EXCITED-STATE ANNIHILATION PROCESS INVOLVING A CYCLOMETALATED PLATINUM(II) COMPLEX

被引：25

作者：

MAESTRI, M ^{[1
]}

SANDRINI, D ^{[1
]}

VONZELEWSKY, A ^{[1
]}

DEUSCHELCORNIOLEY, C ^{[1
]}

机构：

[1] UNIV FRIBOURG,INST INORGAN CHEM,CH-1700 FRIBOURG,SWITZERLAND

来源：

INORGANIC CHEMISTRY | 1991年 / 30卷 / 11期

关键词：

D O I：

10.1021/ic00011a005

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The Pt(tpy)(ppz) complex exhibits strong luminescence with a relatively long excited-state lifetime (15.3-mu-s) in deaerated acetonitrile solution, at room temperature and at low excitation intensity, and can be easily involved in excited-state quenching processes. The 3CT excited state is, in fact, quenched (i) by oxygen (k(q) approximately equal 10(9) M-1 s-1), (ii) by the ground-state complex (k(q) = 5.7 x 10(7) M-1 s-1), and (iii) by another 3CT excited state in an annihilation process, which is practically diffusion controlled (k3 > 6 x 10(9) M-1 s-1). The ground-state quenching and the annihilation process most probably occur via an excimer formation mechanism.

引用

页码：2476 / 2478

页数：3

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