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Published on: July 6, 2016
Hg2+ wettability and fluorescence dual-signal responsive switch based on a cysteine complex of
Xiaoyan Zhang1, Haiyang Zhao, Xianliang Cao
1Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China. lhbing@mail.ccnu.edu.cn.
Abstract:
The recognition of the mercury(II) ion (Hg(2+)) is essential because of its extreme toxicity in the environment and food. Hence we reported a novel cysteine (Cys) complex of piperidine-calix[4]arene (L) as a convenient and effective dual-signal responsive switch for Hg(2+). This switch system exhibited excellent selectivity toward Hg(2+) by fluorescence (FL), (1)H NMR spectroscopy and the atomic force microscopy (AFM). More importantly, the Hg(2+)-responsive switch had an important and potential application by water contact angle (CA) on a functional micro-nano silicon surface, including intelligent microfluidic and laboratory-on-chip devices, controllable drug delivery, and self-cleaning surfaces.
