Issue 3, 2003
From the journal:

Photochemical & Photobiological Sciences

Microenvironmental effects in the excited state properties of p-dimethylaminobenzonitrile complexed to α- and β-cyclodextrin†

Sandra Monti,*a   Pietro Bortolus,a   Francesco Manoli,a   Giancarlo Marconi,a   Gottfried Grabner,*b   Gottfried Köhler,b   Bernd Mayer,b   Wojciech Boszczykc  and  Krystyna Rotkiewiczcd  

* Corresponding authors

a Istituto per la Sintesi Organica e la Fotoreattività del CNR, I-40129 Bologna, Italia
E-mail: monti@isof.cnr.it

b Institut für Theoretische Chemie und Molekulare Strukturbiologie, Universität Wien, A-1030 Wien, Austria

c Institute of Chemistry, Swietokrzyska Academy, PL-25020 Kielce, Poland

d Institute of Physical Chemistry, Polish Academy of Sciences, PL-01-224 Warszawa, Poland

Abstract

The steady state and time resolved fluorescence and the triplet–triplet absorption of p-dimethylaminobenzonitrile (DMABN) in presence of α- and β-cyclodextrin (CD) were investigated at various host and guest concentrations and temperatures. The formation of 1 : 1 and 1 : 2 DMABN : α-CD and 1 : 1 and 2 : 2 complexes DMABN : β-CD complexes was ascertained by applying global analysis methods. The “pure” fluorescence spectra as well as the emission quantum yields and lifetimes and the triplet properties of the various associates were determined. The role of environmental features in the radiative and non-radiative deactivation of the LE and ICT excited states of the complexed DMABN was elucidated.

Graphical abstract: Microenvironmental effects in the excited state properties of p-dimethylaminobenzonitrile complexed to α- and β-cyclodextrin

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Article information

DOI
https://doi.org/10.1039/B211245K
Article type
Paper
Submitted
18 Nov 2002
Accepted
23 Dec 2002
First published
10 Feb 2003

Photochem. Photobiol. Sci., 2003,2, 203-211

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Microenvironmental effects in the excited state properties of p-dimethylaminobenzonitrile complexed to α- and β-cyclodextrin

S. Monti, P. Bortolus, F. Manoli, G. Marconi, G. Grabner, G. Köhler, B. Mayer, W. Boszczyk and K. Rotkiewicz, Photochem. Photobiol. Sci., 2003, 2, 203 DOI: 10.1039/B211245K

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