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PUBLICATIONS

2024

  • Generation-Dependent Intramolecular Charge Transfer Excited-State Dynamics in Thermally Activated Delayed Fluorescence Carbazole Dendrimers
    Ami Takada, Eri Hisamura, Keiko Yamaoka, Tomohiro Ogawa, Ken Onda*, Ken Albrecht*, Kiyoshi Miyata*
    J. Phys. Chem. C,  2024, 128, 18820-18827.
  • Aluminum Complex-Core Carbazole Dendrimers Exhibiting Thermally Activated Delayed Fluorescence
    Kohei Nakao, Minori Furukori, Guanting Liu, Takuya Hosokai*, Takuma Yasuda*, Ken Albrecht*
    ACS. Appl. Opt. Mater.,  2024, 2, 1393–1402.
  • Water-soluble luminescent tris(2,4,6-trichlorophenyl)methyl radical-carbazole dyad
    Kosuke Anraku, Kenshiro Matsuda, Satoshi Miyata, Hikaru Ishii, Takuya Hosokai*, Satoshi Okada, Kazuhiro Nakamura, Kohei Nakao, Ken Albrecht*
    J. Mater. Chem. B, 2024, 12, 6840-6846.      Journal of Materials Chemistry B HOT Paper
  • In situ formation of an intimate solid-solid interface by reaction between MgH2 and Ti to stabilize metal hydride anode with high active material content
    Yixin Chen, Atsushi Inoishi*, Shigeto Okada, Hikari Sakaebe, Ken Albrecht
    J. Magnesium Alloys, 2024, in press.
  • In situ Electrolyte Design: Understanding the Prospects and Limitations of a High Capacity Ca(BH4)2 Anode for All Solid State Batteries
    Yixin Chen, Ryo Sakamoto, Atsushi Inoishi*, Shigeto Okada, Hikari Sakaebe, Ken Albrecht, Duncan H. Gregory*
    Batter. Supercaps, 2024, e202300550 (1-9).     Cover Feature of the Issue
  • Electrode thickness dependence of charge–discharge performance and reaction distribution of an in-situ-formed solid electrolyte for MgH2 anodes
    Yixin Chen, Atsushi Inoishi*, Kazuki Yoshii, Hiroki Sato, Shigeto Okada, Hikari Sakaebe, Ken Albrecht
    Electrochimica Acta, 2024, 485, 144083(1-7).
  • TiH2-based anode: In situ formation of solid electrolyte for high volumetric energy density with minimal content of conducting agent
    Yixin Chen, Atsushi Inoishi*, Shigeto Okada, Hikari Sakaebe, Ken Albrecht 
    J. Energy Storage, 2024, 86, 111286(1-10).
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2023

  • Effects of halogen atom substitution on luminescent radical: A case study on tris(2,4,6-trichlorophenyl)methyl radical-carbazole dyad
    Kazuhiro Nakamura, Kenshiro Matsuda, Rui Xiaotian, Minori Furukori, Satoshi Miyata, Takuya Hosokai,* Kosuke Anraku, Kohei Nakao, Ken Albrecht*
     Faraday Discuss. 2023, in press.
  • Thermally Activated Delayed Fluorescence Carbazole-Triazine Dendrimer with Bulky Substituents
    Hiroki Ikebe, Kohei Nakao, Eri Hisamura, Minori Furukori, Yasuo Nakayama, Takuya Hosokai,* Minlang Yang, Guanting Liu, Takuma Yasuda, Ken Albrecht* 　　　Aggregate 2023, e405(1-8).
  • Dendri-LEC Family: Establishing the Bright Future for Dendrimer Emitters in Traditional and Graphene-Based Light-Emitting Electrochemical Cells
    Luca M. Cavinato, Keiko Yamaoka, Sophia Lipinski, Vladimir Calvi, Dominique Wehenkel, Richard van Rijn, Ken Albrecht*, Rubén D. Costa*
     Adv. Funct. Mater. 2023, 33, 2302483(1-10).　Inside Cover of the Issue, Appeared in a news paper article(Nikkan Kogyo Shimbun May 29)
  • Carbazole-Dendronized Luminescent Radicals
    Rui Xiaotian, Wataru Ota, Tohru Sato, Minori Furukori, Yasuo Nakayama, Takuya Hosokai, Eri Hisamura, Kazuhiro Nakamura, Kenshiro Matsuda, Kohei Nakao, Andrew P. Monkman, Ken Albrecht*   
    Angew. Chem. Int. Ed. 2023, 62,  e20230255 (1-7). ​Back Cover of the Issue, Appeared in a news paper article (Kagaku Shimbun April 7)
  • Surface Modification of Gold by Carbazole Dendrimers for Improved Carbon Dioxide Electroreduction
    Sota Yoshida, Sampei Masaki, Naoto Todoroki*, Eri Hisamura, Kohei Nakao, Ken Albrecht, Toshimasa Wadayama   
    Chem. Commun. 2023, 59, 3459-3462.​

