通过模板法制备了强表面增强拉曼散射(SERS)活性的“球加片”Au/Ag纳米结构阵列,并利用这种纳米衬底对PCB-77分子的SERS光谱进行了研究.结果表明,尽管该纳米结构能够检测到PCB-77分子的SERS特征峰,但信噪比低.利用癸烷硫醇中的巯基与贵金属之间相互作用,实现了癸烷硫醇分子对纳米结构表面的功能化修饰,研究发现此时PCB-77分子的SERS光谱质量得到了明显改善.并且,这种“球加片”衬底的癸烷硫醇分子最优修饰时间为36h,利用经36h修饰后的纳米衬底,极大地提高了PCB-77的SERS光谱特征峰的强度.
参考文献
| [1] | Chu Shaogang,Xu Xiaobai,Tong Yiping.Transport and distribution of polychlorinated biphenyls in a pollution area[J].Acta Scientiae Circumstantiae (环境科学学报),1995,15(4):423-431 (in Chinese). |
| [2] | Ross G.The public health implications of polychlorinated biphenyls (PCBs) in the environment[J].Ecotoxic.Environ.Safe,2004,59:275-291. |
| [3] | Pitarch E,et al.Rapid multiresidue determination of organochlorine and organo-phosphorus compounds in human serum by solid-phase extraction and gas chromatography coupled to tandem mass spectrometry[J].Anal.Bioanal.Chem.,2003,376:189-197. |
| [4] | Deng Q L,Li H,et al.Aromatic compounds separation and detection by tandem gas chromatography and photoionization ion mobility spectrometry[J].Chinese Journal of Quantum Electronics (量子电子学报),2011,28:12-18 (in Chinese). |
| [5] | Hong J E,Pyo H,Park S,et al.Determination of hydroxyl-PCBs in urine by gas chromatography/mass spectrometry with solid-phase extraction and derivatization[J].Anal.Chim.Acta,2005,531:249-256. |
| [6] | Zheng R S,Lu Y H,et al.Recent progress of research on surface plasmon resonance sensors[J].Chinese Journal of Quantum Electronics (量子电子学报),2008,25:657-664 (in Chinese). |
| [7] | Moskovits M.Surface-enhanced spectroscopy[J].Rev.Mod.Phys.,1985,57:783-826. |
| [8] | Wang Y,Li Y S,et al.Surface-enhanced Raman scattering of some water insolubie drugs in silver hydrosols[J].Spectrochim.Acta A,2003,59:589-594. |
| [9] | Leyton P,Cordova I,Lizama-Vergara P A,et al.Humic acids as molecular assembles in the surface-enhanced Raman scattering detection of polycyclic aromatic hydro-carbons[J].Vibrational Spectroscopy,2008,46:77-81. |
| [10] | Guerrini L,Garcia-Ramos J V,et al.Sensing polycyclic aromatic hydrocarbons with dithiocarbamatefunctionalized Ag nanoparticles by surface-enhanced Raman scattering[J].Analytical Chemistry,2009,81:953-960. |
| [11] | Kottmann J P,Smith D R,Schultz S.Plasmon resonances of silver nanowires with a nonregular cross section[J].Phys.Rev.B,2001,64(23):235402-1-235402-10. |
| [12] | Bantz K C,Haynes C L.Surface-enhanced Raman scattering detection and discrimination of polychlorinated biphenyls[J].Vibrational Spectroscopy,2009,50:29-35. |
| [13] | Stiles P L,Dieringer J A,et al.Surface-enhanced Raman spectroscopy[J].Annu.Rev.Anal.Chem.,2008,1:20.1-20.26. |
| [14] | Linda S J,Charles T V.Sticking probabilities in adsorption from liquid solutions:alkylthiols on gold[J].Phys.Rev.Lett.,2000,84(22):5164-5167. |
| [15] | Maier S A.Plasmonics:Fundamentals and Applications[M].New York:Springer,2007:159-162. |
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