Surface-enhanced nonresonance Raman scattering from size- and morphology-controlled gold nanoparticle films
Surface-enhanced nonresonance Raman scattering from size- and morphology-controlled gold nanoparticle films
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DOI：
10.1021/jp0490150
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发表时间：
2004-08-05
影响因子：
3.3
通讯作者：
Yamada, S
中科院分区：
文献类型：
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作者：
Suzuki, M;Niidome, Y;Yamada, S
用氯化钠和氢氧化钠盐化胶体溶液，在玻璃衬底上制备了不同粒径（35 +/- 5、15 +/- 1 nm）和团聚态的金纳米颗粒薄膜。将罗丹明6G乙醇溶液浇镀在金纳米颗粒膜上，测量其表面增强拉曼散射（SERS）光谱。我们发现，颗粒越大的膜的SERS信号强度越高，并且NaClO4制备的膜的SERS信号高于NaOH制备的膜。较大的金纳米颗粒的大量聚并对于获得较大的SERS信号是非常有效的。用氯化钠制备的膜的SERS增强因子估计与10(8)相似。
Gold nanoparticle films with different particles sizes (35 +/- 5, 15 +/- 1 nm) and agglomerated states were prepared on glass substrates, by salting-out the colloidal solutions with NaClO4 or NaOH. An ethanol solution of rhodamine 6G was cast on the gold nanoparticle film and the surface-enhanced Raman scattering (SERS) spectrum was measured. We found that the intensity of the SERS signal was higher for the film with larger particles and that the film prepared from NaClO4 gave higher SERS signals than that prepared from NaOH. Considerable coalescence of larger gold nanoparticles was quite effective for obtaining larger SERS signals. The SERS enhancement factor was estimated to be similar to10(8) for the film prepared from NaClO4.