Highly-phosphorescent tungsten(0) carbonyl pyridyl-imidazole complexes as photosensitisers

被引：6

作者：

Lee, Jia Jin ^{[1
]}

Yap, Chew Pheng ^{[1
]}

Chwee, Tsz Sian ^{[2
]}

Fan, Wai Yip ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem, 3 Sci Dr 3, Singapore 117543, Singapore

[2] ASTAR, Inst High Performance Comp, 1 Fusionopolis Way, Singapore 138632, Singapore

来源：

DALTON TRANSACTIONS | 2017年 / 46卷 / 33期

关键词：

DIAMINE-TETRACARBONYL COMPLEXES; LIGHT PHOTOREDOX CATALYSIS; ROOM-TEMPERATURE SOLUTION; VISIBLE-LIGHT; RUTHENIUM(II) COMPLEXES; CHROMIUM(0) MOLYBDENUM(0); ABSORPTION-SPECTRA; EXCITED-STATES; D6; STRUCTURE; PHOTOCHEMISTRY;

D O I：

10.1039/c7dt02397a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Photoluminescence data are reported for two W(CO)(4)L complexes (L = 2-(1H-imidazol-2-yl) pyridine and 2-(2'-pyridyl) benzimidazole) in room-temperature solutions. The bidentate ligands consist of a pyridine and an imidazole moiety connected by a C-C bond. The complexes have been found to exhibit enhanced phosphorescence from the metal-to-ligand charge transfer (MLCT) excited state with quantum yields in the order of 10(-3), almost two orders of magnitude higher than those reported for W(CO)(4)(diimine) complexes. One of the complexes W(CO) 4(2-(2'-pyridyl) benzimidazole) can serve as an efficient visible-light photosensitiser for the isomerisation of aromatic alkenes with efficiency comparable to and even exceeding that of the well-studied ruthenium tris-bipyridine complex, Ru(bpy)Cl-2.

引用

页码：11008 / 11012

页数：5