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Titolo:
Molecular recognition study on a supramolecular system. Part 21. Inclusioncomplexation thermodynamics of aliphatic alcohols by organoselenium modified beta-cyclodextrins
Autore:
Liu, Y; Li, B; Wada, T; Inoue, Y;
Indirizzi:
Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China Nankai Univ Tianjin Peoples R China 300071 anjin 300071, Peoples R China Osaka Univ, Dept Mol Chem, Inoue Photochirogenesis Project ERATO, Suita, Osaka 565, Japan Osaka Univ Suita Osaka Japan 565 s Project ERATO, Suita, Osaka 565, Japan
Titolo Testata:
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
fascicolo: 3, volume: 36, anno: 2000,
pagine: 311 - 325
SICI:
1388-3127(200003)36:3<311:MRSOAS>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
PREASSOCIATING ALPHA-NUCLEOPHILES; ENTHALPY-ENTROPY COMPENSATION; CALORIMETRIC TITRATION; GAMMA-CYCLODEXTRINS; ARTIFICIAL ENZYMES; BINDING-SITES; DERIVATIVES; ASSOCIATION; REACTIVITY;
Keywords:
organoselenium cyclodextrin; aliphatic alcohols; inclusion complexation; thermodynamics;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
31
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 et al., "Molecular recognition study on a supramolecular system. Part 21. Inclusioncomplexation thermodynamics of aliphatic alcohols by organoselenium modified beta-cyclodextrins", J INCL P MA, 36(3), 2000, pp. 311-325

Abstract

The spectrophotometric titrations have been performed at 25-40 degrees C in aqueous solution to give the complex stability constants and the thermodynamic parameters for the stoichiometric 1 : 1 inclusion complexation of various aliphatic alcohols with mono[6-(phenylseleno)-6-deoxy]-beta-cyclodextrin (2), mono[6-(o-, m-, p-tolylseleno)-6-deoxy]-beta-cyclodextrin (3-5), mono[6-(p-chloro-phenyl-seleno)-6-deoxy]-beta-cyclodextrin (6), mono[6-(benzylseleno)-6-deoxy]-beta-cyclodextrin (7) and mono[6-(naphthaleneseleno)-6-deoxy]-beta-cyclodextrin (8). On the basis of the present and previous results, the molecular binding abilities and selectivities for guest aliphatic alcohols of the host beta-cyclodextrin derivatives (2-8) are discussed comparatively and globally from the thermodynamic point of view. The thermodynamic parameters obtained are critical functions of the size/shape of aliphaticalcohols, and the position and type of the substituent introduced to the aromatic ring of beta-cyclodextrin's sidearm, which are elucidated in terms of the conformational, electrostatic, hydrogen-bonding, and hydrophobic effects.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 21:06:44