Prof. Youhei Takeda (OU)

OU - Associate professor

Prof. Youhei Takeda, Associate Professor of Department of Applied Chemistry, Graduate School of Engineering, Osaka University (OU), Japan. He received his Ph.D. from Kyoto University under the supervision of Prof. Tamejiro Hiyama and Masaki Shimizu in 2010 and thereafter spent a year as a post-doctoral fellow at the Timothy M. Swager group at MIT, USA, before starting his academic career at OU. During this term, he was appointed as JSPS research fellow (DC2 and PD). He was appointed as Assistant Professor and Associate Professor in 2011 and 2015, respectively. He has also been an Adjunct Lecturer at Vietnam-Japan-University, Hanoi, since 2015. He is an expert in the design, synthesis, and characterization of π-conjugated functional molecules and polymers. Another his expertise is the design and development of novel catalytic synthetic transformations through transition-metal and/or organic catalysis. He has delivered 36 invited lectures, and is the author and co-author of 39 internationally recognized scientific papers, 1 account, 3 books, 1 patent.




Researcher ID: E-1468-2011


  1. Research interest:
  • The development of novel charge transfer-based emissive compounds that exhibit thermally activated delayed fluorescence (TADF), room-temperature phosphorescence (RTP), and mechanochromic luminescence (MCL) properties
  • The development of n-type (electron-accepting) organic materials
  • Optoelectronics applications of synthesized materials
  • The development of novel, efficient, and stereoselective transition-metal-catalyzed transforamtions of saturated azaheterocycles into biologically-relevant amine compounds
  • The utilization of halogen bonding (XB) in catalysis and materials sciences


  1. Expertise:
  • Design, synthesis, and characterization of -conjugated organic compounds and polymers
  • Physicochemical characterization of organic functional -conjugated materials
  • Design and development of novel catalytic reactions


  1. Publications (5 most important):
    1. Okazaki, M.; Takeda, Y.; Data, P.; Pander, P.; Higginbotham, H.; Monkman, A. P.; Minakata, S. “Thermally Activated Delayed Fluorescent Phenothiazine-dibenzo[a,j]phenazine-phenothiazine Triads Exhibiting Tricolor-changing Mechanochromic Luminescence” Chemical Science 2017, 8, 2677–2686. DOI: 10.1039/C6SC04863C
    2. Takeda, Y.; Hatanaka, K.; Nishida, T.; Minakata, S. “Thieno[3,4-c]phosphole-4,6-dione: A Versatile Building Block for Phosphorus-containing Functional pi-Conjugated Systems” Chemistry—A European Journal 2016, 22, 10460–10364. DOI: 10.1002/anie.201602392
    3. Data, P.; Pander, P.; Okazaki, M.; Takeda, Y.; Minakata, S.; Monkman, A. P. “Dibenzo[a,j]phenzine-Cored Donor-Acceptor-Donor (D-A-D) Compounds as Green-to-Red/NIR Thermally Activated Delayed Fluorescence Organic Light Emitters” Angewandte Chemie International Edition 2016, 55, 5739–5744. DOI: 10.1002/anie.201600113
    4. Takeda, Y.; Okazaki, M.; Minakata, S. “Oxidative Skeletal Rearrangement of 1,1’-Binaphthalene-2,2’-Diamines (BINAMs) via C–C Bond Cleavage and Nitrogen Migration: A Versatile Synthesis of U-Shaped Azaacenes” Chemical Communications 2014, 50, 10291–10294DOI: 10.1039/C4CC04911J
    5. Takeda, Y.; Ikeda, Y.; Kuroda, A.; Tanaka, S.; Minakata, S. “Pd/NHC-Catalyzed Enantiospecific and Regioselective Suzuki-Miyaura Arylation of 2-Arylaziridines: Synthesis of Enantioenriched 2-Arylphenethylamine Derivatives” Journal of the American Chemical Society 2014, 136, 8544–8547. DOI: 10.1021/ja5039616


  1. Projects:
  • “Management of Excited States Based on Perpendicular Donor-Acceptor π-Conjugated Systems”, Continuation Grants for Young Researchers, funded by Asahi Glass Foundation, 2017–2020
  • “π-Figuration of Functional Molecules based on Flexible Conformational Change as the Key to Functions” (grant number: 17H05155), Grant-in-Aid for Scientific Research on Innovative Areas, funded by Japan Society for the Promotion of Science (JSPS), 2017–2019
  • “Catalytic Transformations of Saturated Cyclic Amines through the Oxidative Addition of C–N Single Bond to Transition Metal Complexes as the Key Process” (grant number: 16H01023), Grant-in-Aid for Scientific Research on Innovative Areas, funded by Japan Society for the Promotion of Science (JSPS), 2016–2018
  • “Creation of Value-Added Thermally Activated Delayed Fluorescence (TADF) Materials showing Stimuli-responsive Regulation of Emission Properties”, Research Grant, funded by the Japan Prize Foundation, 2016–2017
  • “π-Figuration through the Utilization of Flexible Pyramidal Inversion of Organophosphorus Compounds” (grant number: 15H00997), Grant-in-Aid for Scientific Research on Innovative Areas, funded by Japan Society for the Promotion of Science (JSPS), 2015–2017
  • “Stereospecific Cross-coupling of Aziridines Oriented towards Efficient Synthesis of Non-naturally-occurring Amino Acids” (grant number: 25810061) Grant-in-Aid for Young Scientists (B), funded by Japan Society for the Promotion of Science (JSPS), 2013–2015


  1. Scientific awards:
  • Toray Award in Synthetic Organic Chemistry, Japan
  • Osaka University Presidential Awards for Encouragement