Interaction of 4-hydroxybiphenyl with cyclodextrins: Effect of complex structure on spectroscopic and photophysical properties (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Interaction of 4-hydroxybiphenyl with cyclodextrins: Effect of complex structure on spectroscopic and photophysical properties (Articolo in rivista) (literal)

Anno

• 2000-01-01T00:00:00+01:00 (literal)

Alternative label

• Bortolus, P.a and Marconi, G. a and Monti, S.a and Mayer, B.b and Kohler, G.b and Grabner, G.b (2000)
  Interaction of 4-hydroxybiphenyl with cyclodextrins: Effect of complex structure on spectroscopic and photophysical properties
  in Chemistry (Weinh., Print)
  (literal)

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• Bortolus, P.a and Marconi, G. a and Monti, S.a and Mayer, B.b and Kohler, G.b and Grabner, G.b (literal)

Pagina inizio

• 1578 (literal)

Pagina fine

• 1591 (literal)

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• 62 WILEY-V C H VERLAG GMBH 312WW (literal)

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• 6 (literal)

Rivista

• Chemistry (Rivista)

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• 9 (literal)

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• a) Istituto di Fotochimica e Radiazioni d'Alta Energia CNR, Bologna, Italy b) Institut fuer Theoretische Chemie und Strahlenchemie, University of Vienna, Austria (literal)

Titolo

• Interaction of 4-hydroxybiphenyl with cyclodextrins: Effect of complex structure on spectroscopic and photophysical properties (literal)

Abstract

• The structures, spectroscopic and photophysical properties of the inclusion complexes between 4-OH-biphenyl and cyclodextrins (CD) in water were studied theoretically and experimentally. The complex structures were predicted using a dynamic Monte Carlo procedure including solvation effects and analyzed via computed and experimentally determined circular dichroism. The interpretation of the induced circular dichroism spectra indicated the formation of stable 2:2 complexes between the probe and alpha-CD, while 1:1 structures account for the circular dichroism induced by beta- and gamma-CD. Fluorescence emission quantum yields and lifetimes, measured as a function of the CD concentration, confirmed the formation of this higher order complex with alpha-CD. Prototropic equilibration in the singlet excited state was found to be depressed in 2:2 complexes due to the hydrophobic environment of the OH groups, while it remained unperturbed in 1:1 complexes, where the substituent is exposed to the aqueous environ-ment. Triplet-triplet absorption and triplet quenching data supported this interpretation. The photophysical properties of both the 1:1 and the 2:2 complexes are characterized by a significant reduction of the nonradiative decay rates. (literal)

Prodotto di

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)

Autore CNR

• SANDRA MONTI (Persona)
• GIANCARLO MARCONI (Unità di personale interno)
• PIETRO BORTOLUS (Unità di personale interno)

Incoming links:

Prodotto

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)

Autore CNR di

• GIANCARLO MARCONI (Unità di personale interno)
• SANDRA MONTI (Persona)
• PIETRO BORTOLUS (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Chemistry (Rivista)