title: Highly selective ratiometric fluorescent Zn2+chemosensor based on diarylethene derivative with bi-8-carboxamidoquinoline unit.
abstract: An asymmetrical diarylethene (1O) with a bi-8-carboxamidoquinoline unit was synthesized. Its photochromic and fluorescence performances on stimulation with both light and metal ions showed that the diarylethene could serve as a highly selective ratiometric fluorescent chemosensor to detect Zn2+ions based on internal charge transfer and chelation-enhanced fluorescence processes. The diarylethene could selectively discriminate Zn2+from Cd2+in acetonitrile. Furthermore, Job's plots based on fluorescence titration and electrospray ionization mass spectrometry analysis showed 1 : 1 binding stoichiometry between 1O and Zn2+. The binding constant of 1O with Zn2+, estimated using the Benesi-Hildebrand method, and the limit of detection were 3.37 × 105M-1and 4.6 × 10-8mol/L, respectively. Additionally, the light and metal-responsive fluorescence behavior of 1O was used successfully to construct a molecular logic circuit with four inputs and one output. Copyright © 2016 John Wiley & Sons, Ltd.
authors.affiliation: Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China.
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.affiliation: Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China.
authors.forename: Shouzhi
authors.initials: S
authors.lastname: Pu
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods*; D005030:Ethylenes / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D015394:Molecular Structure; D011804:Quinolines / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D005030:Ethylenes; D005456:Fluorescent Dyes; D011804:Quinolines; C036216:ethylene; D015032:Zinc
keywords: carboxamidoquinoline; diarylethene; logic circuit; photochromism; ratiometric fluorescence Zn2+ sensor