Template-directed patterning using phase-separated Langmuir-Blodgett films

Langmuir : the ACS Journal of Surfaces and Colloids
Mutsuyoshi MatsumotoNorio Yoshino

Abstract

The structures of the mixed Langmuir-Blodgett (LB) films of conventional amphiphiles (CAs) and amphiphilic silane-coupling agents (SCAs) were investigated using IR spectroscopy, atomic force microscopy, and friction force microscopy. By using CAs having hydrogenated alkyl chains and SCAs having perfluorinated alkyl chains, phase-separated structures were formed with domains consisting of CAs surrounded by SCAs. The size and shape of the domains depended strongly on the mixed components, the mixing ratios, and the subphase temperature. In particular, usage of a CA having hydrogenated and perfluorinated portions in the hydrophobic group as one of the components led to the formation of nanothreads. When the phase-separated mixed LB films were heated, SCAs formed covalent bonds with the substrates having silanol groups whereas CAs did not have such ability. Rinsing the heat-treated LB films with ethanol selectively removed CAs with the SCA regions intact, resulting in the fabrication of templates. The structures of the templates reflected those of the original phase-separated LB films. LB transfer of amphiphiles on the templates led to the confinement of the amphiphiles in regions with the size and shape delineated by the templates...Continue Reading

References

Feb 24, 2001·Advances in Colloid and Interface Science·M MatsumotoH Tachibana

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Citations

Mar 28, 2007·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Mutsuyoshi Matsumoto
Nov 23, 2006·Colloids and Surfaces. B, Biointerfaces·Tatsuya TsukagoshiNorio Yoshino
Nov 10, 2020·Chemical Communications : Chem Comm·Dan-Dan TaoYun-Bao Jiang
Nov 14, 2008·The Journal of Physical Chemistry. B·Hideto KimuraMutsuyoshi Matsumoto
Jul 24, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Satoshi WatanabeMutsuyoshi Matsumoto
Jul 1, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Shatha E QaqishMatthew F Paige

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