New Urea-Based Surfactants Derived from α,ω-Amino Acids

被引：33

作者：

Faustino, Celia M. C. ^{[1
]}

Calado, Antonio R. T. ^{[1
]}

Garcia-Rio, Luis ^{[2
]}

机构：

[1] Univ Lisbon, Fac Pharm, IMedUL, P-1649003 Lisbon, Portugal

[2] Univ Santiago de Compostela, Fac Chem, Dept Phys Chem, Santiago De Compostela 15782, Spain

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2009年 / 113卷 / 04期

关键词：

SOLUBLE EPOXIDE HYDROLASE; QUATERNIZATION REACTION; AMINO-ACIDS; BEHAVIOR;

D O I：

10.1021/jp807396k

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：

New anionic urea-based surfactants derived from alpha,omega-amino acids and in particular from beta-alanine were synthesized and their solution properties characterized by electrical conductivity, equilibrium surface tension, and steady-state fluorescence spectroscopy techniques. Double-chain surfactants and the single-chain surfactant containing a sulfate head group exhibited the lowest critical micelle concentration (cmc) values and superior efficiency in lowering surface tension. All surfactants promoted adsorption relative to micellization, and micellar parameters were sensitive to the hydrophobicity of the amino acid residue. The polarity of the interfacial region, measured with the solvatochromic probe E-T(30) (Reichardt's betaine dye), was similar to sodium dodecyl sulfate (SDS) micelles.

引用

页码：977 / 982

页数：6

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