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Tunable photoluminescence of CdTe QDs through the modification of polyoxometalates

Shixian LiuHenan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, ChinaView further author information

Ningning GuoHenan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, ChinaView further author information

Xia WuHenan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, ChinaView further author information

Niuniu ZhangHenan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, ChinaView further author information

Yunping LiHenan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, ChinaView further author information

Guan WangHenan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, ChinaCorrespondence[email protected]

https://orcid.org/0000-0002-0082-1875 View further author information

Abstract

A series of POMs/CdTe nanocomposites were successfully synthesized by the combination of CdTe quantum dots (QDs) with different polyoxometalates (POMs) PW₁₂, PMo₁₂, SiW₁₂, and SiW₉. These nanocomposites based on CdTe QDs exhibited tunable photoluminescence properties due to the influence of the POMs. In particular, PW₁₂/CdTe showed obvious emission shifts from a wavelength of 666 nm to 672 nm by control of the CdTe:PW₁₂ molar ratio. Due to the electron acceptance ability of POMs, a new method was found to control the light emission from QDs. Furthermore, the strategy reported in this work can be applied to bioimaging, fluorescent probes, light-emitting diodes, and photodetectors.

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No potential conflict of interest was reported by the authors.

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Funding

This work was supported by the Natural Science Foundation of China (Grants: 21901061 and U1504201). The Program for Innovation Teams in Science and Technology in Universities of Henan Province (20IRTSTHN004).

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Tunable photoluminescence of CdTe QDs through the modification of polyoxometalates

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Tunable photoluminescence of CdTe QDs through the modification of polyoxometalates

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