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Titolo:
Inclusion complexation of beta-cyclodextrin and 6-O-alpha-maltosyl- and 2-O-(2-hydroxypropyl)-beta-cyclodextrins with some fluorescent dyes
Autore:
Liu, Y; You, CC;
Indirizzi:
Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China Nankai Univ Tianjin Peoples R China 300071 anjin 300071, Peoples R China
Titolo Testata:
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
fascicolo: 1, volume: 14, anno: 2001,
pagine: 11 - 16
SICI:
0894-3230(200101)14:1<11:ICOBA6>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALIPHATIC AMINO-ACIDS; MOLECULAR RECOGNITION; SUPRAMOLECULAR SYSTEM; RHODAMINE-B; CHIRAL RECOGNITION; AQUEOUS-SOLUTION; L-TRYPTOPHAN; THERMODYNAMICS; DERIVATIVES; CHEMISTRY;
Keywords:
cyclodextrins; fluorescent dyes; inclusion complexation; molecular recognition;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Liu, Y Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China Nankai Univ Tianjin Peoples R China 300071 00071, Peoples R China
Citazione:
Y. Liu e C.C. You, "Inclusion complexation of beta-cyclodextrin and 6-O-alpha-maltosyl- and 2-O-(2-hydroxypropyl)-beta-cyclodextrins with some fluorescent dyes", J PHYS ORG, 14(1), 2001, pp. 11-16

Abstract

Spectrofluorimetric titrations were performed in aqueous phosphate buffer (pH 7.20, 0.1 mol dm(-3)) to determine the binding constants of beta -cyclodextrin (1), mono(6-O-alpha -maltosyl)-beta -cyclodextrin (2) and mono[2-O-(2-hydroxypropyl)]-beta -cyclodextrin (3) with four fluorescent dyes, ammonium 8-anilino-1-naphthalenesulfonate (ANS), sodium 2-(p-toluidino)naphthalene-6-sulfonate (TNS), Acridine Red (AR) and Rhodamine B (RhB). The fluorescence of ANS, TNS and AR were enhanced, whereas that of RhB was quenched, bythe inclusion complexation with beta -cyclodextrin hosts 1-3. It was foundthat the binding ability of the three cyclodextrin hosts generally decreases in the order 1 > 3 > 2, which indicates that the hydrophobicity of the substituent affects the original binding ability of parent beta -cyclodextrin to some extent. On the other hand, the size, shape and charge of the guest are the crucial factors which dominate the stability of the supramolecular complex formed. Copyright (C) 2000 John Wiley & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 03:48:09