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- W3155874207 abstract "The metal-binding capabilities of the spiropyran family of molecular switches have been explored for several purposes from sensing to optical circuits. Metal-selective sensing has been of great interest for applications ranging from environmental assays to industrial quality control, but sensitive metal detection for field-based assays has been elusive. In this work, we demonstrate colorimetric copper sensing at low micromolar levels. Dimethylamine-functionalized spiropyran (SP1) was synthesized and its metal-sensing properties were investigated using UV–vis spectrophotometry. The formation of a metal complex between SP1 and Cu2+ was associated with a color change that can be observed by the naked eye as low as ≈6 μM and the limit of detection was found to be 0.11 μM via UV–vis spectrometry. Colorimetric data showed linearity of response in a physiologically relevant range (0–20 μM Cu2+) with high selectivity for Cu2+ ions over biologically and environmentally relevant metals such as Na+, K+, Mn2+, Ca2+, Zn2+, Co2+, Mg2+, Ni2+, Fe3+, Cd2+, and Pb2+. Since the color change accompanying SP1–Cu2+ complex formation could be detected at low micromolar concentrations, SP1 could be viable for field testing of trace Cu2+ ions." @default.
- W3155874207 created "2021-04-26" @default.
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- W3155874207 creator A5084360891 @default.
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- W3155874207 date "2021-04-13" @default.
- W3155874207 modified "2023-09-26" @default.
- W3155874207 title "Highly Sensitive and Selective Spiropyran-Based Sensor for Copper(II) Quantification" @default.
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