Black MLCT absorbers

Anderson, Peter A., Strouse, Geoffery F., Treadway, Joseph A., Keene, F. Richard, and Meyer, Thomas J. (1994) Black MLCT absorbers. Inorganic Chemistry, 33 (18). pp. 3863-3864.

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[Extract] A general approach has been developed for the preparation of heteroleptic tris(bidentate)ruthenium(II) complexes which exhibit significant continuous light absorption throughout the UV and visible regions. It utilizes separate metal-to-ligand charge transfer (MLCT) transitions to different heterocyclic ligands and the incorporation of the diethyldithiocarbamate anion (Et₂dtc-) to shift the MLCT bands uniformly to the red. In the spectrum of [Ru{(EtCO₂)₂bpy}(dpa)(Et₂dtc)]⁺ ((EtCO₂)₂bpy is 4,4'-bis(carboxyethyl)-2,2'-bipyridine) significant absorption (ε > 3000) extends past 700 nm. These complexes can be photochemically inert and exhibit near-IR emission with appreciable excited state lifetimes.

Item ID: 22750
Item Type: Article (Research - C1)
ISSN: 1520-510X
Keywords: transfer excited-states; ruthenium(ii) complexes resonance raman carbonyl-complexes; electron-transfer; metal-complexes; ligand; electrochemistry; luminescence; spectroscopy
Date Deposited: 16 Aug 2012 04:57
FoR Codes: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030207 Transition Metal Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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