Cation exchange-based facile aqueous synthesis of small, stable, and nontoxic near-infrared Ag2Te/ZnS core/shell quantum dots emitting in the second biological window

	Cation exchange-based facile aqueous synthesis of small, stable, and nontoxic near-infrared Ag2Te/ZnS core/shell quantum dots emitting in the second biological window
	Chen, Chi; He, Xuewen; Gao, Li; Ma, Nan
刊名	ACS APPLIED MATERIALS & INTERFACES
	2013
英文摘要	Facile aqueous synthesis of near-infrared Ag2Te quantum dots (QDs) and Ag2Te/ZnS core/shell QDs emitting in the second biological window is reported. TheQD synthesis is based on a straightforward cation exchange process between CdTe QD and Ag+ ions conducted in aqueous solution. The prepared Ag2TeQDs possess near-infrared emission ranging from 900 to 1300 nm and a quantum yield up to 2.1%. A ZnS shell was grown on the Ag2Te QD to further enhance the photoluminescence intensity with a quantum yield of 5.6%. These Ag2Te/ZnS core/shell QDs possess robust colloidal stability and photostability with minimum photoluminescence fluctuation upon incubation for 72 h in biological buffer or continuous laser excitation for 120 min. Also, These QDs possesssmall hydrodynamic size (similar to 7.6 nm) and are non-cytotoxic to human cells, which is ideal for optical bioimaging in the second biological window.
收录类别	SCI
原文出处	http://pubs.acs.org/doi/abs/10.1021/am302933x
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/5161]
专题	深圳先进技术研究院_医药所
作者单位	ACS APPLIED MATERIALS & INTERFACES
推荐引用方式 GB/T 7714	Chen, Chi,He, Xuewen,Gao, Li,et al. Cation exchange-based facile aqueous synthesis of small, stable, and nontoxic near-infrared Ag2Te/ZnS core/shell quantum dots emitting in the second biological window[J]. ACS APPLIED MATERIALS & INTERFACES,2013.
APA	Chen, Chi,He, Xuewen,Gao, Li,&Ma, Nan.(2013).Cation exchange-based facile aqueous synthesis of small, stable, and nontoxic near-infrared Ag2Te/ZnS core/shell quantum dots emitting in the second biological window.ACS APPLIED MATERIALS & INTERFACES.
MLA	Chen, Chi,et al."Cation exchange-based facile aqueous synthesis of small, stable, and nontoxic near-infrared Ag2Te/ZnS core/shell quantum dots emitting in the second biological window".ACS APPLIED MATERIALS & INTERFACES (2013).