Colloidal Second Near-infrared-emitting Mn-doped Ag2S Quantum Dots
SCIE
SCOPUS
- Title
- Colloidal Second Near-infrared-emitting Mn-doped Ag2S Quantum Dots
- Authors
- Jeong, Sanghwa; Doh, Hyunmi; Kim, Sungjee
- Date Issued
- 2020-03
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- Incorporation of transition metal dopants within a semiconductor nanocrystal has a tremendous effect on the optical and magnetic properties of the semiconductor nanocrystals. Herein, we report on a novel synthesis of second near-infrared-emitting photoluminescent Mn2+-doped Ag2S quantum dots via co-pyrolysis of silver and manganese single-source precursors. The Mn2+ doping level was flexibly tuned in Ag2S quantum dots, which was confirmed by elemental analysis and electron paramagnetic resonance spectroscopy. The Mn2+ doping induced negligible change in the pristine monoclinic acanthite Ag2S crystal structure but significantly decreased the photoluminescent intensity. Mn2+-doped Ag2S QDs exhibit second near-infrared emission and ferromagnetic ordering, which show the potential applicability for multimodal fluorescence/MRI probes.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/103603
- DOI
- 10.1002/cnma.202000086
- ISSN
- 2199-692X
- Article Type
- Article
- Citation
- CHEMNANOMAT, vol. 6, no. 4, page. 538 - 541, 2020-03
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