title: A new selective colorimetric and fluorescent sensor for Hg(2+) and Cu(2+) based on a thiourea featuring a pyrene unit.
abstract: A new artificial receptor 1 was developed, and its chromogenic and fluorogenic behaviors toward various metal ions were investigated. Receptor 1 shows exclusively responses toward Hg(2+) and Cu(2+) ions. It selectively senses Hg(2+) and Cu(2+) ions through two different color changes in aqueous solution (DMSO/H(2)O=4/1) and also distinguishes them from other metal ions. In addition, receptor 1 also exhibits pronounced enhancements of the fluorescence, which can visually be discernible by an orchid fluorescence in the presence of Hg(2+) ions and a strong blue fluorescence in the presence of Cu(2+) ions.
authors.affiliation: Department of Applied Chemistry, Providence University, Sha-Lu, Taichung Hsien, Taiwan.
authors.forename: Wei-Chi
authors.initials: WC
authors.lastname: Lin
authors.forename: Chen-Yu
authors.initials: CY
authors.lastname: Wu
authors.forename: Zhao-Hong
authors.initials: ZH
authors.lastname: Liu
authors.forename: Chi-Yung
authors.initials: CY
authors.lastname: Lin
authors.forename: Yao-Pin
authors.initials: YP
authors.lastname: Yen
mesh_terms: D003124:Colorimetry / Q000379:methods*; D004396:Coloring Agents / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D004305:Dose-Response Relationship, Drug; D005456:Fluorescent Dyes / Q000494:pharmacology; D007477:Ions; D009682:Magnetic Resonance Spectroscopy; D008628:Mercury / Q000737:chemistry*; D008956:Models, Chemical; D011721:Pyrenes / Q000737:chemistry; D013050:Spectrometry, Fluorescence / Q000379:methods; D013053:Spectrophotometry / Q000379:methods; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013890:Thiourea / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D004396:Coloring Agents; D005456:Fluorescent Dyes; D007477:Ions; D011721:Pyrenes; D003300:Copper; D008628:Mercury; D013890:Thiourea