Preparation of CdTe Quantum Dots Modified Wafer and Its Application in Pb2+ Detection

SUN Lin; ZHANG Qiu-yan; LI Zhen-zhen; PAN Yu-jin; WANG Qing; ZHAO Qiang

doi:10.3788/fgxb20153603.0339

您当前的位置：

首页 >

文章列表页 >

Preparation of CdTe Quantum Dots Modified Wafer and Its Application in Pb²⁺Detection

更新时间：2020-08-12

- Preparation of CdTe Quantum Dots Modified Wafer and Its Application in Pb²⁺Detection
- Chinese Journal of Luminescence Vol. 36, Issue 3, Pages: 339-347(2015)
- 作者机构：
  
  四川大学化学工程学院,四川成都,610065
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153603.0339
  CLC： O657.39
- Received：24 November 2014，
  
  Revised：06 January 2015，
  
  Published Online：12 January 2015，
  
  Published：03 March 2015
- 稿件说明：
移动端阅览
孙琳, 张秋艳, 李珍珍等. CdTe量子点功能化玻片的制备及其对Pb2+浓度的检测[J]. 发光学报, 2015,36(3): 339-347

SUN Lin, ZHANG Qiu-yan, LI Zhen-zhen etc. Preparation of CdTe Quantum Dots Modified Wafer and Its Application in Pb2+ Detection[J]. Chinese Journal of Luminescence, 2015,36(3): 339-347
孙琳, 张秋艳, 李珍珍等. CdTe量子点功能化玻片的制备及其对Pb2+浓度的检测[J]. 发光学报, 2015,36(3): 339-347 DOI： 10.3788/fgxb20153603.0339.

SUN Lin, ZHANG Qiu-yan, LI Zhen-zhen etc. Preparation of CdTe Quantum Dots Modified Wafer and Its Application in Pb2+ Detection[J]. Chinese Journal of Luminescence, 2015,36(3): 339-347 DOI： 10.3788/fgxb20153603.0339.

摘要

通过羟基化和氨基硅烷化处理

得到表面接枝氨基的玻片载体。水相合成巯基乙酸修饰的CdTe量子点(CdTe-TGA)

采用EDC/NHS活化反应

将量子点偶联到氨基化玻片表面

制备出具有荧光性能的功能化玻片。考察了量子点与EDC的量比、活化时间、偶联温度以及偶联时间对偶联效果的影响。结果表明

在量子点与EDC的量比为1:30、活化时间1 h、偶联温度30 ℃、偶联时间4 h条件下获得的功能化玻片具有最佳的荧光性能。将该条件下制备的功能化玻片用于水溶液中Pb

的浓度检测

得到玻片相对荧光猝灭强度随Pb

浓度变化的线性曲线

线性范围为1.010

-9

~4.010

-8

molL

-1

检出限为3.810

-9

molL

-1

且具有良好的选择性。该方法可以灵敏而准确地检测Pb

浓度。

Abstract

A new method using wafer modified by CdTe quantum dots to detect the concentration of Pb

was discussed in this paper. The surface of glass wafer was modified by means of hydroxylation and aminosilanization to obtain amino-modified slide. The thioglycolic acid-capped CdTe quantum dots synthesized in aqueous phase were successfully coupled on the surface of amino-modified slide by using EDC/NHS activation reaction. Some influence factors were discussed

such as molar ratio of QDs/DEC

activation time

coupling temperature and coupling time. The results show that the functional wafer with QDs/DEC molar ratio of 1:30

activating time of 1 h

reacting time of 4 h

and reacting temperature of 40 ℃ has the best fluorescence performance. The obtained wafers were successfully used to measure the concentration of Pb

in aqueous solution. The quenched fluorescence intensity of functional wafer is linearly proportional to the concentration of Pb

between 1.010

-9

and 4.010

-8

molL

-1

with a detection limit of 3.810

-9

molL

-1

. Good selectivity is also proved by interfering ion experiment. This proposed method can be used to detect Pb

sensitively and accurately.

关键词

Keywords

references

Fodor S P A, Rava R P, Huang X H C, et al. Multiplexed biochemical assays with biological chips [J]. Nature, 1993, 364:555-556.

Southern E M. DNA chips: Analysing sequence by hybridization to oligonucleotides on a large scale [J]. Trends Genet., 1996, 12(3):110-115.

Robert S, Jeff L, Miguel P A, et al. Monitoring genome-wide expression in plants [J]. Curr. Opin. Biotechnol., 2000, 11(2):162-167.

Wang Y. Survey of biochip technology and its application [J]. Sci. Educ.(科学教育), 2010, 16(1):91-93 (in Chinese).

Watson S J, Huda A. Gene chips and arrays revealed: A primer on their power and their uses [J]. Biol. Psychiat., 1999, 45(5):533-543.

Wang Z K, Lei W S, Chang J. Research status of biochip and its application in the biomedical field [J]. Med. J. Chin. PLA (解放军医学杂志), 2011, 36(5):545-546 (in Chinese).

Alberto P. Biochips: Technologies and applications [J]. Mater. Sci. Eng. C, 2008, 28:459-508.

Templin M F, Stoll D, Schrenk M, et al. Protein microarray technology [J]. Drug. Discov. Today, 2002, 7(15):815-822.

Zammatteo N, Jeanmart L, Hamels S, et al. Comparison between different strategies of covalent attachment of DNA to glass surfaces to build DNA microarrays [J]. Anal. Biochem., 2000, 280(1):143-150.

Cheung V G, Morley M, Aguilar F, et al. Making and reading microarrays [J]. Nat. Genet., 1999, 21:15-19.

