Bell‐Shaped Superhydrophilic–Superhydrophobic–Superhydrophilic Double Transformation on a pH‐Responsive Smart Surface | Zendy

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

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Bell‐Shaped Superhydrophilic–Superhydrophobic–Superhydrophilic Double Transformation on a pH‐Responsive Smart Surface

Author(s) -

Cheng Mengjiao,

Liu Qian,

Ju Guannan,

Zhang Yajun,

Jiang Lei,

Shi Feng

Publication year - 2014

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201302187

Subject(s) - superhydrophilicity , wetting , monolayer , materials science , nanotechnology , chemical engineering , composite material , engineering

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(CH 2 ) 11 CH 3 , HS(CH 2 ) 10 COOH, and HS(CH 2 ) 11 NH 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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