2022

  • Thermally Activated Delayed Fluorescence of Carbazole-Benzophenone Dendrimer with Bulky Substituents
    Ken Albrecht*, Eri Hisamura, Minori Furukori, Yasuo Nakayama, Takuya Hosokai*, Kohei Nakao, Hiroki Ikebe, Akira Nakayama 
    Polym. Chem. 2022, 13, 2277-2284.    Back Cover of the Issue​
  • Poly-phenylene jacketed tailor-made dendritic phenylazomethine ligand for nanoparticle synthesis
    Ken Albrecht*, Maki Taguchi, Takamasa Tsukamoto, Tatsuya Moriai, Nozomi Yoshida, Kimihisa Yamamoto* 
    Chem. Sci. 2022, 13, 5813-5817    . Cover of the Issue Most popular 2022 materials and energy articles
  • 3,6-Diphenyltetrazine as Cathode Active Material for Sodium Ion Batteries
    Jun Watanabe, Masaki Furusawa, Kosuke Nakamoto, Yuchao Sun, Masatoshi Tashima, Keiko Yamaoka, Seiko Fujiwara, Han Seul Kim, Shigeto Okada*, Ken Albrecht*
    Electrochemistry 2022, 90, 117005 (1-7). 
  • Photostability of luminescent tris(2,4,6‐trichlorophenyl)methyl radical enhanced by terminal modification of carbazole donor
    Kenshiro Matsuda, Xiaotian Rui, Kazuhiro Nakamura, Minori Furukori, Takuya Hosokai*, Kosuke Anraku, Kohei Nakao, Ken Albrecht* 
    Chem. Commun. 2022, 58, 13443-13446. Inside Front Cover of the Issue

2021

  • Metal atom–guided conformational analysis of single polynuclear coordination molecules
    Kenji Takada, Mari Morita,Takane Imaoka, Junko Kakinuma, Ken Albrecht, Kimihisa Yamamoto 
    Sci. Adv. 2021, 7, eabd9887(1-8).　Appeared in a news paper article (Nikkan Kogyo Shimbun Aug. 12, Kagaku Shimbun Sep. 10)
  • Enhanced electrochemical performance of Li2.72Na0.31MnPO4CO3 as a cathode material in “water-in-salt” electrolytes
    Baowei Xie, Ryo Sakamoto, Ayuko Kitajou, Liwei Zhao, Kosuke Nakamoto, Shigeto Okada, Ken Albrecht, Wataru Kobayashi, Masaki Okadae Toshiya Takahara 
    Chem. Commun., in press.​​​

2020

2019

  • Inkjet printing of thermally activated delayed fluorescence (TADF) dendrimer for OLEDs applications
    Amruth C, Beata Luszczynska, Marek Zdzislaw Szymanski, Jacek Ulanski, Ken Albrecht, KimihisaYamamoto
    Org. Electron. 2019, 74, 218-227
  • Nanosphere Formation of π-Conjugated Dendrimers by Simple Precipitation Method
    Ken Albrecht, Ken Minagawa, Sae Nakajima, Soh Kushida, Yohei Yamamoto, Akiyoshi Kuzume, Kimihisa Yamamoto
    Chem. Lett., 2019, 48, 1240-1243.    ​
  • Dendrimer-templated Synthesis and Characterization of Tin Oxide Quantum Dots Deposited on Silica Glass Substrate
    Yusuke Inomata, Ken Albrecht, Naoki Haruta, Kimihisa Yamamoto
    Chem. Mater., 2019, 31, 8373-8382.

2018

  • Size Dependent Oxidation state and CO Oxidation Activity of Tin Oxide Clusters
    Yusuke Inomata, Ken Albrecht, Kimihisa Yamamoto
    ACS Catal. 2018, 8, 451-456.
  • A fluorescent microporous crystalline dendrimer discriminates vapour molecules
    Sae Nakajima, Ken Albrecht, Soh Kushida, Eiji Nishibori, Takashi Kitao, Takashi Uemura, Kimihisa Yamamoto, Uwe H. F. Bunz, Yohei Yamamoto
    Chem. Commun. 2018, 54, 2534-2537. Appeared in a newspaper article (Kagakukogyo Nippo, March 5th).
  • A dendrimer emitter doped in a dendrimer host: efficient thermally activated delayed fluorescence OLEDs with fully-solution processed organic-layers
    K. Albrecht, K. Matsuoka, K. Fujita, K. Yamamoto
    Mater. Chem. Front. 2018, 2, 1097-1103.
  • Anisotropic convergence of dendritic macromolecules facilitated by a heteroleptic metal-organic polyhedron scaffold
    Kenichiro Omoto, Nobuhiko Hosono, Mika Gochomori, Ken Albrecht, Kimihisa Yamamoto, Susumu Kitagawa
    Chem. Commun. 2018, 54, 5209-5212.
  • Highly Efficient Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes with Fully Solution-Processed Organic Multilayered Architecture: Impact of Terminal-Substitution on Carbazole-Benzophenone Dendrimer and Interfacial Engineering
    Kenichi Matsuoka, Ken Albrecht, Akira Nakayama, Kimihisa Yamamoto, Katsuhiko Fujita
    ACS Appl. Mater. Interfaces 2018, 10, 33343-33352.
  • Single-molecule rectifiers based on voltage-dependent deformation of molecular orbitals in carbazole oligomers
    Ryo Yamada, Ken Albrecht, Tatsuhiko Ohto, Keigo Minode, Kimihisa Yamamoto, Hirokazu Tada
    Nanoscale 2018, 10, 19818-19824.