Zhao J Y, Li Y H, Guo H Q, et al. Relative surface density and stability of the amines on the bio-chip [J]. Chin. J. Anal. Chem.(分析化学), 2006, 34(9):1234-1238 (in Chinese).

Campas M, Katakis I. DNA biochip arraying, detection and amplification strategies [J]. Trends Anal. Chem., 2004, 23(1):49-62.

Chen J, Sun J F, Guo L, et al. Determination of lead ion based on quenching of room temperature phosphorescence of Mn-doped ZnS quantum dots [J]. Chin. J. Anal. Chem.(分析化学), 2012, 40(11):1680-1685 (in Chinese).

Tang A W, Teng F, Wang Y M, et al. Luminescent characteristics and applied research progress of Ⅱ-Ⅵ semiconductor quantum dots [J]. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2005, 20(4):302-308 (in Chinese).

Liu S Y, Wang Y L, Yang K. Determination of copper ion by near-infrared-emitting CdSeTe quantum dots [J]. Chin. J. Lumin.(发光学报), 2014, 35(2):257-262 (in Chinese).

Yan Z Y, Pang D W, Shao X F, et al. Determination of trace amount of copper in the Chinese herbal medicine by fluorescence quenching of quantum dots [J]. J. Chin. Pharm. Univ.(中国药科大学学报), 2005, 36(3):230-233 (in Chinese).

Liang J G, Ai X P, He Z K, et al. Functionalized CdSe quantum dots as selective silver ion chemodosimeter [J]. Analyst, 2004, 129:619-622.

Chen B, Ying Y, Zhou Z T, et al. Synthesis of novel nanocrystals as fluorescent sensors for Hg2+ ions [J]. Chem. Lett., 2004, 33:1608-1609.

Zhong W Y, Liang J R, Yu J S. Systematic study of the interaction of cobalt ions with different-sized CdTe quantum dots [J]. Spectrochim. Acta, Part A, 2009, 74(3):603-606.

Ruedas-Rama M J, Hall E A. Azamacrocycle activated quantum dot for zinc ion detection [J]. Anal. Chem., 2008, 80(21):8260-8268.

Qin J J, Cao L X, Liu W, et al. ZnS:Mn/SiO2 quantum dots modified with PVP as fluorescent sensor for Pb2+ ions in sea water [J]. Chin J. Lumin.(发光学报), 2014, 35(7):858-865 (in Chinese).

Cai Z X, Shi B Q, Zhao L, et al. Ultrasensitive and rapid lead sensing in water based on environmental friendly and high luminescent L-glutathione-capped-ZnSe quantum dots [J]. Spectrochim. Acta, Part A, 2012, 97:909-914.

Ren J, Chen H L, Ren C L, et al. L-cysteine capped CdSe as sensitive sensor for detection of trace lead ion in aqueous solution [J]. Mater. Res. Innov., 2010, 14(2):133-137.

Luan W L, Yang H W, Wan Z, et al. Mercaptopropionic acid capped CdSe/ZnS quantum dots as fluorescence probe for lead (Ⅱ) [J]. J. Nanopart. Res., 2012, 14(3):762-769.

Wu P, Li Y, Yan X. CdTe quantum dots (QDs) based kinetic discrimination of Fe2+ and Fe3+, and CdTe QDs-fenton hybrid system for sensitive photoluminescent detection of Fe2+ [J]. Anal. Chem., 2009, 81(15):6252-6257.

Wu H M, Liang J G, Han H Y. A novel method for the determination of Pb2+ based on the quenching of the fluorescence of CdTe quantum dots [J]. Microchim. Acta, 2008, 161(1-2):81-86.

Zhong W Y, Zhang C, Li H. Highly sensitive detection of lead (Ⅱ) ion using multicolor CdTe quantum dots [J]. Microchim. Acta, 2012, 176(1-2):101-107.

Joong H M, Jung U C, Jin H K, et al. Self-assembly of non-linear optical chromophores through ionic interactions [J]. J. Mater. Chem., 1996, 6(3):365-368.

Joong H M, Ji W S, Sang Y K, et al. Formation of uniform aminosilane thin layers: An imine formation to measure relative surface density of the amine group [J]. Langmuir, 1996, 12(20):4621-4624.

Zhang X L, Li Y R, Pan Y Y, et al. Synthesis of water-soluble CdTe quantum dots and its influencing factors [J]. Chem. Res. Appl.(化学研究与应用), 2012, 24(5):666-671 (in Chinese).

Views

158

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Enhanced Performance of Pure-red Perovskite Light-emitting Diodes by Surface Modification with Guanidine Acetate

Research Progress on Regulation of Lattice Environment and Luminescence for Mn⁴⁺/Pb²⁺ Doped LaAlO₃ Phosphors by Unit Co-substitution

Enoxacin Detection Based on CdTe Quantum-dot-based OFF-ON Fluorescent Probe

Growth of ZnO Single Crystal and BeZnO Alloy and Ultraviolet Detector

Surface Treatment of SrAl₂O₄: Eu²⁺, Dy³⁺ Phosphors by Combustion Method

Related Author

ZHANG Xingwang

JIANG Ji

SHI Mingming

ZHU Qi

LI Siyuan

LU Siyu

ZHAO San-hu

WANG Cong-cong

Related Institution

Key Lab of Semiconductor Materials Science， Institute of Semiconductors， Chinese Academy of Sciences

Center of Materials Science and Optoelectronics Engineering， University of Chinese Academy of Sciences

Key Laboratory for Anisotropy and Texture of Materials（Ministry of Education） & School of Materials Science and Engineering， Northeastern University

Department of Chemistry, Xinzhou Teachers University

Xichang Satellite Launch Center, Xichang

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