The interaction between morin and CTAB aggregates

被引:50
作者
Liu, WY
Guo, R [1 ]
机构
[1] Nanjing Univ, Dept Chem, Key Lab Mesoscop Chem, Minist Educ, Nanjing 210093, Peoples R China
[2] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Peoples R China
关键词
CTAB micelle; morin; ab initio quantum calculations; binding constant; micropolarity; cyclic voltammetry;
D O I
10.1016/j.jcis.2005.04.061
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Electronic absorption spectra, fluorescence emission spectra, ATR-FTIR spectra, cyclic voltammetric measurements, and ab initio quantum calculation are used to study the properties of morin in CTAB micelles with different microstructures and microenvironments and to gain information about the binding of morin with CTAB micelles. Morin can be located in the CTAB micelle with its phenyl group (deviating with 38.98 degrees from the planarity) only in the form of the monomer, which leads to increase of the planarity and extension of the pi conjugation of the whole molecule. The embedding of two hydroxyl groups on the phenyl into a more hydrophobic microenvironment makes the oxidation peak of morin move to a higher potential with a decreased peak current. The binding of morin with CTAB micelles is a spontaneous (Delta G < 0) and endothermic process (Delta H > 0), and the hydrophobic and electrostatic force is the main driving force for its solubilization. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:564 / 573
页数:10
相关论文
共 27 条
[1]   IDENTIFICATION AND DETERMINATION OF PHENOLIC CONSTITUENTS IN NATURAL BEVERAGES AND PLANT-EXTRACTS BY MEANS OF A COULOMETRIC ELECTRODE ARRAY SYSTEM [J].
ACHILLI, G ;
CELLERINO, GP ;
GAMACHE, PH ;
DERIL, GVM .
JOURNAL OF CHROMATOGRAPHY, 1993, 632 (1-2) :111-117
[2]   Flavonoids - Chemistry, metabolism, cardioprotective effects, and dietary sources [J].
Cook, NC ;
Samman, S .
JOURNAL OF NUTRITIONAL BIOCHEMISTRY, 1996, 7 (02) :66-76
[3]   Photophysical induction of dual fluorescence of quercetin and related hydroxyflavones upon intermolecular H-bonding to solvent matrix [J].
Falkovskaia, E ;
Sengupta, PK ;
Kasha, M .
CHEMICAL PHYSICS LETTERS, 1998, 297 (1-2) :109-114
[4]   Morin sulfates/glucuronides exert anti-inflammatory activity on activated macrophages and decreased the incidence of septic shock [J].
Fang, SH ;
Hou, YC ;
Chang, WC ;
Hsiu, SL ;
Chao, PDL ;
Chiang, BL .
LIFE SCIENCES, 2003, 74 (06) :743-756
[5]   Review of the biology of quercetin and related bioflavonoids [J].
Formica, JV ;
Regelson, W .
FOOD AND CHEMICAL TOXICOLOGY, 1995, 33 (12) :1061-1080
[6]   ANALYSIS OF PHENOLIC AND FLAVONOID COMPOUNDS IN JUICE BEVERAGES USING HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY WITH COULOMETRIC ARRAY DETECTION [J].
GAMACHE, P ;
RYAN, E ;
ACWORTH, IN .
JOURNAL OF CHROMATOGRAPHY, 1993, 635 (01) :143-150
[7]  
GUARDIA MDL, 1991, MICROCHEM J, V44, P193
[8]   Effect of VC on the phase behavior of surfactant system [J].
Guo, R ;
Yu, WL ;
Zhang, XH .
ACTA PHYSICO-CHIMICA SINICA, 2000, 16 (04) :325-330
[9]   Interaction of malachite green with CTAB micelles [J].
Guo, R ;
Liu, WY ;
Fan, GK .
ACTA PHYSICO-CHIMICA SINICA, 2001, 17 (12) :1062-1066
[10]   Advances in flavonoid research since 1992 [J].
Harborne, JB ;
Williams, CA .
PHYTOCHEMISTRY, 2000, 55 (06) :481-504