| 光谱学与光谱分析 |
|
|
|
|
|
| Preparation and Characterization of Quantum Dots with Polyacrylic Acid Modified Method in Water-Soluble Core-Shell Structure |
| ZHAO Bin1, ZHAO Su-qing1, CAI Yan-fei2*，PENG Wei1, ZHANG Kun1, LIU Duan1 |
1. Faculty of Chemical Engineering and Light Industry of Guangdong University of Technology，Guangzhou 510006, China
2. College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China |
|
|
|
|
Abstract Cd-Zn quantum dots (QDs) modified with thiourea was firstly prepared asthe cores, then the cores were coated with polyacrylic acid with PVP K-30 as the stabilizer in water-soluble reaction system. The water-soluble fluorescence QDs were the same size and stable. The water-soluble QDs were characterized by fluorescence emission spectra, infrared spectra (IR), and transmission electron microscopy(TEM). The effects of the nuclear QDs with different concentration under polyacrylic acid solution on the optical properties of QDs were also studied. The results showed that the nanoparticles of QDs modified with polyacrylic acid have more uniform particle distribution, and the main peak was blueshifted from 548 to 448 nm. CO and C—O stretching vibration absorption peaks were 2 092.8 and 1 384.3 cm-1 in infrared spectra, amide bond of CO stretching vibration absorption peaks were 1 644.5 cm-1. The best concentration of nuclear QDs under polyacrylic acid solution was 2.67 mg·mL-1. QDs prepared by this simple method have good stability and strong fluorescence intensity. The approach introduced in this paper will lay a solid foundation for biological markers and applications of QDs in the future.
|
|
Received: 2010-12-07
Accepted: 2011-03-25
|
|
|
|
Corresponding Authors:
CAI Yan-fei
E-mail: yanfeicai@scau.edu.cn
|
|
[1] Bruehez M P, Weiss S, Alivisatos A P, et al. Science, 1998, 281: 2013.
[2] XIE Ying, XU Jing-juan, YU Jun-sheng, et al(谢 颖, 徐静娟, 于俊生, 等). Chin. J. Inorg. Chem.(无机化学学报), 2004, 20(6): 663.
[3] YANG Fang-fang, YU Jun-sheng, XIE Ying(杨芳芳, 于俊生, 谢 颖). Chin. J. Inorg. Chem.(无机化学学报), 2008, 24(7): 1142.
[4] Deng Dawei, Yu Junsheng, Pan Y, Colloid. Inter. Sci., 2006, 299: 225.
[5] DENG Da-wei, YU Jun-sheng(邓大伟,于俊生). Chin. J. Inorg. Chem.(无机化学学报), 2008, 24(5): 701.
[6] Chan W C W, Nie S. Science, 1998, 281: 2016.
[7] Han M Y, Gao X H, Nie S, et al. Nature Biotechnol, 2001, 19: 631.
[8] Jaiswal J K, Mattoussi H, Maum J M, et al. Nature Biotechnol, 2003, 21: 47.
[9] Greenham N C, Peng X G, Alivisatos A P. Phys. Rev. B, 1996, 54: 17628.
[10] Ji X J, Zheng J Y, Roger M L, et al. J. Phys. Chem. B, 2005, 109: 3793.
[11] ZHUANG Jia, LIU Meng, LIU Han-bin(庄 稼, 刘 猛, 刘汉斌). Science China: Chemistry(中国科学: 化学), 2010, 40(4): 322.
[12] ZHANG Qing-bin, SONG Kai, KONG Xiang-gui, et al(张庆彬, 宋 凯, 孔祥贵, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2010, 30(2): 435.
[13] YOU Xiao-gang, HE Rong, GAO Feng, et al(尤晓刚, 贺 蓉, 高 峰, 等). Acta Chimica Sinica(化学学报), 2007, 65(6): 561.
[14] ZHANG Bing-bo, GONG Xiao-qun, LIN Ting-ting, et al(张兵波, 宫晓群, 林婷婷, 等). Chemical Journal of Chinese Universites(高等学校化学学报), 2009, 30(2): 246.
[15] Gao X, Cui Y, Levenson R M, et al. Nature Biotechnology, 2004, 22: 969.
[16] ZHAO Bin, ZHAO Su-qing, ZHANG Kun, et al(赵 斌, 赵肃清, 张 焜, 等). Acta Chimica Sinica(化学学报), 2011, 69(7): 777. |
| [1] |
TENG Yuan-jie, WEI Qi-zhen, LIU Wen-han, LIU Jiang-mei, NIE Yong-hui, LI Pan. Cy3-Labeled Aptamer Combined with Surface-Enhanced Raman Scattering Using for Specific Detection of Trace Acetamiprid[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(08): 2462-2467. |
| [2] |
LI Yuan-xi1, 3, 5, CHEN Xi-yun1, 2* ，LUO Da1, 4, 5, LI Bo-ying1, WANG Shu-ren1, ZHANG Li-wei1. Effects of Cuprum Stress on Position of Red Edge of Maize Leaf Reflection Hyperspectra and Relations to Chlorophyll Content[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(02): 546-551. |
| [3] |
YU Jiang-ping1, LI Chun2, YI Wen-ting1, JIN Biao-bing2, LIU Yun-fei1, JIANG Ling1*. Temperature Dependence of Terahertz Spectra of Amino Acid[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(02): 386-393. |
| [4] |
SONG Yu-dong1, 3, CAO Gang1, 2, 3, XU Shou-qiang1, 2, 3, MA Tian-wu4, CHANG Fu-cheng4, ZHOU Yue-xi1, 3*, HE Xu-wen2, ZHANG Li-ping2. Spectral Analysis for the Identification of Anion Exchange Membrane Pollutants in Butyl-Acrylate Wastewater[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(09): 2832-2837. |
| [5] |
YIN Xiao-ying, ZHONG You-quan, JIANG Yi-fan, LUO Yong-ming* . The Spectroscopy Analysis of Intermolecular Interaction Between the Template Molecule and Functional Monomer Before Polymerization [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(08): 2211-2214. |
| [6] |
CHEN Jun1, 2, 3，ZHOU Guan-hua4*，WEN Zhen-he1, 2，MA Jin-feng5，ZHANG Xu6，PENG Dan-qing4，YANG Song-lin3 . Study on Quantitative Model for Suspended Sediment Concentration in Taihu Lake [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(01): 137-141. |
| [7] |
YANG Xiao-zhan1,TANG Chong-min1,LIU Zi-li2,YAO Yong-yi1,LI Rui-xia1,WU Da-cheng1*. Measurement and Analysis of Nanometer Particles of Silica and Carbon Black by Diffuse Reflection FTIR Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(02): 291-294. |
| [8] |
LIN Liang-wu, TANG Yuan-hong*,ZHANG Wei. X-Ray Absorption Spectroscopy Study on Nanowires and Nanotubes of Carbon and Silicon[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(03): 571-576. |
| [9] |
CHAI Shu-ling, YANG Li-yan, LI Xiao-meng, TAN Hui-min*. Studies on the Ultraviolet Spectra of PU/PA Composite Emulsions[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(05): 757-760. |
| [10] |
WEN Chao1，2, LI Xun2, SUN De-yu2, GUAN Jin-qing2, LIU Xiao-xin2, LIN Ying-rui2 , TANG Shi-ying2, ZHOU Gang2, LIN Jun-de2, JIN Zhi-hao1 . Raman Spectrum of Nano-Graphite Synthesized by Explosive Detonation [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(01): 54-57. |
|
|
|
|
