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电化学  2011 

湿化学镀SPR金基底及其性能表征

, PP. 31-36

Keywords: 表面等离子体共振光谱(SPR),湿化学镀法,自制SPR金基底,商业SPR金基底

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Abstract:

建立一种由单一水相操作的表面等离子体共振法(SPR)制备金基底.即:在3-氨基丙基三甲氧基硅烷(APTMS)修饰的玻璃片上自组装一层细小的金胶纳米粒子,以此为催化模板,利用化学镀技术在纳米尺度范围内控制金膜的均匀增长,获得优异SPR信号响应所需要的金膜形貌和厚度.紫外光谱(UV-vis),透射电镜(TEM)观测表明,纳米金膜催化模板粒径约为2.5nm.扫描电镜(SEM)观察湿化学镀SPR金基底均匀分布,粒径约为40nm.与商品化真空镀金基底相比,湿化学镀金基底对乙醇的SPR响应强度相当,且可调控性更高.

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