Exciplex Formation between Silver Ions and the Lowest MLCT Excited State of the Tris(Bipyrazine)Ruthenium(2) Cation

1988 ◽  
Author(s):  
A. B. Lever ◽  
Penny Seymour ◽  
Pamela Auburn
Keyword(s):  
Excited State ◽  
Silver Ions ◽  
Exciplex Formation

ChemInform Abstract: Exciplex Formation Between Silver Ions and the Lowest MLCT Excited State of the Tris(Bipyrazine)ruthenium(II) Cation.

ChemInform ◽  
1988 ◽  
Vol 19 (32) ◽  
Author(s):  
A. B. P. LEVER ◽  
P. SEYMOUR ◽  
P. R. AUBURN
Keyword(s):  
Excited State ◽  
Silver Ions ◽  
Exciplex Formation

Exciplex formation between silver ions and the lowest MLCT excited state of the tris(bipyrazine)ruthenium(II) cation

1988 ◽  
Vol 145 (1) ◽  
pp. 43-48 ◽  
Author(s):  
A.B.P. Lever ◽  
Penny Seymour ◽  
Pamela R. Auburn
Keyword(s):  
Excited State ◽  
Silver Ions ◽  
Exciplex Formation

Rare earth excited state quenching as a probe to exciplex formation in polythylene phthalate doped with the Eu(pya) 3 ·2H 2 O complex

1994 ◽  
Vol 60-61 ◽  
pp. 493-496 ◽  
Author(s):  
W.M. de Azeveˇdo ◽  
P.N.M. dos Anjos ◽  
O.L. Malta ◽  
G.F. de Sa´
Keyword(s):  
Rare Earth ◽  
Excited State ◽  
Exciplex Formation ◽  
Excited State Quenching ◽  
The Eu

ChemInform Abstract: Dispersed Fluorescence of Jet-Cooled Tryptophan: Excited State Conformers and Intramolecular Exciplex Formation.

ChemInform ◽  
1987 ◽  
Vol 18 (19) ◽  
Author(s):  
T. R. RIZZO ◽  
Y. D. PARK ◽  
D. H. LEVY
Keyword(s):  
Excited State ◽  
Exciplex Formation ◽  
Dispersed Fluorescence

scholarly journals Energy Transfer, Excited-State Deactivation, and Exciplex Formation in Artificial Caroteno-Phthalocyanine Light-Harvesting Antennas†

2007 ◽  
Vol 111 (24) ◽  
pp. 6868-6877 ◽  
Author(s):  
Rudi Berera ◽  
Ivo H. M. van Stokkum ◽  
Gerdenis Kodis ◽  
Amy E. Keirstead ◽  
Smitha Pillai ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excited State ◽  
Light Harvesting ◽  
Exciplex Formation

Exciplex Formation and Excited State Deactivation of Difluoroborondipyrromethene (Bodipy) Dyads

ChemPhysChem ◽  
2010 ◽  
Vol 11 (8) ◽  
pp. 1685-1692 ◽  
Author(s):  
Andrew C. Benniston ◽  
Graeme Copley ◽  
Helge Lemmetyinen ◽  
Nikolai V. Tkachenko
Keyword(s):  
Excited State ◽  
Exciplex Formation

scholarly journals Modeling and characterization of exciplexes in photoredox CO2 reduction: Insights from quantum chemistry and fluorescence spectroscopy

2021 ◽  
Author(s):  
Kareesa Kron ◽  
Jonathan Ryan Hunt ◽  
Jahan Dawlaty ◽  
Shaama Mallikarjun Sharada
Keyword(s):  
Excited State ◽  
Fluorescence Spectroscopy ◽  
Density Functional ◽  
Decomposition Analysis ◽  
Co2 Reduction ◽  
Energy Decomposition Analysis ◽  
Emission Frequency ◽  
Exciplex Formation ◽  
Exciplex Emission

Interactions between excited state arenes and amines can lead to the formation of structures with distinct emission behavior. These excited state complexes or exciplexes can reduce the ability of the arene to participate in other reactions, such as CO2 reduction, or increase the likelihood of degradation via Birch reduction. Exciplex geometries are necessary to understand photophysical behavior and probe degradation pathways but are challenging to calculate. We establish a detailed computational protocol for calculation, verification, and characterization of exciplexes. Using fluorescence spectroscopy, we first demonstrate the formation of exciplexes between excited state oligo-(p-phenylene) (OPP), shown to successfully carry out CO2 reduction, and triethylamine (TEA). Time-dependent density functional theory (TDDFT) is employed to optimize the geometries of these exciplexes, which are validated by comparing both emission energies and their solvatochromism with experiment. Excited state energy decomposition analysis confirms the predominant role played by charge transfer interactions in the red-shift of emissions relative to the isolated excited state OPP*. We find that although the exciplex emission frequency depends strongly on solvent dielectric, the extent of charge separation in an exciplex does not. Our results also suggest that the formation of solvent-separated ionic radical states upon complete electron transfer competes with exciplex formation in higher dielectric solvents, thereby leading to reduced exciplex emission intensities in fluorescence experiments.

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