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Development of platform for electrochemiluminescence immunoassay using graphene transparent electrode

Research Project

Project/Area Number 19K05218
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 28030:Nanomaterials-related
Research InstitutionAoyama Gakuin University

Principal Investigator

Watanabe Takeshi  青山学院大学, 理工学部, 助教 (30803506)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsグラフェン / 電気化学発光 / 免疫分析 / POCT / ECL / 透明電極 / 電気化学 / イムノアッセイ / 電気化学発光イメージング
Outline of Research at the Start

高感度で簡便な小型な免疫分析装置ができれば、臨床検査がより身近なものになり病気の早期発見に繋がると期待される。電気化学発光(ECL)を用いた免疫検査装置は高感度であるが、一般に大型である。本研究では、炭素原子で構成され光学透明性と電気伝導性に優れるグラフェンを使い捨ての透明電極として利用し、高感度かつ簡便なECL免疫分析システムの実現を目指す。このシステム実現のためのグラフェン電極の最適化の手法として、ECLイメージングの技術開発を行い、ECL測定に適したグラフェン透明電極と表面修飾方法の探索を行う。

Outline of Final Research Achievements

This study has demonstrated graphene grown by CVD method allows for highly sensitive electrochemiluminescence-based (ECL) analysis owing to its high optical transparency, compared to the conventional electrode materials. ECL imaging for multilayer graphene revealed multilayer islands showed greater ECL than single-layer domain, while pristine single-layer graphene electrode that has no multilayer islands showed higher ECL intensity than multilayer graphene electrodes. ECL-based immunoassay of a carcinoembryonic antigen (CEA), known as a typical tumor marker, using single-layer graphene transparent electrodes, was successfully demonstrated below the reference concentration level. Furthermore, covalent surface modification of graphene without compromising intrinsic electric properties was successfully demonstrated by utilizing stacked two-layer graphene electrodes.

Academic Significance and Societal Importance of the Research Achievements

本研究では、単層のグラフェンが電気化学発光分析用途の電極として優れた特性をもつことを見出した。炭素原子わずか一層のシートが、電気化学発光のような電極表面にラジカル種を生成するプロセスにも適用可能であると示したことはECL分析やグラフェンの電気化学応用の可能性を広げるものである。
グラフェンは資源として豊富に存在する炭素原子が一層のみのシートであるため、使い捨ての電極材料として利用可能である。高感度測定可能な電気化学発光免疫測定にグラフェンを使い捨て電極として利用すれば、高感度測定可能な迅速感検査機器の開発が可能であり、新たな感染症発生時の備えや遠隔地の難病治療などに貢献できると期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2022 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Single-layer graphene as a transparent electrode for electrogenerated chemiluminescence biosensing2022

    • Author(s)
      Watanabe Takeshi、Ishikawa Ryohei、Hara Natsumi、Iwasaki Takamitsu、Miyachi Mamoru、Shiigi Yusei、Takahashi Mayu、Kuroki Daichi、Koh Shinji
    • Journal Title

      Electrochemistry Communications

      Volume: in press Pages: 107290-107290

    • DOI

      10.1016/j.elecom.2022.107290

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterization of epitaxial CVD graphene on Ir(111)/α-Al<sub>2</sub>O<sub>3</sub>(0001) by photoelectron momentum microscopy2022

    • Author(s)
      Hashimoto Eri、Tamura Keigo、Yamaguchi Hayato、Watanabe Takeshi、Matsui Fumihiko、Koh Shinji
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: SD Pages: SD1015-SD1015

    • DOI

      10.35848/1347-4065/ac4ad8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of poly (methyl methacrylate)-supported transfer technique of single-wall carbon nanotube conductive films for flexible devices2021

    • Author(s)
      Kuromatsu Sho、Watanabe Takeshi、Nonoguchi Yoshiyuki、Kawai Tsuyoshi、Koh Shinji
    • Journal Title

      Thin Solid Films

      Volume: 736 Pages: 138904-138904

    • DOI

      10.1016/j.tsf.2021.138904

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces2020

    • Author(s)
      Miki Keishu、Watanabe Takeshi、Koh Shinji
    • Journal Title

      Crystals

      Volume: 10 Issue: 4 Pages: 241-241

    • DOI

      10.3390/cryst10040241

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reusability of Ir(111)/α-Al2O3(0001) substrates in graphene chemical vapor deposition growth2020

    • Author(s)
      Sakurai Atsushi、Niki Masaya、Watanabe Takeshi、Sawabe Atsuhito、Koh Shinji
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SI Pages: SIID01-SIID01

    • DOI

      10.35848/1347-4065/ab7f1a

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Evaluation of electrochemiluminescence properties of graphene transparent electrodes for rapid and simple testing2021

    • Author(s)
      Ryohei Ishikawa, Natsumi Hara, Takamitsu Iwasaki, Takeshi Watanabe, and Shinji Koh
    • Organizer
      2021 International chemical congress of pacific basin societies (PACIFICHEM 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improved electrochemiluminescence behavior of CVD-grown graphene electrode by UV/ozone treatment2021

    • Author(s)
      Yusei Shiigi, Ryohei Ishikawa, Takeshi Watanabe, and Shinji Koh
    • Organizer
      2021 International chemical congress of pacific basin societies (PACIFICHEM 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] CVDグラフェン電極へのUV/オゾン前処理が電気化学発光特性に与える効果2021

    • Author(s)
      椎木 優成、石川 遼平、渡辺 剛志、黄 晋二
    • Organizer
      電気化学秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 電気化学発光免疫分析応用に向けたグラフェン透明電極の評価2021

    • Author(s)
      石川 遼平、渡辺 剛志、岩崎 貴充、黄 晋二
    • Organizer
      電気化学秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ジアゾニウム塩還元による共有結合修飾を施した単層及び積層グラフェンの電気化学特性評価2021

    • Author(s)
      坪内 克樹、渡辺 剛志、黄 晋二
    • Organizer
      電気化学秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 迅速簡易免疫検査に向けたグラフェン電極の電気化学発光特性評価2021

    • Author(s)
      石川 遼平、岩崎 貴充、渡辺 剛志、黄 晋二
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Comparison between mono- and multi-layer CVD-grown graphene transparent electrodes for electrochemiluminescence applications2019

    • Author(s)
      Natsumi Hara, Takeshi Watanabe, Takamitsu Iwasaki, Shohei Kosuga and Shinji Koh
    • Organizer
      32nd International Microprocesses and Nanotechnology Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ECLイメージングを利用したグラフェン透明導電膜の局所分析2019

    • Author(s)
      岩﨑 貴充,渡辺 剛志, 原 菜摘, 黄 晋二
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] CVDグラフェン透明電極における電極表面の性質と電気化学発光特性の相関2019

    • Author(s)
      原 菜摘,渡辺 剛志, 岩﨑 貴充, 小菅 祥平, 黄 晋二
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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