Norihisa Kobayashi

Graduate School of Engineering, Chiba University

Research AreasFunctional polymer chemistry, Device-related chemistry

Creation of helical biopolymer-integrated softcrystal and its application to photo-electronic devices

Softcrystal, DNA electronics, DNA photonics, Electrochemiluminescence, Luminescent metal complexes, Helical biopolymers
Co-Investigator: Kazuki Nakamura (Graduate School of Engineering, Chiba University, Associate Professor)

Research Outline

DNA molecules, having well-designed double-helical structure, can incorporate functional molecules through various kinds of binding modes. The functionalized DNA complexes also form self-organized assembled structures, which can be considered as “DNA softcrystal”. In this research, we aim to create photo-electronic functional “DNA softcrystals” consisted of highly-organized and integrated functional DNA complexes. The highly-organized functional DNA complexes with functional materials are prepared by electrostatic orientation and stretching method. Then, stimuli-responsive control of electronic and optical properties in the DNA softcrystal is investigated. We also fabricate innovative functional devices based on novel functionalities of the DNA softcrystals.

Concept of this research

Representative Achievements

  • Ultrafast Response in AC-Driven Electrochemiluminescent Cell Using Electrochemically Active DNA/Ru(bpy)32+ Hybrid Film with Mesoscopic Structures
    S. Tsuneyasu, R. Takahashi, H. Minami, K. Nakamura, N. Kobayashi,
    Scientific Reports, 2017, 7, Art. no. 8525.
    DOI: 10.1038/s41598-017-09123-2
  • Why were alternating-current driven electrochemiluminescence properties from a Ru(bpy)32+ dramatically improved by the addition of titanium dioxide nanoparticles?
    S. Tsuneyasu, K. Ichihara, K. Nakamura, N. Kobayashi,
    Phys. Chem. Chem. Phys., 2016, 18, 16317–16324.
    DOI: 10.1039/c6cp02881k
  • Temperature-dependent characteristics of non-volatile transistor memory based on a polypeptide
    L. Liang, T. Fukushima, K. Nakamura, S. Uemura, T. Kamata, N. Kobayashi,
    J. Mater. Chem. C, 2014, 2, 879–883.
    DOI: 10.1039/C3TC31777C
  • Multicolor Electrochromism Showing Three Primary Color States (Cyan–Magenta–Yellow) Based on Size- and Shape-Controlled Silver Nanoparticles
    A. Tsuboi, K. Nakamura, N. Kobayashi,
    Chem. Mater., 2014, 26, 6477–6485.
    DOI: 10.1021/cm5039039
  • Alternating-Current-Driven, Color-Tunable Electrochemiluminescent Cells
    T. Nobeshima, M. Nakakomi, K. Nakamura, N. Kobayashi,
    Advanced Optical Materials, 2013, 1, 144–149,
    DOI: 10.1002/adom.201200056



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