全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电化学  2005 

胞嘧啶吸附在粗糙金电极上的表面增强拉曼光谱

, PP. 304-307

Keywords: 胞嘧啶,循环伏安法,金电极,表面增强拉曼光谱

Full-Text   Cite this paper   Add to My Lib

Abstract:

应用电化学伏安法和表面增强拉曼光谱(SERS)研究在-1.0V~0V电位区间内胞嘧啶于粗糙金电极表面的吸附行为.结果表明,在本实验的电位区间,胞嘧啶是以其N3位垂直吸附在粗糙金电极表面的.在负电位区间环呼吸振动模的强度出现极大值,与其它振动模强度相比,作者认为电磁场的增强和电荷转移均使该谱峰的拉曼信号增强.胞嘧啶的环呼吸振动频率随着电位负移而红移,这意味着它与金电极的成键作用减弱.同时也表明SERS谱可用于研究生物分子在金属电极表面的吸附行为.

References

[1]  Tian Z Q,Ren B.Adsorption and reaction at electro-chem ical interfaces as probed by surface-enhanced Ra-m an spectroscopy[J].Ann.Rev.Phys.Chem.,2004,55:197.
[2]  Tian Z Q,Ren B,W u D Y.Surface-enhanced Ram anscattering:From nob le to transition m etals and fromrough surfaces to ordered nanostructures[J].J.Phys.Chem.B,2002,106:9 403.
[3]  Cao Y C,Jin R,M irk in C A.Nanopartic les w ith Ra-m an spectroscop ic fingerprints for DNA and RNA detec-tion[J].Sc ience,2002,297:1 536.
[4]  Zhu Ke-rong(朱克荣),Cao Zuo-liang(曹卓良),ChenHuo-p in(陈霍平),et al.Surface-enhanced Ram anspectra of cytosine adsorbed on a silver electrode[J],Ch inese Journal of L ight Scattering,1995,7:215.
[5]  Ataka K,OsawaM.In situ infrared study of cytosine ad-sorption on gold electrodes[J].J.E lectroanal.Chem.,1999,460:188.
[6]  Dem ers LM,Ostb lom M,ZhangH,et al.Therm al de-sorption behavior and b ind ing properties of DNA basesand nuc leosides on gold[J].J.Am.Chem.Soc.,2002,124:11 248.
[7]  W and lowsk i T,Lampner D,L indsay S M.Structureand stab ility of cytosine ad layers on Au(111):an in-si-tu STM study[J].J.E lectroanal.Chem.,1996,404:215.
[8]  Tao N J,DeRose J A,L indsay S M.Self-assemb ly ofmolecu lar superstructures stud ied by in situ scann ingtunneling m icroscopy:NA bases on gold(111)[J].J.Phys.Chem.,1993,97:910.
[9]  Gao P,W eaver M J.M etal-adsorbate vibrational fre-quenc ies as a probe of surface bond ing:halides andpseudohalides at gold electrodes[J].J.Phys.Chem.,1986,90:4 057.
[10]  Holm lin R E,Dand liker P J,Barton J K.Chargetransfer through the DNA base stack[J].Angew.Chem.Int.Ed.Engl.,1997,36:2 715.
[11]  Zhang R Y,Pang D W,Zhang Z L,et al.Investiga-tion of ordered ds-DNA monolayers on gold electrodes[J].J.Phys.Chem.B,2002,106:11 233.
[12]  W u D Y,Hayash iM,Tian Z Q.Theoretical d ifferenti-al Ram an scattering cross-sections of totally-symm etricvibrational modes of free pyrid ine and pyrid ine-m etalc luster comp lexes[J].Spectroch im.Acta A,2004,60:137.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133