Facile and rapid synthesis of emission color-tunable molybdenum oxide quantum dots as a versatile probe for fluorescence imaging and environmental monitoring

doi:10.1039/d0an01510e

	Facile and rapid synthesis of emission color-tunable molybdenum oxide quantum dots as a versatile probe for fluorescence imaging and environmental monitoring
	Cao, Haiyan 1,2; Tang, Mingjie 3; Wang, Xin 4; Shi, Wenbing 1,2
刊名	ANALYST
	2020-10-07
卷号	145 期号:19 页码:6270-6276
ISSN号	0003-2654
DOI	10.1039/d0an01510e
通讯作者	Cao, Haiyan(caohaiyan@yznu.edu.cn)
英文摘要	Recent years have seen molybdenum oxide quantum dots (MoO(x)QDs) as a booming material due to their attractive physical and chemical properties. However, there is still a large demand for MoO(x)QDs with long-wavelength emission by a facile strategy but these are more challenging to obtain. Herein, we rationally designed and successfully prepared nitrogen and phosphorus co-doped green emitting MoO(x)QDs (N,P-MoO(x)QDs) through a microwave-assisted rapid method. They exhibit a maximum emission at 500 nm under a 430 nm excitation. Moreover, by controlling their sizes in the process, we find that such a strategy enables the tuning of the emission color of N,P-MoO(x)QDs from green to blue. N,P-MoO(x)QDs show a significant fluorescence response to pH changes, and also display pH-sensitive near-infrared localized surface plasmon resonance (LSPR) at 866 nm. An effective and simple pH probe with a dual-signal response is achieved using N,P-MoO(x)QDs. As environmental sensors, N,P-MoO(x)QDs can be applied for sensitive detection of the concentrations of permanganate and captopril, offering the linear range from 0.08 to 25 mu M and 0.1 to 31 mu M, respectively. Benefitting from the effect of doping nitrogen and phosphorus, the probe could detect a wide range of pH changes (2-9) and is endowed with superior biocompatibility. Further, it is successfully used to "see" the intracellular pH variation by fluorescence confocal imaging. These findings not only demonstrate the achievement of a promising multifunctional probe for biosensing and environmental detection, but also pave the way for the fabrication of transition metal oxide QDs with tunable optical properties.
资助项目	National Natural Science Foundation of China[21707137] ; Natural Science Foundation of Chongqing City[CSTC-2018jcyjAX0140] ; Scientific and Technological Research Program of Chongqing Municipal Education Commission[KJQN201801401] ; Yangtze Normal University[2017KYQD23] ; Yangtze Normal University[2017QNRC20] ; Young Scientist Research Fund of Yangtze Normal University
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000573175200007
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/11865]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Cao, Haiyan
作者单位	1.Yangtze Normal Univ, Key Lab Chongqing Inorgan Special Funct Mat, Chongqing 408100, Peoples R China 2.Yangtze Normal Univ, Coll Chem & Chem Engn, Chongqing 408100, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 4.Southwest Univ, Coll Chem & Chem Engn, Chongqing 400715, Peoples R China
推荐引用方式 GB/T 7714	Cao, Haiyan,Tang, Mingjie,Wang, Xin,et al. Facile and rapid synthesis of emission color-tunable molybdenum oxide quantum dots as a versatile probe for fluorescence imaging and environmental monitoring[J]. ANALYST,2020,145(19):6270-6276.
APA	Cao, Haiyan,Tang, Mingjie,Wang, Xin,&Shi, Wenbing.(2020).Facile and rapid synthesis of emission color-tunable molybdenum oxide quantum dots as a versatile probe for fluorescence imaging and environmental monitoring.ANALYST,145(19),6270-6276.
MLA	Cao, Haiyan,et al."Facile and rapid synthesis of emission color-tunable molybdenum oxide quantum dots as a versatile probe for fluorescence imaging and environmental monitoring".ANALYST 145.19(2020):6270-6276.