[19p-G202-1~12] 12.2 Characterization and Materials Physics

[19p-G202-6] Evaluation of the chemical enhancement effect in SERS enhancement of di-substituted benzene with well-defined metal nanostructures

〇(M1)Shuhei Watanabe¹, Satoshi Kaneko¹, Shinya Kasai², Kazuhito Tsukagoshi², Manabu Kiguchi¹ (1.Tokyo Tech, 2.NIMS)

Keywords:Surface-enhanced Raman scattering, electromagnetic effect, chemical effect

Surface-enhanced Raman scattering (SERS) has attracted wide attention as the high sensitive detection of molecules. In this research, we aimed to reveal the chemical effect in SERS enhancement. We measured the SERS spectra of 1,4-benzenedithiol (BDT) and 4-aminobenzenethiol (ABT) utilizing the array of the gold nano structure fabricated by a lithography technique. As a result, we observed the SERS signal enhancement depending on the vibration mode and chemical species. Therefore, we succeeded in the evaluation of the chemical effects in SERS enhancement originating from the electronic states of molecules.