2017

  • A Polyaromatic Molecular Clip That Enables the Binding of Planar, Tubular, and Dendritic Compounds
    Keisuke Jono, Akira Suzuki, Munetaka Akita, Ken Albrecht, Kimihisa Yamamoto, Michito Yoshizawa
    Angew. Chem. Int. Ed. 2017, 56, 3570-3574.
  • Thermally activated delayed fluorescence OLEDs with fully solution processed organic layers exhibiting nearly 10% external quantum efficiency
    Ken Albrecht, Kenichi Matsuoka, Daisuke Yokoyama, Yoshiya Sakai, Akira Nakayama, Katsuhiko Fujita, Kimihisa Yamamoto
    Chem. Commun. 2017, 53, 2439-2442.    Most downloaded articles of 2017: Energy Chemistry
  • Mulifunctional Dendritic Emitter: Aggregation-Induced Emission Enhanced, Thermally Activated Delayed Fluorescent Material for Solution-Processed Multilayered Organic Light-Emitting Diodes
    Kenichi Matsuoka, Ken Albrecht, Kimihisa Yamamoto, Katsuhiko Fujita
    Sci. Rep. 2017, 7, 41780.    Top 100 in Chemistry
  • An ionic liquid that dissolves semiconducting polymers: a promising electrolyte for bright, efficient and stable light-emitting electrochemical cells
    Tomo Sakanoue, Fumihiro Yonekawa, Ken Albrecht, Kimihisa Yamamoto, Taishi Takenobu
    Chem. Mater. 2017, 29, 6122-6129.
  • Fabrication of sub-1 nm gap electrodes using metal-mask patterning and conductivity measurements of molecules in nanoscale spaces
    Yasuhisa Naitoh, Ken Albrecht, Qingshuo Wei, Kimihisa Yamamoto, Hisashi Shima, Takao Ishida
    RSC Adv. 2017, 7, 53503-53508.

2016

  • Polymerization of a divalent/tetravalent metal-storing atom-mimicking dendrimer
    K. Albrecht, Y. Hirabayashi, M. Otake, S. Mendori, Y. Tobari, Y. Azuma, Y. Majima, K. Yamamoto
    Sci. Adv. 2016, 2, e1601414(1-8).　    Appeared in newspaper articles (Nikkei Sangyo Shimbun, Dec. 8th, and Kagakukogyo Nippo, Dec. 8th). Appeared in several web sites.
  • Mono-Substituted Carbazole Dendrimers as Solution Processable Host Materials for Phosphorescent Organic Light-Emitting Diodes
    Kenichi Matsuoka, Ken Albrecht, Kimihisa Yamamoto, Katsuhiko Fujita
    J. Photopolym. Sci. Technol. 2016, 29, 323-326.

2015

  • Carbazole Dendrimers as Solution-Processable Thermally Activated Delayed-Fluorescence Materials
    Ken Albrecht, Kenichi Matsuoka, Katsuhiko Fujita, Kimihisa Yamamoto
    Angew. Chem. Int. Ed. 2015, 54, 5677-5682. Identified as a Highly Cited Paper (Top 1%, from 2016 Nov/Dec)
  • Effect of the Core Structure on the Sequential Coordination of Phenylazomethine Dendrimer
    Ken Albrecht, Noriko Sakane, Yusuke Inomata, Kimihisa Yamamoto
    J. Inorg. Organomet. Polym. 2015, 25, 133-139.

2014

  • Stepwise radial complexation from the outer- layer to the inner-layer of the dendritic ligand: Phenylazomethine dendrimer with an inverted coordination sequence
    Ken Albrecht, Noriko Sakane, Kimihisa Yamamoto
    Chem. Commun. 2014, 50, 12177-12180.
  • Synthesis and Properties of Nitrogen-Introduced Phenylazomethine Dendrimer
    Ken Albrecht, Hideyuki Higashimura, Kimihisa Yamamoto
    Synth. Commun. 2014, 44, 2239-2247.

2013

  • Magic Number Pt13 and Misshapen Pt12 Clusters: Which One is the Better Catalyst?
    Takane Imaoka, Hirokazu Kitazawa, Wang-Jae Chun, Saori Omura, Ken Albrecht, Kimihisa Yamamoto
    J. Am. Chem. Soc. 2013, 135, 13089-13095.
  • A fourth-generation carbazole–phenylazomethine dendrimer as a size-selective host for fullerenes
    Ken Albrecht, Yuto Kasai, Yasunori Kuramoto, Kimihisa Yamamoto
    Chem. Commun. 2013, 49, 865-867. Back Cover of the issue.
  • Dynamic control of dendrimer–fullerene association by axial coordination to the core
    Ken Albrecht, Yuto Kasai, Yasunori Kuramoto, Kimihisa Yamamoto
    Chem. Commun. 2013, 49, 6861-6863.

2012

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2008

2006