金ナノ粒子の自己集合化ボトムアッププロセスを利用したプラズモニックナノセンサー

カテゴリ: 部門大会

論文No: 01pm1-B-6

グループ名: 第34回「センサ・マイクロマシンとその応用システム」シンポジウム論文集

発行日: 2017/10/24

タイトル(英語): Plasmonic Nanosensing Devices Fabricated in Self-Assembling Bottom-up Method of Gold Nanoparticles

著者名: 福岡 隆夫(兵庫県立大学),内海(兵庫県立大学),裕一(兵庫県立大学),山口 明啓(兵庫県立大学)

著者名(英語): Takao Fukuoka| Utsumi|Yuichi |Yamaguchi Akinobu

キーワード: 金ナノ粒子,自己集合,プラズモン,表面増強ラマン散乱,ヘテロサイクリックアミン

要約(日本語): We synthesized gold nanoparticles (AuNP) self-assembly with surface enhanced Raman scattering (SERS) activity, and applied to convenient analysis of the carcinogenic heterocyclic amine MeIQx. The aggregates with strong absorption from 700 to 800 nm were sufficiently obtained. Surprisingly, the absorption spectra of the AuNP aggregation did not change even at least at the MeIQx concentration of 800 nM although the surface adsorption of MeIQx molecules was likely to accelerate aggregation rate. Since the absorption spectrum shows the morphology of the nanostructure and the strength of the localized plasmon resonance corresponding to SERS activity. As a result, the obtained AuNP self-assemblies behaved a molecular sensing SERS nanosensors effectively in the aqueous medium. A unique spectra responding proportionally in the range of MeIQx concentration from 60 to 500 nM could be observed. The lowest detection limit of MeIQx using the SERS nanosensors was 3.6 pmol.

要約(英語): We synthesized gold nanoparticles (AuNP) self-assembly with surface enhanced Raman scattering (SERS) activity, and applied to convenient analysis of the carcinogenic heterocyclic amine MeIQx. The aggregates with strong absorption from 700 to 800 nm were sufficiently obtained. Surprisingly, the absorption spectra of the AuNP aggregation did not change even at least at the MeIQx concentration of 800 nM although the surface adsorption of MeIQx molecules was likely to accelerate aggregation rate. Since the absorption spectrum shows the morphology of the nanostructure and the strength of the localized plasmon resonance corresponding to SERS activity. As a result, the obtained AuNP self-assemblies behaved a molecular sensing SERS nanosensors effectively in the aqueous medium. A unique spectra responding proportionally in the range of MeIQx concentration from 60 to 500 nM could be observed. The lowest detection limit of MeIQx using the SERS nanosensors was 3.6 pmol.

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