Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/82702
Title: A coordination and ligand replacement based three-input colorimetric logic gate sensing platform for melamine, mercury ions, and cysteine
Authors: Zhang, Lulu
Yuan, Yanwen
Wen, Xinglin
Li, Yue
Cao, Cuong
Xiong, Qihua
Keywords: Biosensors
Issue Date: 2015
Source: Zhang, L., Yuan, Y., Wen, X., Li, Y., Cao, C., & Xiong, Q. (2015). A coordination and ligand replacement based three-input colorimetric logic gate sensing platform for melamine, mercury ions, and cysteine. RSC Advances, 5(73), 59106-59113.
Series/Report no.: RSC Advances
Abstract: Discrimination of different species in various target scopes within a single sensing platform can provide many advantages such as simplicity, rapidness, and cost effectiveness. Here we design a three-input colorimetric logic gate, based on the aggregation and anti-aggregation of gold nanoparticles (Au NPs), for the sensing of melamine, cysteine, and Hg2+. The concept makes use of the advantages of the highly specific coordination and ligand replacement reactions between melamine, cysteine, Hg2+, and Au NPs. Different outputs are obtained with the combinational inputs in the logic gates, which can serve as a reference to discriminate different analytes within a single sensing platform. Furthermore, besides the intrinsic sensitivity and selectivity of Au NPs to melamine-like compounds, the “INH” gates of melamine/cysteine and melamine/Hg2+ in this logic system can be employed for sensitive and selective detections of cysteine and Hg2+, respectively.
URI: https://hdl.handle.net/10356/82702
http://hdl.handle.net/10220/40292
ISSN: 2046-2069
DOI: 10.1039/C5RA09570K
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
Rights: © 2015 The Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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