Abstract:Silver nanocubes were synthesized by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone) based on the report by Xia’s group.Silver nanocubes were immobilized on silicon wafers by self-assembly processes.SERS activity of silver nanocubes was detected by using pyridine and SCN- respectively as probe molecules.The preliminary results show that the Raman intensities of pyridine and SCN- adsorbed at silver nanocubes were enhanced considerably, indicating that silver nanocubes can be used as a good SERS substrate.On the other hand, SERS combined with the probe molecule method can be used to characterize the optical property of silver nanocubes.
[1] Metraux G S, Cao Y C, Jin R C, et al.Nano.Lett., 2003, 3(4): 519. [2] Silvert P, Herrera-Urbina R, Tekaia-Elhsissen K.J.Mater.Chem., 1997, 7(2): 293. [3] Sun Y G, Xia Y N.Analyst, 2003, 128: 686. [4] Mohamed M B, Volkov V V, Link S, et al.Chem.Phys.Lett., 2000, 317: 517. [5] Link S, El-sayed M A.Annu.Rev.Phs.Chem., 2003, 54: 331. [6] TIAN Zhong-qun(田中群).China Basic Science(中国基础科学), 2001, (3):4. [7] Liao P F, Bergman J G, Chemla D S, et al.Chem.Phys.Lett., 1981, 82: 355. [8] Hulteen J C, Van Duyne R P, et al.J.Phys.Chem.B, 1999, 103: 3854. [9] Green M, Liu F M.J.Phys.Chem.B, 2003, 107: 13015. [10] Freeman R G, Grabar K C, et al.Science, 1995, 267: 1629. [11] YAO Jian-lin, PAN Gu-ping, XUE Kuan-hong, et al(姚建林,潘谷平,薛宽宏,等).Chinese Journal of Electrochemistry(电化学),1999,5(4): 371. [12] Tao A, Kim F, Hess C, et al.Nano.Lett., 2003, 3(9): 1229. [13] Sun Y G, Xia Y N.Science, 2002, 298: 2176. [14] QIU Li-qun, GU Ren-ao(仇立群,顾仁敖).Spectroscopy and Spectral Analysis(光谱学与光谱分析),2004,24(5): 547. [15] KE Wei-zhong, WU Jian-zhong(柯惟中,吴缄中).Spectroscopy and Spectral Analysis(光谱学与光谱分析),2004,24(5): 551. [16] WU De-yin, CAO Zhi-ji, REN Bin, et al(吴德印,曹志霁,任 斌, 等).Chinese Journal of Light Scattering(光散射学报),2001,13(4): 199. [17] Mayer P, Holze R.Sur.Sci., 2003, 522: 55. [18] Wu D Y, Ren B, Xiong Y X, et al.J.Phys.Chem.A, 2002, 106: 9042. [19] Tielens F, Saeys M, Geerlings P, et al.J.Phys.Chem.A, 2002, 106: 1450. [20] Gonnissen D, Langenaeker W, Hubin A, et al.J.Raman Spectrosc., 1998, 29: 1031. [21] GU Ren-ao, CAO Wen-dong, CAO Pei-gen, et al(顾仁敖,曹文东,曹佩根, 等).Spectroscopy and Spectral Analysis(光谱学与光谱分析),2001,21(3): 308.