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Defect engineering route to boron nitride quantum dots and edge-hydroxylated functionalization for bio-imaging

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Title
Defect engineering route to boron nitride quantum dots and edge-hydroxylated functionalization for bio-imaging
Author(s)
Jung-Hwan Jung; Moumita Kotal; Min-Ho Jang; Junseok Lee; Yong-Hoon Cho; Won-Jong Kim; Il Kwon Oh
Publication Date
2016-07
Journal
RSC ADVANCES, v.6, no.77, pp.73939 - 73946
Publisher
ROYAL SOC CHEMISTRY
Abstract
Hexagonal boron nitride (h-BN) has considerable potential for applications owing to its attractive features including good thermal conductivity, chemical stability, and unique optical properties. However, because h-BN is chemically inert and thermally stable, it is hard to synthesize boron nitride quantum dots (BNQDs) using chemical methods such as oxidation, hetero-atom doping or functionalization. Here, we report a defect engineering method to synthesize BNQDs from h-BN using physical energy sources including an impinging process of heated iron nanoparticles, microwave irradiation and sonication. Furthermore, edge-hydroxylated functionalization was employed to enhance the intracellular uptake of the BNQDs in cells for bioimaging. The edge-hydroxylated BNQDs (EH-BNQDs) showed blue colored photoluminescence with 325 nm laser excitation, good cytotoxicity performance with approximately 100% cell viability, and a good attachment to cell surfaces. The successful endocytosis of EH-BNQDs using a cancer cell line was also demonstrated. © 2016 The Royal Society of Chemistry
URI
https://pr.ibs.re.kr/handle/8788114/3010
ISSN
2046-2069
Appears in Collections:
Center for Self-assembly and Complexity(복잡계 자기조립 연구단) > Journal Papers (저널논문)
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