Controllable synthesis of highly luminescent boron nitride quantum dots

Boron nitride quantum dots (BNQDs), as a new member of heavy metal‐free quantum dots, have aroused great interest in fundamental research and practical application due to their unique physical/chemical properties. However, it is still a challenge to controllably synthesize high‐quality BNQDs with hi...

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Main Authors: Li, Hongling, Tay, Roland Yingjie, Tsang, Siu Hon, Zhen, Xu, Teo, Edwin Hang Tong
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2018
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Online Access:https://hdl.handle.net/10356/87232
http://hdl.handle.net/10220/45265
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-872322020-06-01T10:01:43Z Controllable synthesis of highly luminescent boron nitride quantum dots Li, Hongling Tay, Roland Yingjie Tsang, Siu Hon Zhen, Xu Teo, Edwin Hang Tong School of Electrical and Electronic Engineering School of Materials Science & Engineering CNRS International NTU THALES Research Alliances Temasek Laboratories Liquid Exfoliation Boron Nitride Boron nitride quantum dots (BNQDs), as a new member of heavy metal‐free quantum dots, have aroused great interest in fundamental research and practical application due to their unique physical/chemical properties. However, it is still a challenge to controllably synthesize high‐quality BNQDs with high quantum yield (QY), uniform size and strong fluorescent. In this work, BNQDs have been successfully fabricated by the liquid exfoliation and the subsequent solvothermal process with respect to its facileness and easy large scale up. Importantly, BNQDs with high‐quality can be controllably obtained by adjusting the synthetic parameters involved in the solvothermal process including filling factor, synthesis temperature, and duration time. Encouragingly, the as‐prepared BNQDs possess strong blue luminescence with QY as high as 19.5%, which can be attributed to the synergetic effect of size, surface chemistry and edge defects. In addition, this strategy presented here provides a new reference for the controllable synthesis of other heavy metal‐free QDs. Furthermore, the as‐prepared BNQDs are non‐toxic to cells and exhibit nanosecond‐scaled lifetimes, suggesting they have great potential biological and optoelectronic applications. MOE (Min. of Education, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) 2018-07-26T08:26:26Z 2019-12-06T16:37:46Z 2018-07-26T08:26:26Z 2019-12-06T16:37:46Z 2015 Journal Article Li, H., Tay, R. Y., Tsang, S. H., Zhen, X., & Teo, E. H. T. (2015). Controllable Synthesis of Highly Luminescent Boron Nitride Quantum Dots. Small, 11(48), 6491-6499. 1613-6810 https://hdl.handle.net/10356/87232 http://hdl.handle.net/10220/45265 10.1002/smll.201501632 en Small © 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Liquid Exfoliation
Boron Nitride
spellingShingle Liquid Exfoliation
Boron Nitride
Li, Hongling
Tay, Roland Yingjie
Tsang, Siu Hon
Zhen, Xu
Teo, Edwin Hang Tong
Controllable synthesis of highly luminescent boron nitride quantum dots
description Boron nitride quantum dots (BNQDs), as a new member of heavy metal‐free quantum dots, have aroused great interest in fundamental research and practical application due to their unique physical/chemical properties. However, it is still a challenge to controllably synthesize high‐quality BNQDs with high quantum yield (QY), uniform size and strong fluorescent. In this work, BNQDs have been successfully fabricated by the liquid exfoliation and the subsequent solvothermal process with respect to its facileness and easy large scale up. Importantly, BNQDs with high‐quality can be controllably obtained by adjusting the synthetic parameters involved in the solvothermal process including filling factor, synthesis temperature, and duration time. Encouragingly, the as‐prepared BNQDs possess strong blue luminescence with QY as high as 19.5%, which can be attributed to the synergetic effect of size, surface chemistry and edge defects. In addition, this strategy presented here provides a new reference for the controllable synthesis of other heavy metal‐free QDs. Furthermore, the as‐prepared BNQDs are non‐toxic to cells and exhibit nanosecond‐scaled lifetimes, suggesting they have great potential biological and optoelectronic applications.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Li, Hongling
Tay, Roland Yingjie
Tsang, Siu Hon
Zhen, Xu
Teo, Edwin Hang Tong
format Article
author Li, Hongling
Tay, Roland Yingjie
Tsang, Siu Hon
Zhen, Xu
Teo, Edwin Hang Tong
author_sort Li, Hongling
title Controllable synthesis of highly luminescent boron nitride quantum dots
title_short Controllable synthesis of highly luminescent boron nitride quantum dots
title_full Controllable synthesis of highly luminescent boron nitride quantum dots
title_fullStr Controllable synthesis of highly luminescent boron nitride quantum dots
title_full_unstemmed Controllable synthesis of highly luminescent boron nitride quantum dots
title_sort controllable synthesis of highly luminescent boron nitride quantum dots
publishDate 2018
url https://hdl.handle.net/10356/87232
http://hdl.handle.net/10220/45265
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