Masaaki Kojima

5.0k total citations
195 papers, 4.5k citations indexed

About

Masaaki Kojima is a scholar working on Oncology, Inorganic Chemistry and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, Masaaki Kojima has authored 195 papers receiving a total of 4.5k indexed citations (citations by other indexed papers that have themselves been cited), including 118 papers in Oncology, 94 papers in Inorganic Chemistry and 88 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in Masaaki Kojima's work include Metal complexes synthesis and properties (117 papers), Magnetism in coordination complexes (86 papers) and Metal-Catalyzed Oxygenation Mechanisms (53 papers). Masaaki Kojima is often cited by papers focused on Metal complexes synthesis and properties (117 papers), Magnetism in coordination complexes (86 papers) and Metal-Catalyzed Oxygenation Mechanisms (53 papers). Masaaki Kojima collaborates with scholars based in Japan, France and United Kingdom. Masaaki Kojima's co-authors include Naohide Matsumoto, Kiyohiko Nakajima, Junnosuke Fujita, Yukinari Sunatsuki, Seiichiro Iijima, Yuzo Yoshikawa, Françoise Dahan, Masanobu Tsuchimoto, Masakazu Hirotsu and Yuichi Ikuta and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and Chemical Communications.

In The Last Decade

Masaaki Kojima

193 papers receiving 4.4k citations

Peers

Masaaki Kojima

EOMM

ONCOL

Eva Rentschler Germany

Marie‐Noëlle Collomb France

Rafael Ruiz-Garcı́a Spain

Francisco M. Romero Spain

G.A. Abakumov Russia

George E. Κostakis Germany

F.F. De Biani Italy

Fu‐Pei Liang China

Yan Z. Voloshin Russia

Françoise Dahan France

Eva Rentschler Germany

Masaaki Kojima

2.4k ×1.0

3.6k ×1.6

EOMM

2.8k ×1.4

1.6k ×1.0

ONCOL

1.3k ×1.0

Citations per year, relative to Masaaki Kojima Masaaki Kojima (= 1×) peers Eva Rentschler

Countries citing papers authored by Masaaki Kojima

Since Specialization

Citations

This map shows the geographic impact of Masaaki Kojima's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Masaaki Kojima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masaaki Kojima more than expected).

Fields of papers citing papers by Masaaki Kojima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masaaki Kojima. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Masaaki Kojima. The network helps show where Masaaki Kojima may publish in the future.

Co-authorship network of co-authors of Masaaki Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Masaaki Kojima. A scholar is included among the top collaborators of Masaaki Kojima based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Masaaki Kojima. Masaaki Kojima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Wada, Koki, et al.. (2024). The effect of solvent molecules on crystallisation of heterotrinuclear M^II–Tb^III–M^II complexes with tripodal nonadentate ligands. CrystEngComm. 26(7). 1004–1014. 2 indexed citations

Wada, Koki, et al.. (2023). Crystallization Behavior of Heterotrinuclear Zn^II–Ln^III–Zn^II Complexes Bearing Two Tripodal Nonadentate Ligands: Possibility for Absolute Spontaneous Resolution. Crystal Growth & Design. 23(7). 5244–5256. 2 indexed citations

Suzuki, Takayoshi, et al.. (2013). Comparison of ancillary ligand effects between 2,2′-bipyridine and 2-(2′-pyridyl)phenyl in the linkage and bridging isomerism of 5-methyltetrazolato iridium(iii) and/or rhodium(iii) complexes. Dalton Transactions. 42(40). 14556–14556. 11 indexed citations

Suzuki, Takayoshi, et al.. (2013). Molecular structure and spectroscopic properties of [Co(Me2dtc)2{(Ph2PO)2BF2}] (Me2dtc =N,N-dimethyldithiocarbamate). Inorganica Chimica Acta. 410. 122–125. 2 indexed citations

Sunatsuki, Yukinari, Tomoka Yamaguchi, Takayoshi Suzuki, et al.. (2011). A single tripodal ligand stabilizing three different oxidation states (II, III, and IV) of manganese. Chemical Communications. 47(32). 9149–9149. 17 indexed citations

Hagiwara, Hiroaki, Takeshi Fujinami, Naohide Matsumoto, et al.. (2010). Conformational effect of a spin crossover iron(II) complex: Bis[N-(2-methylimidazol-4-yl)methylidene-2-aminoethyl]propanediamineiron(II) perchlorate. Inorganica Chimica Acta. 367(1). 141–150. 12 indexed citations

