Nano Archive

Self-assembly and film stability of a micelle of a single-chain quaternary ammonium amphiphile containing azobenzene on mica

Hou, Xueliang and Sun, Lu and Zou, Bo and Wu, Lixin (2004) Self-assembly and film stability of a micelle of a single-chain quaternary ammonium amphiphile containing azobenzene on mica. Materials Letters, 58 (3-4). 369 - 372.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

The self-assembling behavior of a single-chain quaternary ammonium amphiphile bearing azobenzene (C12AzoC6N+) on freshly cleaved mica sheet has been investigated by atomic force microscopy (AFM) method. Confocal microscopic Raman spectra confirm the adsorption of the self-assembled monolayer structure. Ex-situ AFM reveals that C12AzoC6N+ forms branch-like stripes indicating the fusion and reorganization of the micelles during drying in air as the in-situ AFM has revealed that surfactant forms spherical micelles on the mica surface. The nano-sized surface structure is strongly dependent on the change of molecular structure, which resulted from photo-induced isomerization. The nano-sized stripe is quite stable even being annealed at 90 °C for 4 h.

Item Type:Article
Uncontrolled Keywords:Branched stripe; Micelle; Atomic force microscopy; Thin films; Amphiphile; Self-assembling
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:6899
Deposited By:SPI
Deposited On:20 Aug 2009 12:40
Last Modified:20 Aug 2009 12:40

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