Abstract:Stable PAMAM(polyamidoamine) capped ZnS (zinc sulfide) QDs (quantum dots) were prepared and characterized with UV-Vis spectrum and PL(photoluminescence) emission spectrum on the base of coordination of Zn2+ ions with PAMAM dendrimers. The results show that Zn2+ ions coordinated with N atoms of PAMAM ligand and the saturated coordinating time is about 6 h; PAMAM capped ZnS QDs emitted strong blue light under the irradiation of UV light at the wavelength of 365 nm, and the PL emission peak is at about 500 nm. Finally, the prepared PAMAM capped ZnS QDs were applied in the fluorescent labeling of latent fingerprints on tinfoils; Latent fingerprints emitting strong blue light and were successfully detected with good resolving rate.
[1] Jin S K, Kwang J C, Thanh H T, et al. Journal of Colloid and Interface Science, 2011, 353(2): 363. [2] Menzel E R, Savoy S M, Ulvick S J, et al. Journal of Forensic Science, 2000, 45(3): 545. [3] Menzel E R, Takatsu M, Murdock R. H, et al. Journal of Forensic Science, 2000, 45(4): 770. [4] Bouldin K K, Menzel E R, Takatsu M, et al. Journal of Forensic Science, 2000, 45(6): 1239. [5] Jessirie D, Hilton K, Amanda V E. Forensic Science International, 2009, 187: 97. [6] JIN Yu-juan, LUO Yun-jun, XU Guo-zhi, et al(靳玉娟, 罗运军, 许国志, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析). 2011, 31(12): 3311. [7] Jin Y J, Luo Y J, Li G P, et al. Forensic Science International,2008, 179(1): 34. [8] CONG Ri-min, LUO Yun-jun, JIN Yu-juan, et al(丛日敏, 罗运军, 靳玉娟, 等). Acta Chinica Sinica(化学学报),2007, 65(21): 3419. [9] JIN Yu-juan, LUO Yun-jun, LI Guo-ping, et al(靳玉娟, 罗运军, 李国平, 等), Transactions of Beijing Institute of Technology(北京理工大学学报), 2010, 30(7): 97. [10] YANG Rui-qin, ZHOU Qing-ying, WANG Yuan-feng, et al(杨瑞琴,周庆颖,王元凤,等). Chinese Journal of Inorganic Chemistry(无机化学学报),2008,24(11):1874. [11] YANG Rui-qin, QIAN Wei-jie, ZHAO Ke, et al(杨瑞琴,钱伟杰,赵 科,等). Journal of Chinese People’s Public Security University(中国人民公安大学学报),2008,4:1. [12] Suarez I J, Rosal R, Rodriguez A, et al. Trends in Analytical Chemsitry, 2011, 30(3): 492. [13] Larson C L, Tucker S A. Applied Spectroscopy, 2001, 55(6): 679. [14] Hedden R C, Bauer B J, Smith A P, et al. Polymer,2002, 43: 5473. [15] Yu W W, Qu L H, Guo W Z, et al. Chemical Material,2003, 15: 2854. [16] JIN Yu-juan, LUO Yun-jun, LI Guo-ping, et al(靳玉娟, 罗运军, 李国平, 等). Imaging Science and Photochemistry(影像科学与光化学), 2011, 29(2): 194.