Nishihara, Yasushi, et al.. (2009). Enantioseparation of doubly functionalized polar norbornenes by HPLC and their ruthenium‐catalyzed ring‐opening metathesis polymerization. Journal of Polymer Science Part A Polymer Chemistry. 48(2). 485–491. 12 indexed citations

Hirotsu, Masakazu, Naoto Kuwamura, Isamu Kinoshita, et al.. (2009). Steric, geometrical and solvent effects on redox potentials in salen-type copper(ii) complexes. Dalton Transactions. 7678–7678. 26 indexed citations

Costes, Jean‐Pierre, Tomoka Yamaguchi, Masaaki Kojima, & Laure Vendier. (2009). Experimental Evidence for the Participation of 5d Gd^IIIOrbitals in the Magnetic Interaction in Ni−Gd Complexes. Inorganic Chemistry. 48(12). 5555–5561. 74 indexed citations

10.

Suzuki, Takayoshi, et al.. (2008). Surface tension reduction (STR) in aqueous solutions of anionic surfactants with cobalt(III) complexes. Journal of Colloid and Interface Science. 332(1). 194–200. 1 indexed citations

11.

Nakamura, Hirofumi, et al.. (2008). Cobalt(III) Complexes of a Tripodal Ligand Containing Three Imidazole Groups: Properties and Structures of Racemic and Optically Active Species. European Journal of Inorganic Chemistry. 2008(8). 1258–1267. 12 indexed citations

12.

Yamaguchi, Tomoka, Hiromi Ohta, Yukinari Sunatsuki, et al.. (2006). Ferro- and antiferromagnetic interactions in face-sharing trioctahedral Ni^IIMn^IINi^IIand Ni^IIFe^IIINi^IIcomplexes with the same 1–5/2–1 spin system. Chemical Communications. 1950–1952. 27 indexed citations

13.

Yamada, Masahiro, Hiroaki Hagiwara, Naohide Matsumoto, et al.. (2006). A Variety of Spin‐Crossover Behaviors Depending on the Counter Anion: Two‐Dimensional Complexes Constructed by NH⋅⋅⋅Cl⁻ Hydrogen Bonds, [Fe^IIH₃L^Me]Cl⋅X (X = PF₆⁻, AsF₆⁻, SbF₆⁻, CF₃SO₃⁻; H₃L^Me = Tris[2‐{[(2‐methylimidazol‐4‐yl)methylidene]amino}ethyl]amine). Chemistry - A European Journal. 12(17). 4536–4549. 164 indexed citations

14.

Yamaguchi, Tomoka, Yukinari Sunatsuki, Masaaki Kojima, et al.. (2004). Ferromagnetic Ni^II–Gd^IIIinteractions in complexes with NiGd, NiGdNi, and NiGdGdNi cores supported by tripodal ligands. Chemical Communications. 1048–1049. 70 indexed citations

15.

Sunatsuki, Yukinari, et al.. (2001). Hydrogen-bonded extended structure of the 1∶3 adduct of a C3 symmetric cobalt(iii) complex with a tripod-ligand involving three imidazolate groups and hydroquinone or resorcinol. Chemical Communications. 14–15. 21 indexed citations

16.

Michiwaki, Yukihiro, et al.. (2000). Influence of Hardness of the Test Material on the Swallowing Function.. 49(1). 7–10. 1 indexed citations

17.

Ohno, Kazushige, et al.. (1999). SiC Diesel Particulate Filter Application to Electric Heater System. SAE technical papers on CD-ROM/SAE technical paper series. 1. 8 indexed citations

18.

Hirotsu, Masakazu, Masaaki Kojima, & Yuzo Yoshikawa. (1997). Mononuclear and Mixed-Valence Trinuclear Manganese Complexes Containing Tripodal Tetradentate Ligands. Phenolato, Carboxylato, and Alkoxo Bridges. Bulletin of the Chemical Society of Japan. 70(3). 649–657. 34 indexed citations

19.

Hirotsu, Masakazu, Masaaki Kojima, Kiyohiko Nakajima, Setsuo Kashino, & Yuzo Yoshikawa. (1994). Steric Control of Redox Potentials of Cobalt(II) Schiff Base Complexes with Phenyl Substituents. Chemistry Letters. 23(11). 2183–2186. 6 indexed citations

20.

Nakajima, Kiyohiko, Masaaki Kojima, Miho Fujita, & Junnosuke Fujita. (1984). Chromatographic separation of the diastereomers of the bis(2,4-pentanedionato)[2-(methylseleno)ethylamine]-cobalt(III) ion on a column of sulphoethyl-toyopearl and determination of the rate of inversion at the selenium atom. Journal of Chromatography A. 301. 241–246. 12 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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