采用水相合成法合成了Mn2+掺杂CdTe量子点(Mn:CdTe d-dots).通过荧光光谱(PL)分析、原子力显微镜(AFM)和X线粉末衍射(XRD)分析、电子能谱(EDS)分析对产物进行了表征.研究了反应时间、温度、Mn2+掺杂量、pH值及巯基丙酸(MPA)与镉离子的比例对掺杂量子点发光性能的影响.结果表明:反应时间、温度、pH、MPA与Cd2+的比例对量子点的粒径大小、粒径的分布和粒子的生长速度均有影响；Mn2+的掺杂主要影响量子点的发光性能及热稳定性.本实验通过在CdTe量子点中掺杂Mn2+,进一步改良CdTe的发光性能及热稳定性,扩大了量子点的应用范围.
[1] 杨旭, 周宏, 沈彬, 张玲, YANG Xu, ZHOU Hong, SHEN Bin, ZHANG Ling. ZnS:Co半导体量子点的制备及其光电化学性质 [J]. 物理化学学报 2010.
[2] 杨卫海, 李万万, 孙康, YANG Wei-Hai, LI Wan-Wan, SUN Kang. 水热法合成巯基乙胺稳定的CdTe量子点 [J]. 高等学校化学学报 2008.doi:10.3321/j.issn:0251-0790.2008.04.005
[3] Chan, WC, Nie, S. Quantum dot bioconjugates for ultrasensitive nonisotopic detection (see comments) [J]. Science 1998, 5385(5385).
[4] 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(1).
[5] Austin M. Derfus, Warren C. W. Chan, Sangeeta N. Bhatia. Probing the Cytotoxicity of Semiconductor Quantum Dots [J]. Nano letters 2004, 1(1).
[6] X. Michalet, F. F. Pinaud, L. A. Bentolila, J. M. Tsay, S. Doose, J. J. Li, G. Sundaresan, A. M. Wu, S. S. Gambhir, S. Weiss. Quantum Dots for Live Cells, in Vivo Imaging, and Diagnostics [J]. Science 2005, 5709(5709).
[7] Cai WB, Shin DW, Chen K, Gheysens O, Cao QZ, Wang SX, Gambhir SS, Chen XY. Peptide-labeled near-infrared quantum dots for imaging tumor vasculature in living subjects [J]. Nano letters 2006, 4(4).
[8] Narayan Pradhan, Xiaogang Peng. Efficient and Color-Tunable Mn-Doped ZnSe Nanocrystal Emitters: Control of Optical Performance via Greener Synthetic Chemistry [J]. Journal of the American Chemical Society 2007, 11(11).
[9] Yang P., Xu D., Yuan D., Song C., Zhou G., Lu M.. The effect of Co2+ and Co3+ on photoluminescence characteristics of ZnS nanocrystallines [J]. The journal of physics and chemistry of solids 2001, 6(6).
[10] 张立德, 牟季美. 纳米材料和纳米结构 [M]. 北京:科学出版社 2002.
[11] HERMAN M A, SITTER H. Molecular beam epitaxy:fundamentals and current status, second revised and updated edition [M]. New York:springer-verlag 1996.
[12] Pradhan N, Battaglia DM, Liu YC, Peng XG. Efficient, stable, small, and water-soluble doped ZnSe nanocrystal emitters as non-cadmium biomedical labels [J]. Nano letters 2007, 2(2).
