PHOTODRIVEN ENERGY-TRANSFER FROM CUPROUS PHENANTHROLINE DERIVATIVES

被引：32

作者：

CASTELLANO, FN ^{[1
]}

RUTHKOSKY, M ^{[1
]}

MEYER, GJ ^{[1
]}

机构：

[1] JOHNS HOPKINS UNIV,DEPT CHEM,BALTIMORE,MD 21218

来源：

INORGANIC CHEMISTRY | 1995年 / 34卷 / 01期

关键词：

D O I：

10.1021/ic00105a002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Direct evidence for energy transfer from cuprous diimine excited states(s) is reported for the first time. Visible excitation of Cu(dpp)(2)(PF6) (dpp is 2,9-diphenyl-1,10-phenanthroline) or Cu(dmp)(2)(PF6) (dmp is 2,9-dimethyl-1,10-phenanthroline) produces long-lived metal-to-ligand charge-transfer excited states which are quenched by the addition of anthracene. Stern-Volmer analysis yields energy transfer rates of (2.8 +/- 0.2) x 10(7) M(-1) S-1 from Cu(dpp)(2)(+)* and (2.0 +/- 0.2) x 10(8) M(-1) s(-1) from Cu(dmp)(2)(+)* to anthracene. The appearance of the triplet-to-triplet absorption of anthracene following excitation of the copper phenanthroline compounds confirms that the quenching mechanism is energy transfer. The efficiency of energy transfer from Cu(dmp)(2)(+)* to anthracene is about 1/4 that of the well-known Ru(bpy)(3)(2+)* sensitizer.

引用

页码：3 / 4

页数：2

共 36 条

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