Sumio Ishikawa

530 total citations
35 papers, 398 citations indexed

About

Sumio Ishikawa is a scholar working on Organic Chemistry, Materials Chemistry and Molecular Biology. According to data from OpenAlex, Sumio Ishikawa has authored 35 papers receiving a total of 398 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Organic Chemistry, 12 papers in Materials Chemistry and 9 papers in Molecular Biology. Recurrent topics in Sumio Ishikawa's work include Phenothiazines and Benzothiazines Synthesis and Activities (7 papers), Photochromic and Fluorescence Chemistry (7 papers) and Synthesis and Properties of Aromatic Compounds (6 papers). Sumio Ishikawa is often cited by papers focused on Phenothiazines and Benzothiazines Synthesis and Activities (7 papers), Photochromic and Fluorescence Chemistry (7 papers) and Synthesis and Properties of Aromatic Compounds (6 papers). Sumio Ishikawa collaborates with scholars based in Japan, