Fluorometric sensing of oxygen using manganese(II)-doped zinc sulfide nanocrystals

Fangyuan Lin; Zhiwei Lai; Linchun Zhang; Yipeng Huang; Feiming Li; Pingyun Chen; Yiru Wang; Xi Chen

doi:10.1007/s00604-019-4056-7

Fluorometric sensing of oxygen using manganese(II)-doped zinc sulfide nanocrystals

Mikrochim Acta. 2019 Dec 18;187(1):66. doi: 10.1007/s00604-019-4056-7.

Authors

Fangyuan Lin¹, Zhiwei Lai¹, Linchun Zhang¹, Yipeng Huang¹, Feiming Li¹, Pingyun Chen², Yiru Wang¹, Xi Chen^{3

4

5}

Affiliations

¹ Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
² National Quality Supervision and Inspection Center for Incense Products (Fujian), Quanzhou, 362600, Fujian, China.
³ Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China. xichen@xmu.edu.cn.
⁴ State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China. xichen@xmu.edu.cn.
⁵ Shenzhen Research Institute of Xiamen University, Shenzhen, 518000, China. xichen@xmu.edu.cn.

PMID: 31853697
DOI: 10.1007/s00604-019-4056-7

Abstract

Manganese(II)-doped zinc sulfide nanocrystals (Mn:ZnS NCs) with dual-emission fluorescence (peaks at 445 nm and 590 nm under 330 nm excitation), good water stability and low toxicity were synthesized by hot injection. The fluorescence intensity of both emission bands of the nanocrystals can change rapidly by the content of gaseous and dissolved oxygen. The process is fully reversible. Compared with the maximum intensity of Mn:ZnS sensing film in 100% nitrogen, the emission of the blue emission decreases by 72% in the presence of 100% oxygen, and the yellow emission by 32%. Response is linear in the presence of 3% to 12% of oxygen percentage in gas. For water-dissolved oxygen, the linear response occurs between 0.54 and 11.4 mg·L^-1. Graphical abstractMn-doped ZnS NCs with dual-emission fluorescence were synthesized by hot-injection method. The reversible and rapid sensing characteristics of Mn-doped ZnS NCs to oxygen were studied, and the possible sensing mechanism was investigated.

Keywords: Dissolved oxygen; Dual-emission fluorescence; Inherent sensing characteristic; Oxygen gas; Semiconductor nanocrystals; Surface luminescence centers; Trap state.

Publication types

Research Support, Non-U.S. Gov't

Abstract

Publication types

Grants and funding