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A technique for near-infrared (NIR) light activity by isolation of individual large molecules and harmony in electronic structures

Research Project

Project/Area Number 17K14085
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Nanomaterials chemistry
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Tange Masayoshi  国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (10533458)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywordsカーボンナノチューブ / ポリマーラッピング / 孤立分散 / 低速遠心分離 / バックグラウンド吸光度 / ピークバレー比 / ナノ複合体 / 構造特異性 / 近赤外光 / ナノ材料 / 表面・界面物性 / 複合材料・物性 / 光物性
Outline of Final Research Achievements

Some kinds of fluorene-based polymers are noticeably sensitive to the tube structures or electronic structures in carbon nanotubes (CNTs). In this work, we have succeeded in lowering of the centrifugal force for selective extraction of specific large-diameter semiconducting CNTs (semi-CNTs) using the polymer-wrapping technique. The optical absorption spectra of polymer-wrapped semi-CNTs extracted via the low-speed centrifugation show high peak-to-valley ratio and low background absorption in near-infrared (NIR) wavelengths. Their remarkable optical characteristics in individually dispersed semi-CNTs in solution are useful for NIR fluorescence beyond 1450 nm. Moreover, their optical features are significantly different from those of large-diameter CNTs dispersed by surfactants which lead to broadening of absorption and emission spectral lines due to the formation of micelles.

Academic Significance and Societal Importance of the Research Achievements

擬1次元形状の半導体カーボンナノチューブ(CNT)は、近赤外波長での発光や光吸収が可能な電子構造をもつ。近赤外光応答を示す物質の種類は限られており、単元素で構成されるCNTは稀な存在である。しかし、材料として扱う場合、CNT凝集体の形成や特性の異なる多様なチューブ構造の存在によって、CNT本来の特性は潜在化しやすい。そこで、本研究成果によって、波長1500nmを超える近赤外領域でも顕著な光応答を示せるように半導体CNTの構造特異性を巨視的な光学的特性として顕在化させた。これにより、個々の半導体CNT特性を活用した工学的応用(化学物質検出や未利用な太陽光エネルギーの活用など)への展開が加速する。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Products Report
  • Research Products

    (8 results)

All 2023 2022 2019 2018 Other

All Int'l Joint Research (1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (4 results)

  • [Int'l Joint Research] 蘇州ナノテク・ナノバイオ機構/南京工業大学(中国)

    • Related Report
      2017 Research-status Report
  • [Presentation] Selective extraction from polymer-wrapped single-wall carbon nanotubes for large-diameter semiconducting tubes using low-speed centrifugation2019

    • Author(s)
      M. Tange, T. Okazaki
    • Organizer
      6th International Conference on Multifunctional, Hybrid and Nanomaterials
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 低速遠心分離による直径の大きな単層カーボンナノチューブのためのチューブ構造選別2018

    • Author(s)
      丹下将克、岡崎俊也
    • Organizer
      応用物理学会(第79回秋季学術講演会)
    • Related Report
      2018 Research-status Report
  • [Remarks] Sunny days (Tange's Web Site)

    • URL

      https://staff.aist.go.jp/masa-tange/index.html

    • Related Report
      2018 Research-status Report 2017 Research-status Report
  • [Patent(Industrial Property Rights)] カーボンナノチューブ複合体、ナノ粒子複合体の製造方法、およびナノ粒子複合体の製造装置2023

    • Inventor(s)
      丹下 将克
    • Industrial Property Rights Holder
      国立研究開発法人産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2023-000362
    • Filing Date
      2023
    • Related Report
      Products Report
  • [Patent(Industrial Property Rights)] 半導体カーボンナノチューブを備える積層体2023

    • Inventor(s)
      丹下 将克、加藤 大
    • Industrial Property Rights Holder
      国立研究開発法人産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2023-102073
    • Filing Date
      2023
    • Related Report
      Products Report
  • [Patent(Industrial Property Rights)] 高ピークバレー比の半導体カーボンナノチューブ分散液、その調製方法2022

    • Inventor(s)
      丹下 将克
    • Industrial Property Rights Holder
      国立研究開発法人産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Acquisition Date
      2022
    • Related Report
      Products Report
  • [Patent(Industrial Property Rights)] 高ピークバレー比の半導体カーボンナノチューブ分散液、その調製方法2018

    • Inventor(s)
      丹下将克
    • Industrial Property Rights Holder
      国立研究開発法人産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-131848
    • Filing Date
      2018
    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2024-03-28  

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