Issue 97, 2020
From the journal:

Chemical Communications

Simultaneous detection and speciation of mono- and di-valent copper ions with a dual-channel fluorescent nanoprobe†

An-Qi Zheng,a   Chen-Xi Zhao,a   Xiao-Juan Wang,a   Yang Shu ORCID logo *a  and  Jian-Hua Wang ORCID logo *a  

* Corresponding authors

a Research Center for Analytical Sciences, Department of Chemistry, Northeastern University, Box 332, Shenyang 110819, China
E-mail: shuyang@mail.neu.edu.cn, jianhuajrz@mail.neu.edu.cn
Fax: +86 24 83676698
Tel: +86-24-83688944

Abstract

Redox cyclings between mono-/di-valent copper oxidation states occur in electron transfer reactions that underlie their biological functions. We report herein a dual channel fluorescent nanoprobe for the detection of mono- and di-valent copper ions. The probe, BSA-CDs@RBH/BCS, is designed by decorating carbon dots (CDs) on BSA encapsulated rhodamine hydrazide (RBH) and conjugating with bathocuproine disulfonate (BCS). Cu2+ catalyzes the hydrolysis of RBH, and the formed rhodamine B (RhB) shows emission at λex/λem = 360/575 nm which ensures Cu2+ detection. BSA reduces Cu2+ to Cu+ and the BCS–Cu+ chelate shows emission at λex/λem 360/450 nm which ensures Cu+ assay. Thus, the dual-channel fluorescence enables speciation of Cu2+ and Cu+.

Graphical abstract: Simultaneous detection and speciation of mono- and di-valent copper ions with a dual-channel fluorescent nanoprobe

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Article information

DOI
https://doi.org/10.1039/D0CC06750D
Article type
Communication
Submitted
09 Oct 2020
Accepted
10 Nov 2020
First published
10 Nov 2020

Chem. Commun., 2020,56, 15337-15340

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Simultaneous detection and speciation of mono- and di-valent copper ions with a dual-channel fluorescent nanoprobe

A. Zheng, C. Zhao, X. Wang, Y. Shu and J. Wang, Chem. Commun., 2020, 56, 15337 DOI: 10.1039/D0CC06750D

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