Facile control of thermo-responsive wettability through an all-electrostatic self-assembling process
- Authors
- Kwak, D (Kwak, Donghoon); Han, JT (Han, Joong Tark); Lee, JH (Lee, Ji Hwang); Lim, HS (Lim, Ho Sun); Lee, DH (Lee, Dae Ho); Cho, K (Cho, Kilwon)
- Issue Date
- Oct-2008
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Layer-by-layer assembly; Poly(N-isopropylacrylamide) copolymer; Thermo-responsive wettability
- Citation
- SURFACE SCIENCE, v.602, no.19, pp 3100 - 3105
- Pages
- 6
- Journal Title
- SURFACE SCIENCE
- Volume
- 602
- Number
- 19
- Start Page
- 3100
- End Page
- 3105
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/148162
- DOI
- 10.1016/j.susc.2008.07.044
- ISSN
- 0039-6028
1879-2758
- Abstract
- We describe the facile fabrication of a thermo-responsive wetting surface through an electrostatic assembly process and the use of thermo-responsive polyelectrolyte copolymers. The organic-inorganic nano-structured films were prepared through the layer-by-layer assembly of negatively charged silica nanoparticles (11 nm) and positively charged poly(allylamine hydrochloride) (PAH). The thermo-responsive polyelectrolyte copolymer, poly(allylamine hydrochloride)-g-poly(N-isopropylacrylamide) (PAH-g-PNIPAAm), was synthesized by grafting a carboxylic end group of PNIPAAm on to the PAH. The nanostructured surfaces modified with PAH-g-PNIPAAm exhibit enhanced thermal switching of surface wettability. Our approach provides a versatile strategy for control over the thermo-responsive wettability of substrates with complex structures for various applications such as sensors, microfluidics, etc. (C) 2008 Elsevier B.V. All rights reserved.
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