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RIKEN Center for Emergent Matter Science Emergent Supramolecular Materials Research Team

Team Leader: Yong-Jin Pu (D.Eng.)

Research Summary

Yong-Jin  Pu(D.Eng.)

Chemical or electrical junction at the interface between organic and inorganic layers largely affects performance of the photon–electron conversion devices. Such a junction is based on intermolecular interaction or chemical reaction, and the active control of the interaction at the molecular level is necessary. Our challenge is to synthesize the molecular hybrids of organic and inorganic semiconductors and develop their new functions. Especially, we develop novel photocatalysts or molecular sensors by the 2D- or 3D-controlled molecular hybridized network. We also challenge to create the macroscopic function switching device, triggered by the dynamic change of the network in non-equilibrium state.

Main Research Fields

  • Interdisciplinary Science & Engineering

Related Research Fields

  • Chemistry

Keywords

  • Quantum dot
  • Semiconductor nanoparticle
  • Exciton management

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.

  • 1. N. Aizawa, Y. Harabuchi, S. Maeda, Y.-J. Pu.:
    "Kinetic Prediction of Reverse Intersystem Crossing in Organic Donor–Acceptor Molecules"
    Nature Communications, 11, 3909 (2020).
  • 2. K. Enomoto, D. Inoue, Y.-J. Pu.:
    "Controllable 1D patterned assembly of colloidal quantum dots on PbSO4 nanoribbons"
    Advanced Functional Materials, 29, 1905175 (2019).
  • 3. Y.-J. Pu, Y. Koyama, D. Otsuki, M. Kim, H. Chubachi, Y. Seino, K. Enomoto, N. Aizawa.:
    "Exciplex Emissions Derived from Exceptionally Long-Distanced Donor and Acceptor Molecules"
    Chemical Science, 10, 9203-9208 (2019).
  • 4. Y.-J. Pu, R. Satake, Y. Koyama, T. Otomo, R. Hayashi, N. Haruta, H. Katagiri, D. Otsuki, D. Kim, T. Sato.:
    "Absence of delayed fluorescence and triplet-triplet annihilation in organic light emitting diodes with spatially orthogonal bianthracenes"
    Journal of Materials Chemistry C, 7, 2541 (2019).
  • 5. *T. Chiba, Y. Hayashi, H. Ebe, K. Hoshi, J. Sato, S. Sato, Y.-J. Pu, S. Ohisa, J. Kido.:
    "Anion-exchange red perovskite quantum dots with ammonium iodine salts for highly efficient light-emitting devices"
    Nature Photonics, 12, 681–687 (2018).
  • 6. *S. Kawata, Y.-J. Pu, A. Saito, Y. Kurashige, T. Beppu, H. Katagiri, M. Hada, J. Kido.:
    "Singlet Fission of Non-polycyclic Aromatic Molecules in Organic Photovoltaics"
    Advanced Materials, 28 (8), 1585-1590 (2016).
  • 7. *T. Chiba, Y.-J. Pu, J. Kido.:
    "Solution-Processed White Phosphorescent Tandem Organic Light-Emitting Devices"
    Advanced Materials, 27 (32), 4681-4687 (2015).
  • 8. *Y.-J. Pu, T. Chiba, K. Ideta, S. Takahashi, N. Aizawa, T. Hikichi, J. Kido.:
    "Fabrication of organic light-emitting devices comprising stacked light-emitting units by solution-based processes"
    Advanced Materials, 27 (8), 1327-1332 (2015).
  • 9. *Y.-J. Pu, T. Chiba, K. Ideta, S. Takahashi, N. Aizawa, T. Hikichi, J. Kido.:
    "Fabrication of organic light-emitting devices comprising stacked light-emitting units by solution-based processes"
    Advanced Materials, 27 (8), 1327-1332 (2015).
  • 10. *N. Aizawa, Y.-J. Pu, M. Watanabe, T. Chiba, K. Ideta, N. Toyota, M. Igarashi, Y. Suzuri, H. Sasabe, J. Kido.:
    "Solution-processed multilayer small-molecule light-emitting devices with high-efficiency white-light emission"
    Nature Communications, 5, 5756 (2014).

Recent Research Results

Related Links

Lab Members

Principal investigator

Yong-Jin Pu
Team Leader

Core members

Naoya Aizawa
Research Scientist
Minjun Kim
Postdoctoral Researcher
Jianjun Liu
Postdoctoral Researcher
Seokwoo Kang
Postdoctoral Researcher
Kazushi Enomoto
Special Postdoctoral Researcher

Careers

Position Deadline
Seeking a Postdoctoral Researcher (W21173) Open until filled

Contact Information

S302 Bioscience Bldg,
2-1 Hirosawa, Wako, Saitama
351-0198, Japan
Tel: +81-(0)48-467-9551
Email: yongjin.pu [at] riken.jp

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