Ultralong and efficient phosphorescence from silica confined carbon nanodots in aqueous solution

doi:10.1016/j.nantod.2020.100900

CIOMP OpenIR

	Ultralong and efficient phosphorescence from silica confined carbon nanodots in aqueous solution
	Y. C. Liang; S. S. Gou; K. K. Liu; W. J. Wu; C. Z. Guo; S. Y. Lu; J. H. Zang; X. Y. Wu; Q. Lou; L. Dong; Y. F. Gao and C. X. Shan
	2020
Source Publication	Nano Today
ISSN	1748-0132
Volume	34 Pages:11
Abstract	Water-soluble phosphorescent nanoparticles are highly desirable for biomedical applications. However, the phosphorescence of nanoparticles is usually quenched in aqueous solutions due to the nonradiative deactivation of triplet excitons by the oxygen in water, thus it is a huge challenge to realize water-soluble phosphorescent nanoparticles. Herein, ultralong and efficient phosphorescence has been achieved from water-soluble carbon nanodots (CNDs) by confine CNDs in a nanospace. Silica capsulation layer is used to ensure the solublity of the CNDs, isolate the CNDs from the surrounding oxygen in the aqueous solution. Furthermore, the motion and vibration of covalent bonds in the CNDs are limited. In this way, the nonradiative deactivation rates of triplet excitons has been decreased, and efficient phosphorescence is achieved from water-soluble CNDs. The lifetime and phosphorescence quantum yield of the CNDs are 1.86 s and 11.6 %, both of which are the best values ever reported for water-soluble phosphorescent nanoparticles. In terms of the efficient phosphorescence of the CNDs in aqueous solution, in vivo/vitro afterglow imaging is also been demonstrated. (C) 2020 Elsevier Ltd. All rights reserved.
DOI	10.1016/j.nantod.2020.100900
URL	查看原文
Indexed By	SCI ; EI
Language	英语
Citation statistics
Document Type	期刊论文
Identifier	http://ir.ciomp.ac.cn/handle/181722/64989
Collection	中国科学院长春光学精密机械与物理研究所
Recommended Citation GB/T 7714	Y. C. Liang,S. S. Gou,K. K. Liu,et al. Ultralong and efficient phosphorescence from silica confined carbon nanodots in aqueous solution[J]. Nano Today,2020,34:11.
APA	Y. C. Liang.,S. S. Gou.,K. K. Liu.,W. J. Wu.,C. Z. Guo.,...&Y. F. Gao and C. X. Shan.(2020).Ultralong and efficient phosphorescence from silica confined carbon nanodots in aqueous solution.Nano Today,34,11.
MLA	Y. C. Liang,et al."Ultralong and efficient phosphorescence from silica confined carbon nanodots in aqueous solution".Nano Today 34(2020):11.

Files in This Item:
File Name/Size	DocType	Version	Access	License
Ultralong and effici（3493KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	View Download

File name:	Ultralong and efficient phosphorescence from silicaconfined carbon nanodots in .pdf
Format:	Adobe PDF

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院长春光学精密机械与物理研究所