Synthesis and near-infrared photoluminescence properties of Ag2S quantum dots

Lier Deng; Wei Chen; Lun Ma

doi:10.1166/nnl.2017.2327

Synthesis and near-infrared photoluminescence properties of Ag₂S quantum dots

Lier Deng^*, Wei Chen, Lun Ma

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Ag₂S quantum dots (QDs) have been synthesis by a new one-step wet chemistry method. The obtained water-soluble Ag₂S QDs have long-term stability without sedimentation after storage for more than one year. The nanoparticles have a monoclinic crystal structure with average sizes of ∼45 nm and display a broad absorption from visible to near infrared (NIR) wavelength region with a peak at 1060 nm. Irradiated by a NIR laser of 808 nm, the photoluminescence in NIR-II region was found with its peak centered at 1110 nm. These Ag₂S QDs may be used as new nontoxic QDs for in vitro and vivo bio-imaging.

Original language	English
Pages (from-to)	533-536
Number of pages	4
Journal	Nanoscience and Nanotechnology Letters
Volume	9
Issue number	4
DOIs	https://doi.org/10.1166/nnl.2017.2327
Publication status	Published - Apr 2017
Externally published	Yes

Keywords

AgS QDs
Bioimaging
NIR-II
Photoluminescence

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Deng, L., Chen, W., & Ma, L. (2017). Synthesis and near-infrared photoluminescence properties of Ag₂S quantum dots. Nanoscience and Nanotechnology Letters, 9(4), 533-536. https://doi.org/10.1166/nnl.2017.2327

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AU - Chen, Wei

AU - Ma, Lun

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AB - Ag2S quantum dots (QDs) have been synthesis by a new one-step wet chemistry method. The obtained water-soluble Ag2S QDs have long-term stability without sedimentation after storage for more than one year. The nanoparticles have a monoclinic crystal structure with average sizes of ∼45 nm and display a broad absorption from visible to near infrared (NIR) wavelength region with a peak at 1060 nm. Irradiated by a NIR laser of 808 nm, the photoluminescence in NIR-II region was found with its peak centered at 1110 nm. These Ag2S QDs may be used as new nontoxic QDs for in vitro and vivo bio-imaging.

KW - AgS QDs

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KW - NIR-II

KW - Photoluminescence

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SN - 1941-4900

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EP - 536

JO - Nanoscience and Nanotechnology Letters

JF - Nanoscience and Nanotechnology Letters

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ER -

Synthesis and near-infrared photoluminescence properties of Ag₂S quantum dots

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Keywords

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