Nature Search

Liquid crystalline 2D borophene oxide for inorganic optical devices

Borophene exhibits attractive electronic and optical properties, but its instability has so far limited its applications. Here, the authors report the synthesis of a liquid-state borophene analogue showing a good thermal stability up to 350 °C and an electrically-controlled optical switching behaviour.

Tetsuya Kambe
Shotaro Imaoka
Kimihisa Yamamoto
ResearchOpen Access24 Feb 2022
Nature Communications

Volume: 13, P: 1-6
Periodicity of molecular clusters based on symmetry-adapted orbital model

Prediction of stable clusters based on the jellium model is limited because of the usual assumption of their spherical symmetry. Here the authors propose a symmetry adapted orbital model by quantum chemistry calculations for the prediction of stable clusters with various shapes that obey a certain periodicity.

Takamasa Tsukamoto
Naoki Haruta
Kimihisa Yamamoto
ResearchOpen Access19 Aug 2019
Nature Communications

Volume: 10, P: 1-8
Nanomaterials design for super-degenerate electronic state beyond the limit of geometrical symmetry

No substances with greater degrees of degeneracy than spherical atoms are known, due to geometrical limitations. In this work the authors combine density functional theory and tight-binding models to predict metal clusters with higher-fold degeneracies than spherical atoms, which are ascribed to dynamical symmetry.

Naoki Haruta
Takamasa Tsukamoto
Kimihisa Yamamoto
ResearchOpen Access14 Sept 2018
Nature Communications

Volume: 9, P: 1-6
Atom-hybridization for synthesis of polymetallic clusters

Multimetallic clusters are difficult to synthesize with control over elemental composition and organization. Here, the authors use dendrimers to precisely template the formation of five-element sub-nanoclusters, providing an elegant route to otherwise-inaccessible multinary compounds.

Takamasa Tsukamoto
Tetsuya Kambe
Kimihisa Yamamoto
ResearchOpen Access24 Sept 2018
Nature Communications

Volume: 9, P: 1-7
Solution-phase synthesis of Al₁₃ ⁻ using a dendrimer template

Superatoms—clusters that exhibit some of the properties of elemental atoms—could serve as building blocks for functional materials, but their synthesis outside of the gas phase is highly challenging. Here, the authors use a dendrimer template to successfully produce Al₁₃ ⁻ in solution.

Tetsuya Kambe
Naoki Haruta
Kimihisa Yamamoto
ResearchOpen Access11 Dec 2017
Nature Communications

Volume: 8, P: 1-7
Beneficial Effect of T-Type Calcium Channel Blockers on Endothelial Function in Patients with Essential Hypertension

Tetsuya Oshima
Ryoji Ozono
Masayuki Kambe
Research01 Nov 2005
Hypertension Research

Volume: 28, P: 889-894
Capacitance enhancement by ion-laminated borophene-like layered materials

Liquid crystals with a single-layered boron network and interlayer alkali cations have been developed to enhance capacity between electrodes. Their switching functionality via phase transitions has also been demonstrated.

Tetsuya Kambe
Masahiro Katakura
Kimihisa Yamamoto
ResearchOpen Access27 Jan 2025
Nature Communications

Volume: 16, P: 1-8
Iron-complex-based catalytic system for high-performance water oxidation in aqueous media

While water oxidation is the key reaction in natural and artificial photosynthesis, it is kinetically and thermodynamically sluggish, so constructing a molecular system in aqueous media remains challenging. Here, the authors report highly efficient water oxidation in aqueous media via electrochemical polymerisation of a pentanuclear iron complex.

Takumi Matsuzaki
Kento Kosugi
Shigeyuki Masaoka
ResearchOpen Access05 Mar 2025
Nature Communications

Volume: 16, P: 1-11
Differential Impact of Family History on Age-Associated Increase in the Prevalence of Hypertension and Diabetes in Male Japanese Workers

Taizan Shirakawa
Ryoji Ozono
Masayuki Kambe
Research01 Feb 2006
Hypertension Research

Volume: 29, P: 81-87
Role of the Angiotensin II Type 2 Receptor in Arterial Remodeling after Wire Injury in Mice

Yoshiyuki Yamamoto
Yuichiro Watari
Ryoji Ozono
Research01 Jun 2008
Hypertension Research

Volume: 31, P: 1241-1249
Reduced Expression of Heme Oxygenase-1 in Patients with Coronary Atherosclerosis

Andrei Brydun
Yuichiro Watari
Ryoji Ozono
Research01 Apr 2007
Hypertension Research

Volume: 30, P: 341-348
Impact of tree canopy cover on the local thermal environments at the Angkor temples of Cambodia

Tetsuya Waragai
ResearchOpen Access01 Jul 2025
Scientific Reports

Volume: 15, P: 1-14
Modern cluster design based on experiment and theory

Theoretical models of clusters that account for molecular symmetry offer guidelines for their design. This Perspective describes the models and how we can synthesize the clusters thus designed.

Takamasa Tsukamoto
Tetsuya Kambe
Kimihisa Yamamoto
Reviews24 Mar 2021
Nature Reviews Chemistry

Volume: 5, P: 338-347
Functionalization of phenylazomethine dendrimers

Our recent progress on the phenylazomethine dendrimers to afford advanced functionalities due to the π-conjugated azomethine structure and electronic state are reviewed. The functions include luminous dendrimers by bismuth assembly, Y-shape recognition using porphyrin core, and atomicity-controlled template of metal salts on imine parts. The precisely controlled template ability developed synthesis of multimetallic subnanoparticles and superatoms that can mimic the properties of elemental atoms.

Tetsuya Kambe
Kimihisa Yamamoto
Reviews15 Oct 2021
Polymer Journal

Volume: 54, P: 97-105
Development of a red fluorescent protein-based cGMP indicator applicable for live-cell imaging

A red fluorescent protein-based indicator of cyclic guanosine 3′, 5′-monophosphate (cGMP) allows for multi-colour imaging and optogenetic applications while monitoring cGMP activity in cells.

Mai Takizawa
Yuri Osuga
Takashi Tsuboi
ResearchOpen Access05 Sept 2022
Communications Biology

Volume: 5, P: 1-9

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