Issue 25, 2012
From the journal:

Soft Matter

An underwater pH-responsive superoleophobic surface with reversibly switchable oil-adhesion†

Qunfeng Cheng,‡a   Mingzhu Li,‡b   Fu Yang,‡c   Mingjie Liu,b   Lin Li,c   Shutao Wang*b  and  Lei Jiangab  

* Corresponding authors

a Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, BeiHang University, Beijing 100191, China

b Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
E-mail: stwang@iccas.ac.cn
Fax: (+86) 10-8262-1396

c College of Chemistry, Beijing Normal University, Beijing 100875, China

Abstract

An underwater pH-responsive superoleophobic surface successfully demonstrated a reversible switch of oil-adhesion on a nanostructured poly(acrylic acid) (PAA) surface by changing the environmental pH values. At low pH, intramolecular hydrogen bonding of PAA is formed, and results in high oil-adhesion. As for high pH, the oil droplets can easily roll off due to the intermolecular hydrogen bonding between PAA and surrounding water.

Graphical abstract: An underwater pH-responsive superoleophobic surface with reversibly switchable oil-adhesion

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Article information

DOI
https://doi.org/10.1039/C2SM25421B
Article type
Paper
Submitted
23 Feb 2012
Accepted
19 Apr 2012
First published
21 May 2012

Soft Matter, 2012,8, 6740-6743

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An underwater pH-responsive superoleophobic surface with reversibly switchable oil-adhesion

Q. Cheng, M. Li, F. Yang, M. Liu, L. Li, S. Wang and L. Jiang, Soft Matter, 2012, 8, 6740 DOI: 10.1039/C2SM25421B

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