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Updated: Jun 7, 2026

An Aptamer-based Sensor for Unchelated Gadolinium(III)
Published on: January 9, 2017
Highly selective ratiometric fluorescent sensing for Hg(2+) and Au(3+), respectively, in aqueous media
Ming Dong1, Ya-Wen Wang, Yu Peng
1State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
Abstract:
A nonsulfur probe based on a 1,8-naphthalimide and alkyne conjugate for the ratiometric fluorescent sensing for Hg(2+) and Au(3+) through the tuning of pH in different aqueous solutions is described. This work provides a novel reaction-based approach for selective recognition of these two ions with significant change of fluorescence color and constitutes the first ratiometric case for Au(3+).
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