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Kinetic analysis of the abnormal fluorimetric titration behaviour of naphthylamines

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1980

Autor:innen

Hafner, Friedrich
Wörner, Jörg
Hauser, Manfred

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-46828
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https://doi.org/10.1016/0009-2614(80)85221-3
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Attribution-NonCommercial-NoDerivs 2.0 Generic

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Open Access Green

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Chemical Physics Letters. 1980, 73(1), pp. 139-144. ISSN 0009-2614. Available under: doi: 10.1016/0009-2614(80)85221-3

Zusammenfassung

The fluorimetric titration behaviour of naphthylamines is abnormal in that the sum of the reduced quantum yields of conjugated acid and base passes through a minimum. Based on fluorescence quantum yield and lifetime measurements, we explain this behaviour by two independent mechanisms: A diabatic quenching of the excited base by protons and a decrease of the excited cation's protolytic dissociation in the hyperacidic region. Though apparently independent processes, their rate constants can be shown to be related to each other by a quasi-thermodynamical equation.

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540 Chemie

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ISO 690HAFNER, Friedrich, Jörg WÖRNER, Ulrich STEINER, Manfred HAUSER, 1980. Kinetic analysis of the abnormal fluorimetric titration behaviour of naphthylamines. In: Chemical Physics Letters. 1980, 73(1), pp. 139-144. ISSN 0009-2614. Available under: doi: 10.1016/0009-2614(80)85221-3
BibTex
@article{Hafner1980Kinet-9535,
  year={1980},
  doi={10.1016/0009-2614(80)85221-3},
  title={Kinetic analysis of the abnormal fluorimetric titration behaviour of naphthylamines},
  number={1},
  volume={73},
  issn={0009-2614},
  journal={Chemical Physics Letters},
  pages={139--144},
  author={Hafner, Friedrich and Wörner, Jörg and Steiner, Ulrich and Hauser, Manfred}
}
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