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Titolo:
STEADY-STATE FLUORESCENCE STUDIES OF THE COMPLEXES BETWEEN PYRENE ANDPER-6-O-TERT-BUTYLDIMETHYLSILYL ALPHA-CYCLODEXTRINS, BETA-CYCLODEXTRINS AND GAMMA-CYCLODEXTRINS
Autore:
EDDAOUDI M; COLEMAN AW; PROGNON P; LOPEZMAHIA P;
Indirizzi:
INST BIOL CHEM PROT,CNRS,UPR 412,7 PASSAGE VERCORS F-69367 LYON 07 FRANCE INST BIOL CHEM PROT,CNRS,UPR 412 F-69367 LYON 07 FRANCE FAC PHARM CHATENAY MALABRY,LAB CHIM ANALYT 2 F-92296 CHATENAY MALABRYFRANCE FAC CIENCIAS,LAB ANAL QUIM LA CORUNA SPAIN
Titolo Testata:
Perkin transactions. 2
fascicolo: 5, , anno: 1996,
pagine: 955 - 959
SICI:
0300-9580(1996):5<955:SFSOTC>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASE LIQUID-CHROMATOGRAPHY; INCLUSION COMPLEXES; FORMATION-CONSTANTS; RETENTION BEHAVIOR; AQUEOUS-SOLUTION; SYSTEMS; ALCOHOLS; ASSOCIATION; ANTHRACENE; ARENES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
M. Eddaoudi et al., "STEADY-STATE FLUORESCENCE STUDIES OF THE COMPLEXES BETWEEN PYRENE ANDPER-6-O-TERT-BUTYLDIMETHYLSILYL ALPHA-CYCLODEXTRINS, BETA-CYCLODEXTRINS AND GAMMA-CYCLODEXTRINS", Perkin transactions. 2, (5), 1996, pp. 955-959

Abstract

The complexation of pyrene by alpha-, beta- and gamma-cyclodextrins (CDs), persubstituted at the 6 position by tert-butyldimethylsilyl groups, has been investigated using steady state fluorescence spectroscopy,The alpha-CD derivative does not, as would be expected from steric considerations, form complexes. The beta- and gamma-CD derivatives form 1:1 host-guest complexes which show high association constants in 90:10 H2O-DMF solution [i.e. beta-CD(SiR)(7), 4.85 x 10(5) M(-1); gamma-CD(SiR)(8), 4.91 x 10(5) M(-1)]. Analysis of the polarity of the microenvironment by means of the I/III peak ratios shows a more polar cavity in the case of gamma-CD(SiR)(8). The concentration dependence of I/IIIsuggests that a weak supramolecular complex gamma-CD(SiR)(8)-pyrene-n. DMF, may exist.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/04/20 alle ore 04:02:22