In:
Scientific Reports, Springer Science and Business Media LLC, Vol. 5, No. 1 ( 2015-11-06)
Abstract:
A relay strategy has been proposed to design a new Hg 2+ chemodosimeter ( TPE-S ), by coupling Hg 2+ -promoted deprotection reaction with ketone-enol isomerization, realizing the multistage amplifying effect. Changes in both of color and fluorescence could occur immediately and TPE-S displayed high selectivity for Hg 2+ , other metal ions (Ag + , Fe 3+ , Cu 2+ , Pb 2+ , Co 2+ , Cr 3+ , Al 3+ , Cd 2+ , Mg 2+ , Mn 2+ , Ba 2+ , Fe 2+ , Ca 2+ , Ni 2+ , Zn 2+ , Li + , K + and Na + ) gave nearly no disturbance to the sensing process. When fabricated as test strips similar to pH-indicator papers, immediate color change from colorless to purple could be visually observed by naked-eyes without the aid of any additional equipment, with the detection limit as low as 1 × 10 −7 M (Hg 2+ in aqueous solution). Due to its easy synthesis, high selectivity and sensitivity, combined with the portable test strips, TPE-S could be developed as a convenient and cost-effective tool for the detection of Hg 2+ in on-site inspections.
Type of Medium:
Online Resource
ISSN:
2045-2322
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2015
detail.hit.zdb_id:
2615211-3
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