1972
DOI: 10.1021/ja00766a001
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Structure-reactivity factors in the quenching of fluorescence from naphthalenes by conjugated dienes

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Cited by 95 publications
(30 citation statements)
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“…Triplet quenching of these substrates (ET = 56-62 kcal/mol, Table 1) should be close to the diffusion controlled rate (1.8 X 10'' M-I s-I in methanol (17a)) by 2,5-dimethylhexadiene (ET = 58.7 kcal/mol(17b)). However, singlet state quenching of naphthalene derivatives by this diene is also very rapid (18) and a value of 9.3 x lo9 M-' s-' has been reported previously for 6 (2). Stem-Volmer fluorescence intensity quenching plots for 6-10 are shown in Fig.…”
Section: Preparative Scale Photolysis Of the Salts 7-10supporting
confidence: 60%
“…Triplet quenching of these substrates (ET = 56-62 kcal/mol, Table 1) should be close to the diffusion controlled rate (1.8 X 10'' M-I s-I in methanol (17a)) by 2,5-dimethylhexadiene (ET = 58.7 kcal/mol(17b)). However, singlet state quenching of naphthalene derivatives by this diene is also very rapid (18) and a value of 9.3 x lo9 M-' s-' has been reported previously for 6 (2). Stem-Volmer fluorescence intensity quenching plots for 6-10 are shown in Fig.…”
Section: Preparative Scale Photolysis Of the Salts 7-10supporting
confidence: 60%
“…The observation of fluorescence quenching in such cases where there is negligible overlap of donor emission and acceptor absorption spectra (required for classical transfer) was rationalized by ~a m m o n d and co-workers (3) 'This is consistent with the definition proposed formally by J. B. Birks: "An exciplex is an electronically excited atomic or molecular complex of definite stoichiometry, which is dissociated in its electronic ground state" in ref.…”
supporting
confidence: 65%
“…Some of the processes given above may be neglected for various reasons: (i) The extent of isomer formation process [6] is not appreciable under the experimental conditions used here and may be neglected in comparison to the much more rapid processes of intersystem crossover and fluorescence (13). (ii) None of the benzene -halogenated alkane systems examined exhibited any emission other than the fluorescence of benzene molecule.…”
Section: A Singlet-state Quenchingmentioning
confidence: 99%