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Molecules 2016, 21(1), 107; doi:10.3390/molecules21010107

An Amidochlorin-Based Colorimetric Fluorescent Probe for Selective Cu2+ Detection

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin 150025, China
These authors contributed equally to this work.
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Authors to whom correspondence should be addressed.
Academic Editors: Scott Reed and Marino Resendiz
Received: 5 December 2015 / Revised: 13 January 2016 / Accepted: 14 January 2016 / Published: 18 January 2016
(This article belongs to the Special Issue Photoactive Molecules)
View Full-Text   |   Download PDF [2423 KB, uploaded 18 January 2016]   |  

Abstract

The design and synthesis of selective and sensitive chemosensors for the quantification of environmentally and biologically important ionic species has attracted widespread attention. Amidochlorin p6 (ACP); an effective colorimetric and fluorescent probe for copper ions (Cu2+) in aqueous solution derived from methyl pheophorbide-a (MPa) was designed and synthesized. A remarkable color change from pale yellow to blue was easily observed by the naked eye upon addition of Cu2+; and a fluorescence quenching was also determined. The research of fluorescent quenching of ACP-Cu2+ complexation showed the detection limit was 7.5 × 10−8 mol/L; which suggested that ACP can act as a high sensitive probe for Cu2+ and can be used to quantitatively detect low levels of Cu2+ in aqueous solution. In aqueous solution the probe exhibits excellent selectivity and sensitivity toward Cu2+ ions over other metal ions (M = Zn2+; Ni2+; Ba2+; Ag+; Co2+; Na+; K+; Mg2+; Cd2+; Pb2+; Mn2+; Fe3+; and Ca2+). The obvious change from pale yellow to blue upon the addition of Cu2+ could make it a suitable “naked eye” indicator for Cu2+. View Full-Text
Keywords: fluorescent probe; copper ions; chlorophyll fluorescent probe; copper ions; chlorophyll
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Li, W.; Zhu, G.; Li, J.; Wang, Z.; Jin, Y. An Amidochlorin-Based Colorimetric Fluorescent Probe for Selective Cu2+ Detection. Molecules 2016, 21, 107.

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