Open AccessProbing Triplet State Properties of Organic Chromophores via Design and Synthesis of Os(II)-Diketonate Complexes: The Triplet State Intramolecular Charge Transfer
Author(s) -
JenKan Yu,
YiMing Cheng,
Yahui Hu,
PiTai Chou,
YaoLun Chen,
ShinWun Lee,
Yün Chi
Publication year - 2004
Publication title -
the journal of physical chemistry b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.864
H-Index - 392
eISSN - 1520-6106
pISSN - 1520-5207
DOI - 10.1021/jp0453111
Subject(s) - chromophore , phosphorescence , intramolecular force , triplet state , chemistry , solvatochromism , photochemistry , charge (physics) , dipole , fluorescence , excitation , chemical physics , solvent , stereochemistry , molecule , physics , organic chemistry , quantum mechanics
[[abstract]]We report the probe of specific triplet state properties of organic chromophores that are otherwise inaccessible in low viscous solution. The prototypical example demonstrated here is [Os(CO)(3)(Cl)(NDP)] (1) ((NDP)H = 2-naphthyl-7-dimethylanilino-1,3-propanedione), which, upon electronic excitation, undergoes intramolecular charge transfer in both S, and T, manifolds of NDP. The dipolar changes in S, and T, monitored via the solvatochromism for both fluorescence and phosphorescence were deduced to be 18.0 and 11.9 D, respectively. The appreciable difference in the dipolar change can be qualitatively rationalized by different extents of charge-transfer character between S, and T, states. The results led to the probe of other reactions in triplet manifold feasible.[[fileno]]2010329010065[[department]]化學
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