Development of Highly Sensitive Plasmonic Sensors

2014 Fiscal Year Final Research Report

• Project/Area Number: 24550102
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Analytical chemistry
• Research Institution: Kochi University
• Principal Investigator: WATANABE Shigeru 高知大学, 教育研究部総合科学系, 教授 (70253333)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 金ナノ粒子 / 表面プラズモン / 高分子ミセル / 自己組織化 / テンプレート

Outline of Final Research Achievements

Preparation and surface modification of gold nanoparticles has been studied to develop a plasmonic sensor. A facile 2D self-assembly method was developed for the preparation of gold nanoparticle array on substrates using block copolymer nanotemplates. Well-ordered gold nanoparticle array was applied to a local surface plasmon resonance (LSPR) sensor. We also have developed a novel sensor combined surface plasmon- and fluorescence spectroscopy. The gold nanoparticle array was formed on a SiO2 layer containing fluorescence dyes. The resonant excitation of local surface plasmon resonance provides an enhanced intensity of fluorescence of dyes, which is directly translated to changes of fluorescence intensity measured upon the capture of target analyte at the surface of gold nanoparticles.

Free Research Field

ナノバイオテクノロジー