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Citation: Wang Jian, Zhu Tao, Fu Xiao-Yi, Liu Zhong-Fan. Study of Chemical Enhancement in SERS from Au Nanoparticles Assembly[J]. Acta Physico-Chimica Sinica, ;1998, 14(06): 485-489. doi: 10.3866/PKU.WHXB19980602 shu

Study of Chemical Enhancement in SERS from Au Nanoparticles Assembly

1.
Center for Intelligent Materials Research(CIMR),College of Chemistry Molecular Engineering,Peking University,Beijing 100871

Received Date: 7 March 1998
Available Online: 15 June 1998

ld nanoparticles were assembled on ld substrates with the self-assembled monolayer(SAM) of p-minothiophenol(PATP). AFM measurements disclose that ld nanoparticles are scattered over the surface of the substrate with a submonolayer coverage. The Raman signal of the coupling layer, the SAM of PATP, can be well observed. Potential-dependent measurements were performed to study the chemical enhancement in SERS of such a system. Based on the supposition that the direction of charge transfer is from ld nanoparticles to PATP, it is deduced that Herzberg-Teller contribution has ruled in the SERS of such a system.
- Au nanoparticles,
- Assembly,
- SERS,
- Chemical enhancement,
- Charge transfer
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