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经ORC处理银衬底上核酸碱基的SERS研究
引用本文:张建生,何俊华.经ORC处理银衬底上核酸碱基的SERS研究[J].光子学报,2006,35(9):1341-1344.
作者姓名:张建生  何俊华
作者单位:1. 西安工业学院,西安,710032;陕西师范大学,西安,710062;中国科学院西安光学精密机械研究所,西安,710068
2. 中国科学院西安光学精密机械研究所,西安,710068
摘    要:利用天线共振子模型对银的表面增强喇曼散射(SERS)特性进行了计算和分析.结果显示,银增强因子在近红外的1.38 eV处为最大,达140以上;近紫外3.35 eV、3.90 eV、4.30 eV位置处依次减小,分别为60、48、45;而在可见光区,银增强因子的最大值为70. 在经氧化还原过程(ORC)处理的银片上做了核酸碱基腺嘌呤、尿嘧啶的SERS谱,腺嘌呤的SERS谱虽然存在荧光的影响,但SERS效应明显.尿嘧啶的SERS谱出现4个明锐的峰值,1035 cm-1是所出现的最强的模式,该模式应是尿嘧啶在核酸中存在的SERS环呼吸模式,可作为检测尿嘧啶存在的判定依据.

关 键 词:ORC  腺嘌呤  尿嘧啶  SERS
收稿时间:2005-07-06
修稿时间:2005年7月6日

SERS Effect of Nucleic Acid Alkaline Groups on Argentine Piece Treated by ORC
Zhang Jiansheng,He Junhua.SERS Effect of Nucleic Acid Alkaline Groups on Argentine Piece Treated by ORC[J].Acta Photonica Sinica,2006,35(9):1341-1344.
Authors:Zhang Jiansheng  He Junhua
Institution:1 Xi′an Institute of Technology,Xi′an 710032
2 Shaanxi Normal University,Xi′an 710062
3 Xi′an Institute of Optics and Precision Mechanics,CAS,Xi′an 710068
Abstract:SERS effect of argentine is calculated and analyzed b y use of Antenna Resonance Model.The results show that a maximum enhanced factor is greater than 140 at 1.38eV near infrared, factors are about 60,48 and 45 at 3.35 eV,3.90 eV and 4.30 eV near ultraviolet zone .It is predicted that a maximu m enhanced factor is 70 in visible light zone.SERS spectrum of adenine and uracil are got from argentine piece treated by ORC. Adenine has distinct SERS effect with the presence of fluorescence.Four specific peak values are of SERS spectrum of uracil which has a maximum model,SERS ring breathing model,of four,at 1035 c m -1 affording the foundation.
Keywords:ORC  Adenine  Uracil  SERS
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