title: Hg2+ wettability and fluorescence dual-signal responsive switch based on a cysteine complex of piperidine-calix[4]arene.
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.
authors.affiliation: Key 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.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Zhang
authors.forename: Haiyang
authors.initials: H
authors.lastname: Zhao
authors.forename: Xianliang
authors.initials: X
authors.lastname: Cao
authors.forename: Ningmei
authors.initials: N
authors.lastname: Feng
authors.forename: Demei
authors.initials: D
authors.lastname: Tian
authors.forename: Haibing
authors.initials: H
authors.lastname: Li
mesh_terms: D047250:Calixarenes / Q000737:chemistry*; D057930:Click Chemistry; D003545:Cysteine / Q000737:chemistry*; D005453:Fluorescence; D009682:Magnetic Resonance Spectroscopy; D008628:Mercury / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D010316:Particle Size; D010636:Phenols / Q000737:chemistry*; D010880:Piperidines / Q000737:chemistry*; D011522:Protons; D012825:Silicon / Q000737:chemistry; D013499:Surface Properties; D017155:Wettability
chemical_list: D010636:Phenols; D010880:Piperidines; D011522:Protons; C121325:calix(4)arene; D047250:Calixarenes; C032727:piperidine; D008628:Mercury; D003545:Cysteine; D012825:Silicon