Emissive cyanide-bridged bimetallic compounds as building blocks for polymeric antennae

被引：12
|
作者：
Cadranel, Alejandro [1 ]
Troselj, Bruno M. Aramburu [1 ]
Yamazaki, Shiori [2 ]
Albores, Pablo [1 ]
Kleiman, Valeria D. [2 ]
Baraldo, Luis M. [1 ]
机构：
[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, INQUIMAE, Dept Quim Anal Inorgan & Quim Fis, Buenos Aires, DF, Argentina
[2] Univ Florida, Dept Chem, Gainesville, FL 32611 USA
来源：
DALTON TRANSACTIONS | 2013年 / 42卷 / 48期
基金：
美国国家科学基金会;
关键词：
EXCITED-STATE PROPERTIES; ELECTRON-TRANSFER; SPECTROSCOPIC PROPERTIES; METAL CENTERS; COMPLEXES; RUTHENIUM; REDOX; SYSTEMS; COORDINATION; PHOSPHINE;
D O I：
10.1039/c3dt51164b
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A series of cyanide-bridged bimetallic compounds of the general formula [Ru(L)(bpy)(mu-NC)(M)](2-/-/2+) (L = tpy, 2,2'-6',2 ''-terpyridine, or tpm, tris(1-pyrazolyl)methane, bpy = 2,2'-bipyridine, M = Ru-II(CN)(5), Os-III(CN)(5), Os-II(CN)(5), Ru-II(py)(4)(CN), py = pyridine) have been synthesized and fully characterized. Most of them present MLCT emission (lambda = 690-730 nm, Phi = 10(-3)-10(-4)) and their photophysical properties resemble the ones of the respective mononuclear Ru(L)(bpy) species. The exception is when M is Os-III(CN)(5), where an intramolecular electron transfer quenching mechanism is proposed. The conditions that should be met for avoiding the reductive or oxidative quenching of the excited state are also discussed.
引用
收藏
页码：16723 / 16732
页数：10
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