Polymerizable Cationic Hydrotrope with Aromatic Structure：Self-assembly Behavior and Solubilization

doi:10.7517/j.issn.1674-0475.2013.04.005

Abstract

Abstract:

A series of functional polymerizable cationic hydrotropes(PCHs) with different alkyl aromatic hydrophobic structures were studied. The solubilization properties and assembly behaviors were examined by absorption and emission spectra using Nile Red dye as a multi-functional probe. The result showed that there present two concentration thresholds: the critical association concentration (CAC) (10^-1—10^-2 mol/L) and the minimal hydrotropic concentration (MHC) (>10^-1 mol/L). Both of them decrease obviously with increasing dimension of hydrophobic structure. The microenvironment polarities of aggregates determined have a relatively high value compared with that for surfactant micelles, and continuously decreased with concentration suggesting formation of loose aggregated structure whose molecular stack density increase gradually with aggregate growth. In addition, hydrotropic polymers of this type obtained by radical polymerization maintained the original hydrotropic properties with more effective solubilization ablitiy.

Key words: cationic hydrotropes, solubilization, self-assemble, polymerizable, probe technique

CLC Number:

SHEN Gui-zhi, ZHANG Yu-xi, WU Fei-peng, WANG Er-jian. Polymerizable Cationic Hydrotrope with Aromatic Structure：Self-assembly Behavior and Solubilization[J]. Imaging Science and Photochemistry, 2013, 31(4): 286-294.

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