Highly luminescent N, S- Co-doped carbon dots and their direct use as mercury(II) sensor

Analytica Chimica Acta
Yu WangLiang Feng

Abstract

Heteroatom doping has been proven as an efficient way to improve the fluorescent efficiency of carbon dots. Co-doping with heteroatoms may introduce more active sites to carbon dots, which would broaden applications of CDs in sensing. In this work, highly luminescent nitrogen and sulfur co-doped carbon dots (NSCDs) were synthesized through a facile one-step microwave assisted method by using citric acid and rubeanic acid as carbon, nitrogen, and sulfur sources. The well-isolated NSCDs not only exhibit an enhanced fluorescent efficiency with a relatively high quantum yield up to 17.6%, but also show potential use as a multi-sensing platform based on their fluorescence "on-off-on" and color changing behaviors. The NSCDs can be directly used for the selective determination of mercury cations without any functionalization. The detection limit is approximately calculated as 0.18 μM and linear range is 0-20 μM. The sensing mechanism is proposed as coordination reaction induced by oligomers upon the carbon core. Furthermore, in the presence of cyanide anions, the fluorescence shows linear recovery associated with the concentration of cyanide, indicating its potential usage for the detection of cyanide ion. The optimized pH range for s...Continue Reading

References

Oct 8, 2004·Journal of the American Chemical Society·Xiaoyou XuWalter A Scrivens
Jun 15, 2006·Journal of the American Chemical Society·Ya-Ping SunSu-Yuan Xie
Mar 11, 2010·Advanced Materials·Goki EdaManish Chhowalla
Jun 24, 2010·Angewandte Chemie·Xin WangYa-Ping Sun
Aug 6, 2010·Angewandte Chemie·Sheila N Baker, Gary A Baker
Feb 26, 2011·Nanoscale·Parambath AnilkumarYa-Ping Sun
Dec 21, 2011·Chemical Society Reviews·Ha Na KimJuyoung Yoon
Dec 29, 2011·Journal of the American Chemical Society·Marta J KrysmannEmmanuel P Giannelis
Dec 25, 2012·Physical Chemistry Chemical Physics : PCCP·Chang Hyuck ChoiSeong Ihl Woo
Oct 16, 2014·Chemical Society Reviews·Shi Ying LimZhiqiang Gao
Feb 24, 2015·Analytica Chimica Acta·Xiaojuan GongMartin M F Choi
Jun 9, 2015·Chemical Communications : Chem Comm·Abhishek GuptaChayan Kanti Nandi

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Citations

Nov 7, 2016·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Qianghua YeLi Chen
Feb 1, 2017·Luminescence : the Journal of Biological and Chemical Luminescence·Shujuan YuXuehong Zhang
Jul 27, 2018·Advanced Healthcare Materials·Dingying ShanJian Yang
Sep 16, 2017·Luminescence : the Journal of Biological and Chemical Luminescence·Wei BianMartin M F Choi
Aug 4, 2018·Chemistry : a European Journal·Feng LiHuaping Xu
Oct 28, 2019·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Sifan XuZhong Zhang
Nov 13, 2018·Nano-micro Letters·Kok Ken ChanKen-Tye Yong
Feb 3, 2019·Sensors·Nerea De AchaFrancisco J Arregui
Apr 28, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Pingjing LiSam F Y Li
Dec 7, 2016·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Quan XuNeng Li
Jan 23, 2018·Physical Chemistry Chemical Physics : PCCP·Guili HeYan Zhang
Feb 15, 2017·Analytica Chimica Acta·Eliana F C SimõesJoaquim C G Esteves da Silva
Jul 4, 2019·ACS Sensors·Meixiu LiJingquan Liu

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