以氯化镉、硒粉为前驱体,巯基乙酸(TGA)为稳定剂,制备了羧基CdSe量子点,并研究了其荧光特性与影响因素.结果表明,反应温度、反应时间与反应体系的pH值是影响量子点生长和荧光性能的主要因素.制备羧基CdSe量子点的最优条件为反应温度90℃、pH＝11、n(Cd):n(Se)＝2:1.制备的羧基CdSe量子点的粒径随反应时间的延长而逐渐增大,量子点荧光稳定性好,荧光强度高,光漂白时间延长.
参考文献
| [1] | Kim S;Lim YT;Soltesz EG;De Grand AM;Lee J;Nakayama A;Parker .Near-infrared fluorescent type II quantum dots for sentinel lymph node mapping[J].Nature biotechnology,2004(1):93-97. |
| [2] | 俞英,梁耀珍,赖艳,曹玉娟.3-巯基丙酸修饰的CdSe/ZnS量子点的合成及测定牛血清白蛋白的研究[J].分析科学学报,2009(01):59-62. |
| [3] | Irrgang, J;Ksienczyk, J;Lapiene, V;Niemeyer, CM .Analysis of Non-Covalent Bioconjugation of Colloidal Nanoparticles by Means of Atomic Force Microscopy and Data Clustering[J].Chemphyschem: A European journal of chemical physics and physical chemistry,2009(9/10):1483-1491. |
| [4] | Gao XH;Cui YY;Levenson RM;Chung LWK;Nie SM .In vivo cancer targeting and imaging with semiconductor quantum dots[J].Nature biotechnology,2004(8):969-976. |
| [5] | Khatchadourian R;Bachir A;Clarke SJ;Heyes CD;Wiseman PW;Nadeau JL .Fluorescence intensity and intermittency as tools for following dopamine bioconjugate processing in living cells.[J].Journal of biomedicine & biotechnology,2007(0):70145-70145. |
| [6] | Slaveykova V I;Startchev K;Roberts J et al.Amine and carboxyl quantum dots affect membrane integrity of bacterium cupriavidus metallidurans CH34[J].Environmental Science and Technology,2009,43(13):5117. |
| [7] | Xue XH;Pan J;Xie HM;Wang JH;Zhang S .Fluorescence detection of total count of Escherichia coli and Staphylococcus aureus on water-soluble CdSe quantum dots coupled with bacteria[J].Talanta: The International Journal of Pure and Applied Analytical Chemistry,2009(5):1808-1813. |
| [8] | Huang CP;Liu SW;Chen TM;Li YK .A new approach for quantitative determination of glucose by using CdSe/ZnS quantum dots[J].Sensors and Actuators, B. Chemical,2008(1):338-342. |
| [9] | Ji X;Zheng J et al.(CdSe)ZnS quantum dots and organophosphours hydrolase bioconjugate as biosensor for detection of paraoxon[J].Journal of Physical Chemistry B,2005,109(09):3793. |
| [10] | Z.Adam Peng;Xiaogang Peng .Formation of High-Quality CdTe, CdSe, and CdS Nanocrystals Using CdO as Precursor[J].Journal of the American Chemical Society,2001(1):183-184. |
| [11] | Xiaohui Wang;Yan Li;Yumin Du .Novel Water-Soluble Chitosan Derivatives/Quantum Dots Nanocomposite: Synthesis, Characterization and Photoluminescence Properties[J].Journal of nanoscience and nanotechnology,2009(12):6866-6875. |
| [12] | Zhang, WJ;Chen, GJ;Wang, J;Ye, BC;Zhong, XH .Design and Synthesis of Highly Luminescent Near-Infrared-Emitting Water-Soluble CdTe/CdSe/ZnS Core/Shell/Shell Quantum Dots[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,2009(20):9723-9731. |
| [13] | Chang Qing Zhu;Dan Hua Zhao;Jin Long Chen;Yong Xin Li;Le Yu Wang;Lun Wang;Yun You Zhou;Shu Juan Zhuo;Yu Qin Wu .Application of l-cysteine-capped nano-ZnS as a fluorescence probe for the determination of proteins[J].Analytical and bioanalytical chemistry,2004(3):811-815. |
| [14] | Li J;Hong X;Li D et al.Mixed ligand system of cysteine and thioglycolic acid assisting in the synthesis of highly luminescent water-soluble CdTe nanorods[J].Chemical Communications,2004,15(07):1740. |
| [15] | Han H Y;Sheng Z H;Liang J G et al.A novel method for the preparation of water-soluble and small-size CdSe quantum dots[J].Materials Letters,2006,60(29-30):3782. |
| [16] | 王璐,王德平,黄文旵,宁佳,郁美娟.水相制备硒化镉半导体量子点的荧光性能[J].硅酸盐学报,2005(10):1224-1230. |
| [17] | Jang Eunjoo;Jun Shinae;Chung Youngsu et al.Surface treatment to enhance the quantum efficiency of semiconductor nanocrystals[J].Journal of Physical Chemistry B,2004,108(15):4597. |
| [18] | Chan,WC;Nie,S .Quantum dot bioconjugates for ultrasensitive nonisotopic detection (see comments)[J].Science,1998(5385):2016-2018. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%