DataVXACS Applied Nano MaterialsPaper
journal article·2022-03-25

Graphitic Carbon Nitride Quantum Dots in Dual-Mode Fluorescence Switching Platforms for Trace Analysis of Ag(I) and l-Cysteine

Xinrong Guo, Jie Yang, Yubo Wei, Lishi Wang, Jiang Pi

ACS Applied Nano Materials· Volume 5· Issue 3
Publisher page
Source abstract

Abstract

Graphitic carbon nitride quantum dots (g-C3N4 QDs) are synthesized using a simple, one-pot, and methylamine-assisted hydrothermal method. This material with excellent fluorescence property can be contracted in dual-mode fluorescence switching platforms for trace analysis of Ag(I) and cysteine. Upon adding Ag(I), the fluorescence intensity of g-C3N4 QDs is quenched quickly, but its fluorescence resonance light scattering (RLS) intensity increases owing to the synergistic mechanism between photo-induced electron transfer and chelation mechanisms. Upon subsequently adding cysteine, the fluorescence intensity of g-C3N4 QDs recovers rapidly; however, its RLS intensity decreases obviously due to the strong binding ability between Ag(I) and thiols. According to this interesting reaction mechanism, an “on–off–on” and “off–on–off” dual-mode fluorescence switching sensor exhibits high selectivity and sensitivity for simultaneously analyzing Ag(I) and cysteine, and the detection limits are calculated to be 8.0 and 10.3 nmol L–1, respectively. The present study also displays excellent analytical performance for the analysis of Ag(I) and cysteine in natural samples.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Carbon and Quantum Dots Applications · Advanced Nanomaterials in Catalysis · Advanced biosensing and bioanalysis techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, People’s Republic of China

Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People’s Republic of China

School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, People’s Republic of China

Institute of Laboratory Medicine, School of Medical Technology, The First Dongguan Affiliated Hospital, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan 523808, People’s Republic of China

Funding

National Natural Science Foundation of China · Funds for PHD researchers of Guangdong Medical University in 2021 · Yunnan Fundamental Research Projects · Guangdong Basic and Applied Basic Research Foundation

References (50)

Show source-provided references
1. 10.1002/smll.20150083110.1002/smll.201500831 ↗
2. 10.1016/j.jhazmat.2021.12504110.1016/j.jhazmat.2021.125041 ↗
3. 10.1016/j.dyepig.2020.10823510.1016/j.dyepig.2020.108235 ↗
4. 10.1139/cjc-2017-024110.1139/cjc-2017-0241 ↗
5. 10.1016/j.dyepig.2020.10879310.1016/j.dyepig.2020.108793 ↗
6. 10.1016/j.talanta.2020.12143010.1016/j.talanta.2020.121430 ↗
7. 10.1016/j.snb.2020.12909710.1016/j.snb.2020.129097 ↗
8. 10.1016/j.dyepig.2020.10912610.1016/j.dyepig.2020.109126 ↗
9. 10.1016/j.aca.2020.11.05410.1016/j.aca.2020.11.054 ↗
10. 10.1016/j.ijbiomac.2020.03.02610.1016/j.ijbiomac.2020.03.026 ↗
11. 10.1039/d0an00164c10.1039/d0an00164c ↗
12. Noroozifar M. · Turk. J. Chem. · 2008 · 32 · 249
13. 10.1016/j.talanta.2019.03.05910.1016/j.talanta.2019.03.059 ↗
14. 10.1016/j.jtice.2021.09.01510.1016/j.jtice.2021.09.015 ↗
15. 10.1021/acsomega.9b0238910.1021/acsomega.9b02389 ↗
16. 10.1039/d0ay01592j10.1039/d0ay01592j ↗
17. 10.1016/j.microc.2018.12.02210.1016/j.microc.2018.12.022 ↗
18. 10.1080/10601325.2018.145326010.1080/10601325.2018.1453260 ↗
19. 10.1021/acsami.8b1550110.1021/acsami.8b15501 ↗
20. 10.1039/c9nr04568f10.1039/c9nr04568f ↗
21. 10.1039/c8an02110d10.1039/c8an02110d ↗
22. 10.1039/c9tb01410a10.1039/c9tb01410a ↗
23. 10.1002/adfm.20210254010.1002/adfm.202102540 ↗
24. 10.1002/smll.20190273510.1002/smll.201902735 ↗
25. 10.1016/j.aca.2018.03.06310.1016/j.aca.2018.03.063 ↗
26. 10.1039/c4tb01740d10.1039/c4tb01740d ↗
27. 10.1039/c9tb00019d10.1039/c9tb00019d ↗
28. 10.1016/0022-2852(69)90101-510.1016/0022-2852(69)90101-5 ↗
29. 10.1016/j.apcatb.2021.12027210.1016/j.apcatb.2021.120272 ↗
30. 10.1016/j.jhazmat.2021.12612110.1016/j.jhazmat.2021.126121 ↗
31. 10.1016/j.jhazmat.2021.12568010.1016/j.jhazmat.2021.125680 ↗
32. 10.1016/j.apsusc.2021.14981410.1016/j.apsusc.2021.149814 ↗
33. 10.1021/acsnano.0c0514310.1021/acsnano.0c05143 ↗
34. 10.1016/j.cej.2020.12780410.1016/j.cej.2020.127804 ↗
35. 10.1039/d1tc01734a10.1039/d1tc01734a ↗
36. 10.1016/j.jhazmat.2020.12350910.1016/j.jhazmat.2020.123509 ↗
37. 10.1021/acs.jpcc.7b0658710.1021/acs.jpcc.7b06587 ↗
38. 10.1016/j.snb.2020.12776610.1016/j.snb.2020.127766 ↗
39. 10.1016/j.ceramint.2019.05.00210.1016/j.ceramint.2019.05.002 ↗
40. 10.1039/c8an01620h10.1039/c8an01620h ↗
41. 10.1039/c9ra02028d10.1039/c9ra02028d ↗
42. 10.1007/s00604-019-3228-910.1007/s00604-019-3228-9 ↗
43. 10.1016/j.microc.2021.10648010.1016/j.microc.2021.106480 ↗
44. 10.1016/j.talanta.2017.11.05710.1016/j.talanta.2017.11.057 ↗
45. 10.1016/j.bios.2016.03.01110.1016/j.bios.2016.03.011 ↗
46. 10.1016/j.snb.2018.04.03610.1016/j.snb.2018.04.036 ↗
47. 10.1016/j.bios.2016.05.06410.1016/j.bios.2016.05.064 ↗
48. 10.1007/s12221-021-1210-810.1007/s12221-021-1210-8 ↗
49. 10.1021/acsami.8b1052910.1021/acsami.8b10529 ↗
50. 10.1039/c1cc15323d10.1039/c1cc15323d ↗