Role of the spacer stereochemistry on the aggregation properties of cationic gemini surfactants

被引：41

作者：

Bello, Cristiano

Bombelli, Cecilia

Borocci, Stefano

di Profio, Pietro

Mancini, Giovanna

机构：

[1] Univ Perugia, Ctr Eccellenza Mat Innovat Nanostrutturali Applic, I-06123 Perugia, Italy

[2] Univ Perugia, Dipartimento Chim, I-06123 Perugia, Italy

[3] Univ Roma La Sapienza, CNR, Ist Metodol Chim, Sez Meccanismi Reac, I-00185 Rome, Italy

[4] Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy

[5] Univ Tuscia, Dipartimento Sci Ambientali, I-01100 Viterbo, Italy

来源：

LANGMUIR | 2006年 / 22卷 / 22期

关键词：

D O I：

10.1021/la061230f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The preparation and characterization of three stereoisomeric cationic gemini surfactants, 2,3-dimethoxy-1,4-bis(N-hexadecyl-N, N-dimethylammonio) butane dibromide, are described. The aggregation properties have been studied by fluorescence, electrical conductivity, and quasi-elastic light scattering. A conformational study of the surfactant headgroups has been performed by molecular mechanics calculations to investigate the effect of the stereogenic centers on the surfactant molecular shape and therefore on the different organizations of the monomers in the aggregates. Results show that the stereochemistry of the spacer strongly influences the aggregation behavior of the diasteromeric gemini in water.

引用

页码：9333 / 9338

页数：6

共 34 条

[1]

ANANTHAPADMANABHAN KP, 1985, LANGMUIR, V1, P352, DOI 10.1021/la00063a015

[2] Developing a force field for simulation of poly(ethylene oxide) based upon ab initio calculations of 1,2-dimethoxyethane [J].