Self-assembly in surfactant-based liquid mixtures: Bis(2-ethylhexyl)phosphoric acid/bis(2-ethylhexyl)amine systems

被引：48

作者：

Calandra, Pietro ^{[1
]}

Ruggirello, Angela ^{[2
]}

Mele, Andrea ^{[3
]}

Liveri, Vincenzo Turco ^{[2
]}

机构：

[1] CNR, IPCF, Sez Messina, I-98158 Messina, Italy

[2] Univ Palermo, Dipartimento Chim Fis, I-90128 Palermo, Italy

[3] Giulio Natta Politecn Milano, Dipartimento Chim Mat & Ing Chim, I-20131 Milan, Italy

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2010年 / 348卷 / 01期

关键词：

Surfactants; Conducting materials; Self-assembly; Liquid mixtures; REVERSED MICELLES; PHOSPHATE; ACID; EXTRACTION; COMPLEXES; CRYSTALS; SPECTRA; AMINES; SALTS; WATER;

D O I：

10.1016/j.jcis.2010.04.031

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：

Surfactant-based liquid mixtures constitute an interesting class of nanostructured materials with promising potential in specialized applications. Here, structural and conductometric properties of liquid mixtures composed of bis(2-ethylhexyl)amine (BEEA) and bis(2-ethylhexyl)phosphoric acid (HDEHP) have been thoroughly investigated with the aim to correlate structural features with system charge transport capability. The evolution of self-assembled local nanostructures with system composition has been investigated by FT-IR and XRD while the conductometric properties were probed by conventional AC complex impedance. Both pure components exhibit nano-segregation due to their amphiphilic nature but with only very low proton conductivities. However their mixtures, characterized by local organization of polar and apolar domains driven by acid-base interactions between HDEHP PO(4)H and BEEA NH groups, show enhanced structural order and proton conductivity. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：183 / 188

页数：6

共 27 条

[1] STUDY OF THE AGGREGATION BEHAVIOR OF DI(2-ETHYL HEXYL)PHOSPHORIC ACID IN HEPTANE IN THE PRESENCE OF WATER [J].