Keisuke Takuma

472 total citations
23 papers, 374 citations indexed

About

Keisuke Takuma is a scholar working on Materials Chemistry, Organic Chemistry and Physical and Theoretical Chemistry. According to data from OpenAlex, Keisuke Takuma has authored 23 papers receiving a total of 374 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Materials Chemistry, 8 papers in Organic Chemistry and 6 papers in Physical and Theoretical Chemistry. Recurrent topics in Keisuke Takuma's work include Porphyrin and Phthalocyanine Chemistry (7 papers), Photochemistry and Electron Transfer Studies (6 papers) and Synthesis and Properties of Aromatic Compounds (3 papers). Keisuke Takuma is often cited by papers focused on Porphyrin and Phthalocyanine Chemistry (7 papers), Photochemistry and Electron Transfer Studies (6 papers) and Synthesis and Properties of Aromatic Compounds (3 papers). Keisuke Takuma collaborates with scholars based in Japan and United States. Keisuke Takuma's co-authors include Taku Matsuo, Tetsuo Sakamoto, Yasuhiro Tsutsui, Hiroshi Kobayashi, Toshihiko Nagamura, Makoto Kajiwara, Masashi Tashiro, Shuntarō Mataka, Kazufumi Takahashi and Takaaki Sonoda and has published in prestigious journals such as The Journal of Physical Chemistry, The Journal of Organic Chemistry and Photochemistry and Photobiology.

In The Last Decade

Keisuke Takuma

22 papers receiving 355 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Keisuke Takuma Japan 13 179 136 106 77 72 23 374
AWH Mau 13 181 1.0× 154 1.1× 90 0.8× 58 0.8× 86 1.2× 26 423
CHIN‐TUNG LIN United States 6 226 1.3× 150 1.1× 147 1.4× 102 1.3× 103 1.4× 7 559
Thomas J. Meyer United States 8 245 1.4× 105 0.8× 174 1.6× 73 0.9× 74 1.0× 8 573
A. R. Gutiérrez United States 7 220 1.2× 185 1.4× 236 2.2× 82 1.1× 136 1.9× 17 592
Chris Tsiamis Greece 14 153 0.9× 149 1.1× 177 1.7× 64 0.8× 23 0.3× 40 522
David M. Klassen United States 11 255 1.4× 100 0.7× 134 1.3× 46 0.6× 27 0.4× 13 465
S. Ronco United States 10 159 0.9× 102 0.8× 142 1.3× 42 0.5× 53 0.7× 23 423
Eugene C. Johnson 8 207 1.2× 52 0.4× 137 1.3× 61 0.8× 40 0.6× 11 443
Marc W. Perkovic United States 15 304 1.7× 112 0.8× 180 1.7× 30 0.4× 52 0.7× 20 654
Donald C. Jackman United States 8 191 1.1× 80 0.6× 105 1.0× 35 0.5× 48 0.7× 20 401

Countries citing papers authored by Keisuke Takuma

Since Specialization
Citations

This map shows the geographic impact of Keisuke Takuma'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 Keisuke Takuma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keisuke Takuma more than expected).

Fields of papers citing papers by Keisuke Takuma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keisuke Takuma. 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 Keisuke Takuma. The network helps show where Keisuke Takuma may publish in the future.

