Development of oxygen-responsive lanthanide complexes for biological applications

• Project/Area Number: 17K05818
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic chemistry
• Research Institution: Kindai University
• Principal Investigator: Nakai Hidetaka 近畿大学, 理工学部, 准教授 (70377399)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 合成化学 / 光物性 / 酸素プローブ / ランタニド錯体 / 発光

Outline of Final Research Achievements

Our researches had been focused on the design and synthesis of new oxygen-responsive lanthanide complexes in order to obtain fundamental knowledge in the development of new medical and diagnostic technologies using luminescent lanthanide complexes.
As a result, we have obtained basic knowledge on ligand and complex designs for the development of “oxygen-responsive lanthanide complexes for biological applications”. In addition, we have succeeded in creating the “oxygen probes” using our prototype oxygen-responsive lanthanide complexes. Furthermore, we have found that the newly developed ligands can provide oxygen-responsive lanthanide complexes with “chiral molecule”-responsive function.

Academic Significance and Societal Importance of the Research Achievements

プロトタイプの酸素応答性ランタニド錯体を用いて、f-f発光を利用した酸素プローブとしては世界最高の性質を示す酸素プローブを作成することができた。また、窒素下では緑・空気下では黄・酸素下では赤色に発光色が変化する比色酸素プローブの開発にも成功した。さらに、「キラル分子に応答する機能」を有する酸素応答性ランタニド錯体は、生体内に存在するアミノ酸などのキラル分子を特異的に認識できる可能性を秘めた新規な化合物である。

Research Products

• [Journal Article] Luminescent Tb(III) and Sm(III) Complexes with a 1,4,7-Triazacyclononane-based Tris-aryloxide Ligand for High-performance Oxygen Sensors. (2017)
  • Author(s): Nakai, Hidetaka;* Kuyama, Masafumi; Seo, Juncheol; Goto, Takahiro; Matsumoto, Takahiro; Ogo, Seiji.
  • Journal Title: Dalton Trans. Volume: 46 Issue: 28 Pages: 9126-9130
  • DOI: 10.1039/c7dt01388d
  • Peer Reviewed
• [Presentation] 1,4,7,10-テトラアザシクロドデカン骨格およびビフェニル基を有するガドリニウム錯体の合成と構造および発光特性 (2019)
  • Author(s): 横山直紀、中井英隆
  • Organizer: 錯体化学会第69回討論会
• [Presentation] ビフェニル基を有する酸素応答性テルビウム錯体の合成と構造および発光特性 (2019)
  • Author(s): 北村拓也、中井英隆
  • Organizer: 日本化学会第99春季年会
• [Presentation] 1,4,7,10-テトラアザシクロドデカン骨格およびビフェニル基を有する酸素応答性テルビウム錯体の合成と構造および発光特性 (2019)
  • Author(s): 横山直紀、中井英隆
  • Organizer: 日本化学会第99春季年会
• [Presentation] ビフェニル基を有するガドリニウム錯体の合成と構造および発光特性 (2018)
  • Author(s): 北村拓也、中井英隆
  • Organizer: 日本化学会第98春季年会
• [Presentation] Development of high-efficiency photo-responsive metal complexes (2017)
  • Author(s): Nakai Hidetaka
  • Organizer: International symposium on chemistry for solar energy applications 2017
  • Int'l Joint Research
• [Presentation] A photo-responsive gadolinium(III) complex having biphenyl groups (2017)
  • Author(s): Kitamura Takuya、Nakai Hidetaka
  • Organizer: International symposium on chemistry for solar energy applications 2017
  • Int'l Joint Research
• [Presentation] Development of high-performance oxygen sensors using a luminescent terbium(III) complex (2017)
  • Author(s): Yoshimura Seiya、Nakai Hidetaka
  • Organizer: International symposium on chemistry for solar energy applications 2017
  • Int'l Joint Research
• [Presentation] A photo-responsive gadolinium(III) complex having 1,4,7,10-tetraazacyclododecane skeleton (2017)
  • Author(s): Yokoyama Naoki、Nakai Hidetaka
  • Organizer: International symposium on chemistry for solar energy applications 2017
  • Int'l Joint Research