Effect of water on the phosphorescence spectrum of 1-indanone at 77 K in ethanol

The phosphorescence spectrum of 1-indanone (IND) at 77 K in a mixed solvent of ethanol and water exhibits dual phosphorescence. Although the short-lived emitting species is attributed to free triplet IND of nπ* character, the long-lived emitting species is attributed to a complex (triplet IND/H 2O (...

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Veröffentlicht in:	Chemical physics letters 1992-03, Vol.190 (5), p.476-480
Hauptverfasser:	Nagamura, Toshihiko, Nakayama, Toshihiro, Hamanoue, Kumao
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic and molecular physics Chemistry Chemistry, Physical Exact sciences and technology Fluorescence and phosphorescence radiationless transitions, quenching (intersystem crossing, internal conversion) Molecular properties and interactions with photons Physical Sciences Physics Physics, Atomic, Molecular & Chemical Science & Technology
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The phosphorescence spectrum of 1-indanone (IND) at 77 K in a mixed solvent of ethanol and water exhibits dual phosphorescence. Although the short-lived emitting species is attributed to free triplet IND of nπ* character, the long-lived emitting species is attributed to a complex (triplet IND/H 2O (= 1: n) with a fixed number of n) of mixed nπ-ππ character. No emission due to the complex of IND with ethanol is observed.
ISSN:	0009-2614 1873-4448
DOI:	10.1016/0009-2614(92)85176-B