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Ordering, Interaction, and Reactivity of the Low‐Lying nπ* and ππ* Excited Triplet States of Acetophenone Derivatives
Author(s) -
Yabumoto Sohshi,
Shigeto Shinsuke,
Lee YuanPern,
Hamaguchi Hiroo
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201004571
Subject(s) - acetophenone , lying , excited state , reactivity (psychology) , population , thermal , spectroscopy , chemistry , photochemistry , physics , atomic physics , quantum mechanics , thermodynamics , organic chemistry , sociology , demography , catalysis , medicine , alternative medicine , pathology , radiology
Lay low for a while : The low‐lying nπ* and ππ* triplet states of substituted acetophenones have been directly observed by time‐resolved near‐infrared spectroscopy. The apparent reactivities of the ππ* T 1 states of acetophenones have been shown to arise from the thermal population of the higher nπ* T 2 states. Thermal equilibrium also occurs between the T 1 and T 2 states of the acetophenones.