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The Crucial Role of the S 1 /T 2 /T 1 Intersection in the Relaxation Dynamics of Aromatic Carbonyl Compounds upon n→π* Excitation
Author(s) -
Fang WeiHai,
Phillips David Lee
Publication year - 2002
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/1439-7641(20021018)3:10<889::aid-cphc889>3.0.co;2-u
Subject(s) - excitation , relaxation (psychology) , aromaticity , chemistry , intersection (aeronautics) , chemical physics , computational chemistry , dynamics (music) , photochemistry , organic chemistry , molecule , physics , quantum mechanics , acoustics , engineering , aerospace engineering , psychology , social psychology
Where shall we three meet again? A minimum energy crossing point among the three potential energy surfaces (S 1 , T 1 , and T 2 ) is found in a wide variety of aromatic ketones with a common structure. This new type of crossing point holds the key to understanding much of the relaxation dynamics and mechanistic photochemistry (n→π* excitation) of aromatic carbonyl compounds.