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첨단연성물질 연구단
첨단연성물질 연구단
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Integrative Approach toward Uncovering the Origin of Photoluminescence in Dual Heteroatom-Doped Carbon Nanodots

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Title
Integrative Approach toward Uncovering the Origin of Photoluminescence in Dual Heteroatom-Doped Carbon Nanodots
Author(s)
Yuri Choi; Byungkyun Kang; Jooyong Lee; Sunghu Kim; Gyeong Tae Kim; Hyunju Kang; Bo Ram Lee; Hajin Kim; Sang-Hee Shim; Geunsik Lee; Oh-Hoon Kwon; Byeong-Su Kim
Publication Date
2016-10
Journal
CHEMISTRY OF MATERIALS, v.28, no.19, pp.6840 - 6847
Publisher
AMER CHEMICAL SOC
Abstract
The pursuit of exceptionally high photoluminescence (PL) and stability is critical in the development of novel fluorophores for use in challenging bioimaging and optoelectronic devices. Carbon nanodots (CDs) doped with heteroatoms provide a particularly attractive means of effectively tailoring their intrinsic properties and exploiting new phenomena. Here, we report a one-step, scalable synthesis of boron-and-nitrogen co-doped CD (BN-CD) with outstanding optical properties unlike those of nitrogen-doped CD (N-CD) in solid state as well as solution. The detailed mechanistic framework was explored using a series of spectroscopic analyses and ultrafast spectroscopy coupled with density functional theory calculations, which all conclusively confirmed that the presence of more graphitic structures in the core and well-distributed surface states are responsible for the enhanced PL in BN-CD. Furthermore, single-molecule spectroscopy analysis demonstrated that a single BN-CD shows higher PL intensity and enhanced photobleaching time. We anticipate that this study will aid in uncovering the full potential of CDs in various fields. © 2016 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/3264
ISSN
0897-4756
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > Journal Papers (저널논문)
Files in This Item:
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