Chiral CdSe nanoplatelets as an ultrasensitive probe for lead ion sensing

Wang, Xiongbin1; Hao, Junjie1,2; Cheng, Jiaji3,4; Li, Junzi3; Miao, Jun5,6; Li, Ruxue1; Li, Yiwen1,5; Li, Jiagen7; Liu, Yuhui1; Zhu, Xi7; Liu, Yanjun1; Sun, Xiao Wei1; Tang, Zikang5; Delville, Marie-Helene2; He, Tingchao3; Chen, Rui1

2019-05-21

10.1039/c8nr10506e

Nanoscale   影响因子和分区

2040-3364

2040-3372

As opposed to traditional photoluminescence and ultra-violet based optical sensing, we present here a sensing system based on resolved optically active polarization with promising applications. It is based on the ultrathin CdSe nanoplatelets (NPLs) when modified with either L or D-cysteine molecules (L/D-cys) as bio-to-nano ligands. The chiral ligand transfers its chiroptical activity to the achiral nanoplatelets with an anisotropy factor of similar to 10(-4), which unlocks the chiral excitonic transitions and allows lead ion detection with a limit of detection (LOD) as low as 4.9 nM. Simulations and modelling based on time-dependent density functional theory (TD-DFT) reveal the chiral mechanism of L/D-cys capped CdSe NPLs. The presented CD-based sensing system illustrates an alternative possibility of using chiral CdSe NPLs as competitive chiral sensors for heavy metal ion detection.

SCI ; EI

英语

第一 ; 通讯

Shenzhen Science and Technology Innovation Commission[KQJSCX20170726145748464] ; Shenzhen Science and Technology Innovation Commission[JCYJ20150930160634263] ; Shenzhen Science and Technology Innovation Commission[JCYJ20170302142433007] ; Shenzhen Science and Technology Innovation Commission[JCYJ20170818103918295] ; Shenzhen Science and Technology Innovation Commission[KQTD2015071710313656]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000468868200056

ROYAL SOC CHEMISTRY

20192106968487

Amino acids ; Chemical detection ; Density functional theory ; Heavy metals ; II-VI semiconductors ; Ligands ; Metal ions ; Selenium compounds ; Stereochemistry

Metallurgy and Metallography:531 ; Metallurgy:531.1 ; Chemistry:801 ; Physical Chemistry:801.4 ; Organic Compounds:804.1 ; Probability Theory:922.1

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Univ Bordeaux, CNRS, ICMCB, UMR 5026, F-33608 Pessac, France
3.Shenzhen Univ, Coll Phys & Energy, Shenzhen 518060, Guangdong, Peoples R China
4.Hubei Univ, Sch Mat Sci & Engn, Wuhan 430062, Hubei, Peoples R China
5.Univ Macau, Inst Appl Phys & Mat Engn, Ave Univ, Taipa, Macao, Peoples R China
6.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
7.Chinese Univ Hong Kong, Sch Sci & Engn, Shenzhen 518172, Guangdong, Peoples R China

Wang, Xiongbin,Hao, Junjie,Cheng, Jiaji,et al. Chiral CdSe nanoplatelets as an ultrasensitive probe for lead ion sensing[J]. Nanoscale,2019,11(19):9327-9334.

Wang, Xiongbin.,Hao, Junjie.,Cheng, Jiaji.,Li, Junzi.,Miao, Jun.,...&Chen, Rui.(2019).Chiral CdSe nanoplatelets as an ultrasensitive probe for lead ion sensing.Nanoscale,11(19),9327-9334.

Wang, Xiongbin,et al."Chiral CdSe nanoplatelets as an ultrasensitive probe for lead ion sensing".Nanoscale 11.19(2019):9327-9334.