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나노입자 연구단
나노입자 연구단
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Chemical Synthesis, Doping, and Transformation of Magic-Sized Semiconductor Alloy Nanoclusters

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Title
Chemical Synthesis, Doping, and Transformation of Magic-Sized Semiconductor Alloy Nanoclusters
Author(s)
Jiwoong Yang; Franziska Muckel; Woonhyuk Baek; Rachel Fainblat; Hogeun Chang; Gerd Bacher; Taeghwan Hyeon
Publication Date
2017-05
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.139, no.19, pp.6761 - 6770
Publisher
AMER CHEMICAL SOC
Abstract
Nanoclusters are important prenucleation intermediates for colloidal nanocrystal synthesis. In addition, they exhibit many intriguing properties originating from their extremely small size lying between molecules and typical nanocrystals. However, synthetic control of multicomponent semiconductor nanoclusters remains a daunting goal. Here, we report on the synthesis, doping, and transformation of multielement magic-sized clusters, generating the smallest semiconductor alloys. We use Lewis acid-base reactions at room temperature to synthesize alloy clusters containing three or four types of atoms. Mass spectrometry reveals that the alloy clusters exhibit magic-size characteristics with chemical formula of ZnxCd13-xSe13 (x = 0-13) whose compositions are tunable between CdSe and ZnSe. Successful doping of these clusters creates a new class of diluted magnetic semiconductors in the extreme quantum confinement regime. Furthermore, the important role of these alloy clusters as prenucleation intermediates is demonstrated by low temperature transformation into quantum alloy nanoribbons and nanorods. Our study will facilitate the understanding of these novel diluted magnetic semiconductor nanoclusters, and offer new possibilities for the controlled synthesis of nanomaterials at the prenucleation stage, consequently producing novel multicomponent nanomaterials that are difficult to synthesize. © 2017 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/3711
ISSN
0002-7863
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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