Long-lived phosphorescence of aqueous solutions of beta-cyclodextrin complexes with naphthalene and its derivatives at room temperature

Authors
Nazarov, VB Vershinnikova, TG Alfimov, MV
Citation
Vb. Nazarov et al., Long-lived phosphorescence of aqueous solutions of beta-cyclodextrin complexes with naphthalene and its derivatives at room temperature, RUSS CHEM B, 48(10), 1999, pp. 1998-2000
Citations number
12
Categorie Soggetti
Chemistry
Journal title
RUSSIAN CHEMICAL BULLETIN
ISSN journal
10665285 → ACNP
Volume
48
Issue
10
Year of publication
1999
Pages
1998 - 2000
Database
ISI
SICI code
1066-5285(199910)48:10<1998:LPOASO>2.0.ZU;2-G
Abstract
A long-lived phosphorescence at room temperature (lifetime > 1 s) of aqueou s solutions of beta-cyclodextrin complexes with naphthalene and its derivat ives was found. The phosphorescence is observed for aggregated complexes th at form in water a light-scattering suspension, and its low intensity is du e to predomination of 2 : 2 complexes with efficient excimer fluorescence. Complexes containing isolated aromatic molecules are assumed to be the cent ers of fluorescence.