Bell-shaped superhydrophilic-superhydrophobic-superhydrophilic double transformation on a pH-responsive smart surface

Mengjiao Cheng; Qian Liu; Guannan Ju; Yajun Zhang; Lei Jiang; Feng Shi

doi:10.1002/adma.201302187

Bell-shaped superhydrophilic-superhydrophobic-superhydrophilic double transformation on a pH-responsive smart surface

Mengjiao Cheng, Qian Liu, Guannan Ju, Yajun Zhang, Lei Jiang, Feng Shi

Research output: Contribution to journal › Article › Research › peer-review

97 Citations (Scopus)

Abstract

Superhydrophobic to neutral water droplets, superhydrophilic to acidic or basic. This double transition of surface wettability in response to a single stimulus - pH - is demonstrated for the first time. The smart surface is composed of a rough gold surface modified with a self-assembled monolayer (SAM) containing three thiols, HS(CH₂)₁₁CH₃, HS(CH₂)₁₀COOH, and HS(CH₂)₁₁NH ₂. A ternary diagram is generated that describes wettability as a function of the SAM composition and the pH of the surrounding solution.

Original language	English
Pages (from-to)	306-310
Number of pages	5
Journal	Advanced Materials
Volume	26
Issue number	2
DOIs	https://doi.org/10.1002/adma.201302187
Publication status	Published - 15 Jan 2014
Externally published	Yes

Keywords

pH-responsive surface
self-assembled monolayer
smart surface
superhydrophilicity
superhydrophobicity
ternary diagram

Access to Document

10.1002/adma.201302187

Link to publication in Scopus

Cite this

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title = "Bell-shaped superhydrophilic-superhydrophobic-superhydrophilic double transformation on a pH-responsive smart surface",

abstract = "Superhydrophobic to neutral water droplets, superhydrophilic to acidic or basic. This double transition of surface wettability in response to a single stimulus - pH - is demonstrated for the first time. The smart surface is composed of a rough gold surface modified with a self-assembled monolayer (SAM) containing three thiols, HS(CH2)11CH3, HS(CH2)10COOH, and HS(CH2)11NH 2. A ternary diagram is generated that describes wettability as a function of the SAM composition and the pH of the surrounding solution.",

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AU - Liu, Qian

AU - Ju, Guannan

AU - Zhang, Yajun

AU - Jiang, Lei

AU - Shi, Feng

PY - 2014/1/15

Y1 - 2014/1/15

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AB - Superhydrophobic to neutral water droplets, superhydrophilic to acidic or basic. This double transition of surface wettability in response to a single stimulus - pH - is demonstrated for the first time. The smart surface is composed of a rough gold surface modified with a self-assembled monolayer (SAM) containing three thiols, HS(CH2)11CH3, HS(CH2)10COOH, and HS(CH2)11NH 2. A ternary diagram is generated that describes wettability as a function of the SAM composition and the pH of the surrounding solution.

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