A detour strategy for colloidally stable block-copolymer grafted MAPbBr(3) quantum dots in water with long photoluminescence lifetime

doi:10.1039/c8nr01493k

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	A detour strategy for colloidally stable block-copolymer grafted MAPbBr(3) quantum dots in water with long photoluminescence lifetime
	Yang, Shuang 1; Zhang, Feng 2; Tai, Jia 1; Li, Yang 1; Yang, Yang 1; Wang, Hui 1; Zhang, Jianxu 3; Xie, Zhigang 3; Xu, Bin 1; Zhong, Haizheng 2
刊名	NANOSCALE
	2018-04-07
卷号	10 期号:13 页码:5820-5826
ISSN号	2040-3364
DOI	10.1039/c8nr01493k
英文摘要	Perovskite quantum dots (PQDs) exhibit remarkable photoluminescence properties; however, their use in biological applications is hindered by their extreme sensitivity to water. We report a facile and general strategy for the preparation of aqueous colloidally stable polystyrene-b-poly(ethyl oxide) (PS-b-PEO) grafted MAPbBr(3) QDs (MA = methylammonium): transferring the as-synthesized PQD@PS-b-PEO from toluene into water using precipitation in hexane as a critical intermediate step. When rehydrating the precipitate in water, the PQDs can be dispersed well individually or self-assembled into well-defined vesicular nanostructures with high photoluminescence quantum yields of up to 43%, high color purity (full width at half maximum down to 18 nm), and long average photoluminescence lifetimes up to 164 ns. The resulting PQD nanostructures in water also show excellent thermo- and photo-stability, low cytotoxicity, and bright potential for cell imaging. This work highlights the future prospects of using polymer-modified PQDs with desired physicochemical properties for biomedical applications.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000428788200003
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46175]
专题	中国科学院化学研究所
通讯作者	Zhong, Haizheng; Liu, Kun
作者单位	1.Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun 130012, Jilin, Peoples R China 2.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Nanophoton & Ultrafine Optoelect, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Yang, Shuang,Zhang, Feng,Tai, Jia,et al. A detour strategy for colloidally stable block-copolymer grafted MAPbBr(3) quantum dots in water with long photoluminescence lifetime[J]. NANOSCALE,2018,10(13):5820-5826.
APA	Yang, Shuang.,Zhang, Feng.,Tai, Jia.,Li, Yang.,Yang, Yang.,...&Yang, Bai.(2018).A detour strategy for colloidally stable block-copolymer grafted MAPbBr(3) quantum dots in water with long photoluminescence lifetime.NANOSCALE,10(13),5820-5826.
MLA	Yang, Shuang,et al."A detour strategy for colloidally stable block-copolymer grafted MAPbBr(3) quantum dots in water with long photoluminescence lifetime".NANOSCALE 10.13(2018):5820-5826.