Journal
MATERIALS LETTERS
Volume 200, Issue -, Pages 27-30Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.04.082
Keywords
CuInS2 quantum dots; Optical materials and properties; Aqueous-phase synthesis; Tunable emission; Spectroscopy
Funding
- National Natural Science Foundation of China [51372201, 21476183, 21676213]
- China Postdoctoral Science Foundation [2016M600809]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20136101110009]
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The water-soluble CuInS2 quantum dots (CIS QDs) have been successfully synthesized by a one-pot aqueous-phase synthesis method using indium chloride and copper chloride as reactants. The type-I structure CIS/ZnS core/shell QDs were synthesized in situ for surface passivation, which led to a dramatic enhancement of fluorescence intensity. The CIS/ZnS QDs exhibited a tunable emission in the range of 500-680 nm by changing the ratio of Cu:In without the variation of size. And the corresponding fluorescent color changed from green to red. The QDs with uniform diameter could be assigned to a typical chalcopyrite structure according to XRD analysis. The as-prepared CIS/ZnS QDs have a good potential to be applied in biomedical fluorescence label and probes due to their low toxicity and excellent optical features. (C) 2017 Elsevier B.V. All rights reserved.
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