which the photophysical properties of the two silicon-bearing complexes are compared in dichloromethane. Pt(dbbpy)(CdropC-SiMe3)(2) and Pt(dbbpy)(CdropC-CdropC-SiMe3)(2) display visible absorptions with strong green emission (lambda(emmax) = 526 and 524 nm, respectively) while Pt(dbbpy)(CdropCt-Bu)(2) displays efficient, long-lived yellow emission (lambda(emmax) = 557 nm). Direct side by side comparisons of Pt(dbbpy)(CdropC-SiMe3)(2) and Pt(dbbpy)(CdropC-t-Bu)(2) suggest that the difference in excited state energy results from the relative sigma-donor strength of the acetylide ligands.
引用
收藏
页码：471 / 473
页数：3
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