Co-authorship network of co-authors of Keisuke Takuma

This figure shows the co-authorship network connecting the top 25 collaborators of Keisuke Takuma. A scholar is included among the top collaborators of Keisuke Takuma 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 Keisuke Takuma. Keisuke Takuma is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Takuma, Keisuke, et al.. (1991). Synthesis and Characteristics of Dichroic Dyes for Liquid Crystal Display.. Journal of Synthetic Organic Chemistry Japan. 49(5). 403–411. 2 indexed citations
2.
Takuma, Keisuke, et al.. (1991). ChemInform Abstract: Synthesis and Characteristics of Dichroic Dyes of Liquid Crystal Display. ChemInform. 22(51). 1 indexed citations
3.
Mataka, Shuntarō, Kazufumi Takahashi, Keisuke Takuma, et al.. (1987). [3.3]Orthocyclophanes with facing benzene and naphthalene rings. The Journal of Organic Chemistry. 52(13). 2653–2656. 31 indexed citations
4.
Mataka, Shuntarō, Kazufumi Takahashi, Keisuke Takuma, et al.. (1986). On the conformation of benzo-annelated bicyclo[4.4.1]undecanes, bicyclo[5.5.1]tridecanes, and a bicyclo[5.4.1]dodecane. The Journal of Organic Chemistry. 51(24). 4618–4622. 19 indexed citations
5.
Kobayashi, Hiroshi, et al.. (1985). Reactivity of halogen substituents of p-halogenoperfluoroanilines in acid media. Journal of Fluorine Chemistry. 27(1). 1–22. 13 indexed citations
6.
Mataka, Shuntarō, et al.. (1985). ChemInform Abstract: (3.3)ORTHOCYCLOPHANES HAVING VIS‐A‐VIS BENZENE RINGS. Chemischer Informationsdienst. 16(45). 1 indexed citations
7.
Takuma, Keisuke, et al.. (1985). Anion-catalyzed Phase-transfer Catalysis. II. Effects of Anionic Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate Catalyst in Phase-transfer-catalyzed Sulfonium Ylide Formation. Bulletin of the Chemical Society of Japan. 58(10). 3041–3042. 5 indexed citations
8.
Mataka, Shuntarō, et al.. (1985). [3.3]Orthocyclophanes having vis-à-vis benzene rings. Journal of the Chemical Society Chemical Communications. 973–973. 7 indexed citations
9.
Kaizu, Youkoh, et al.. (1985). Lifetimes of the lowest excited state of tris(2,2′-bipyridine)ruthenium(II) and its amphipathic derivative in micellar systems. Journal of Photochemistry. 30(1). 93–103. 22 indexed citations
10.
Takuma, Keisuke, et al.. (1984). AN EFFECT OF TRIFLUOROMETHYL GROUP ON PHOTOSENSITIZING BEHAVIOR OF BENZOPHENONE DERIVATIVES. Chemistry Letters. 13(6). 881–884.
11.
Takuma, Keisuke, et al.. (1984). ortho-Disubstituted F-Benzenes. V. Intramolecular Heteroatom-facilitated ortho-Substitution of F-Benzene Derivatives with Oxazolinyl and Oxazinyl Groups. Bulletin of the Chemical Society of Japan. 57(1). 225–231. 7 indexed citations
12.
Takuma, Keisuke, Takaaki Sonoda, & Hiroshi Kobayashi. (1984). REDOX BEHAVIOR OF METHYLVIOLOGEN CATION RADICAL INCORPORATED INTO A HYDROPHOBIC ORGANIC PHASE BY LIPOPHILIC STABLE ANIONS. Chemistry Letters. 13(2). 243–246. 2 indexed citations
13.
14.
15.
Takuma, Keisuke, et al.. (1981). Novel properties of the self-assembling amphipathic viologen system. 1. A study of electron-exchange reactions in micellar systems. The Journal of Physical Chemistry. 85(6). 619–621. 19 indexed citations
16.
Nagamura, Toshihiko, Keisuke Takuma, Yasuhiro Tsutsui, & Taku Matsuo. (1980). PHOTOINDUCED ELECTRON TRANSFER BETWEEN AMPHIPATHIC RUTHENIUM(II) COMPLEX AND N,N-DIMETHYLANILINE IN SYNTHETIC BILAYER MEMBRANES AND PHOSPHOLIPID LIPOSOMES. Chemistry Letters. 9(5). 503–506. 15 indexed citations
17.
Matsuo, Taku, et al.. (1980). A CONCERTED TWO-STEP ACTIVATION OF PHOTOINDUCED ELECTRON-TRANSPORT ACROSS LIPID MEMBRANE. Chemistry Letters. 9(8). 1009–1012. 28 indexed citations
18.
Tsutsui, Yasuhiro, et al.. (1979). PHOTOREDUCTION AND REDOX CATALYSIS OF AN AMPHIPATHIC DERIVATIVE OF TRIS (2,2′-BIPYRIDINE)RUTHENIUM(II) AT THE MICELLAR SURFACE. Chemistry Letters. 8(6). 617–620. 19 indexed citations
19.
Kano, Koji, et al.. (1978). ZINC TETRAPHENYLPORPHYRIN‐SENSITIZED PHOTOREDUCTION OF ANTHRAQUINONESULFONATE IN AQUEOUS MICELLAR SOLUTIONS*. Photochemistry and Photobiology. 27(6). 695–701. 32 indexed citations
20.
Takuma, Keisuke, Makoto Kajiwara, & Taku Matsuo. (1977). STUDIES ON PHOTOACTIVATED ELECTRON-TRANSPORT SYSTEMS. I. REDUCTION OF HEMIN AND ANTHRAQUINONESULFONATE AS MEDIATED BY PYRIDINIUM IONS AND PHOTOEXCITED RUTHENIUM(II) COMPLEXES. Chemistry Letters. 6(10). 1199–1202. 31 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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