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Fluorescence quenching of para ‐substituted styrenes by tetramethylethylene. Correlation analysis of the quenching coefficient K SV and the quenching rate constant k q by the dual‐parameter equation with polar and spin‐delocalization substituent constants
Author(s) -
Zhang YuHuang,
Jiang Bin,
Jiang XiKui
Publication year - 1997
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19970150503
Subject(s) - chemistry , quenching (fluorescence) , fluorescence , reaction rate constant , excited state , analytical chemistry (journal) , constant (computer programming) , substituent , photochemistry , atomic physics , kinetics , stereochemistry , organic chemistry , physics , quantum mechanics , computer science , programming language
The fluorescence quenching coefficient ( K SV ) and the quenching rate constant k q of ten para ‐substituted styrenes (1‐Ys) have been measured and correlation‐analyzed by both the dual‐parameter equation (Eq. 1) with (ρ x σ x + ρ · σ · ) and the single‐parameter equation (Eq. 2) with ρ x σ x . Excellent results have been obtained for the correlation of K SV against (ρ x σ mb + ρ · σ · JJ ) or (ρ x σ + + ρ · σ · JJ ). Our results suggest that, possibly, there might be no need to use excited‐state substituent constant for the fluorescence quenching process of excited states of styrenes.