Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Supramolecular inclusion complexes between a coumarin dye and beta-cyclodextrin, and attachment kinetics of thiolated beta-cyclodextrin to gold surface
Autore:
Velic, D; Knapp, M; Kohler, G;
Indirizzi:
Univ Vienna, Inst Theoret Chem & Struct Biol, A-1030 Vienna, Austria Univ Vienna Vienna Austria A-1030 & Struct Biol, A-1030 Vienna, Austria Comenius Univ, Bratislava 84215, Slovakia Comenius Univ Bratislava Slovakia 84215 Univ, Bratislava 84215, Slovakia
Titolo Testata:
JOURNAL OF MOLECULAR STRUCTURE
fascicolo: 1, volume: 598, anno: 2001,
pagine: 49 - 56
SICI:
0022-2860(20011031)598:1<49:SICBAC>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Keywords:
coumarin; cyclodextrin; supramolecular; SHG; Au surface;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Velic, D Univ Vienna, Inst Theoret Chem & Struct Biol, Rennweg 95B 14, A-1030 Vienna, Austria Univ Vienna Rennweg 95B 14 Vienna Austria A-1030 Vienna, Austria
Citazione:
D. Velic et al., "Supramolecular inclusion complexes between a coumarin dye and beta-cyclodextrin, and attachment kinetics of thiolated beta-cyclodextrin to gold surface", J MOL STRUC, 598(1), 2001, pp. 49-56

Abstract

Supramolecular host-guest complexes formed between dye molecules, which are absorbing and fluorescing in the visible range, and cyclodextrin molecules are studied with the aim to generate a self-assembled nanostructured. layer on a surface. Studies in solution show that an aminocoumarin dye, i.e. coumarin-6, binds strongly to beta -cyclodextrin and yields fluorescent structures. The complex formation is substantiated by 17 mn blue shift of the fluorescence spectrum. The binding of thiolated cyclodextrin, 6-monodeoxy-6-monothio-beta -cyclodextrin, to gold surface is then studied by induced change in the second-harmonic signal intensity generated from the surface. Thesaturation times of surface adsorption, as a measure of binding kinetics, are estimated for thiolated cyclodextrin as well as hexadecanethiol. The results support formation of self-assembled layers of the host molecules, which can serve as basis for the formation of supramolecular host-guest surface layers. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 06:57:32