ChemInform Abstract: Charge‐Transfer Absorption and Emission of Cu(NN)+ 2 Systems.

Ichinaga, A. K.; Kirchhoff, Jon R.; McMillin, David R.; Dietrich‐Buchecker, Christiane; Marnot, Pascal A.; Sauvage, Jean Pierre

doi:10.1002/chin.198814033

Cited by 2 publications

(2 citation statements)

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“…Also significant in this regard is that the above correlation is lost in a rigid matrix at 77 K, where exciplex quenching should be inhibited. 43 It is intriguing to note that the Cu(phen)2+ system does not exhibit detectable luminescence even at 77 K. Since its absorption spectrum is similar to that of Cu(dmp)2+ and those of the other emitting systems, we attribute the lack of emission to efficient nonradiative decay rather than to an inefficient radiative process.…”

Section: Resultsmentioning

confidence: 86%

Charge-transfer absorption and emission of Cu(NN)2+ systems

Ichinaga¹,

Kirchhoff²,

McMillin³

et al. 1987

Inorg. Chem.

171

151

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Section: Resultsmentioning

confidence: 86%

Charge-transfer absorption and emission of Cu(NN)2+ systems

Ichinaga¹,

Kirchhoff²,

McMillin³

et al. 1987

Inorg. Chem.

171

151

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“…In homoleptic Cu(I) polypyridine complexes, sufficiently bulky ligand substituents at the 2-and 9-positions were found to be required for luminescence, with their lifetimes being ligand, concentration and solvent dependent. 18,19 [Cu I (dmp) 2 ] + (dmp =2,9-dimethyl-1,10-phenanthroline) is one of the most studied cuprous diimine compounds and its mechanism of generating the MLCT state is generally accepted. 7−14 The Cu I ground state has a d 10 electron configuration, with a slightly distorted tetrahedral geometry (C 2 ).…”

Section: ■ Introductionmentioning

confidence: 99%

Energy Dispersive XAFS: Characterization of Electronically Excited States of Copper(I) Complexes

et al. 2013

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Energy dispersive X-ray absorption spectroscopy (ED-XAS), in which the whole XAS spectrum is acquired simultaneously, has been applied to reduce the real-time for acquisition of spectra of photoinduced excited states by using a germanium microstrip detector gated around one X-ray bunch of the ESRF (100 ps). Cu K-edge XAS was used to investigate the MLCT states of [Cu(dmp)2]+ (dmp =2,9-dimethyl-1,10-phenanthroline) and [Cu(dbtmp)2]+ (dbtmp =2,9-di-n-butyl-3,4,7,8-tetramethyl-1,10-phenanthroline) with the excited states created by excitation at 450 nm (10 Hz). The decay of the longer lived complex with bulky ligands, was monitored for up to 100 ns. DFT calculations of the longer lived MLCT excited state of [Cu(dbp)2]+ (dbp =2,9-di-n-butyl-1,10-phenanthroline) with the bulkier diimine ligands, indicated that the excited state behaves as a Jahn–Teller distorted Cu(II) site, with the interligand dihedral angle changing from 83 to 60° as the tetrahedral coordination geometry flattens and a reduction in the Cu–N distance of 0.03 Å.

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ChemInform Abstract: Charge‐Transfer Absorption and Emission of Cu(NN)+ 2 Systems.

Cited by 2 publications

References 1 publication

Charge-transfer absorption and emission of Cu(NN)2+ systems

Charge-transfer absorption and emission of Cu(NN)2+ systems

Energy Dispersive XAFS: Characterization of Electronically Excited States of Copper(I) Complexes

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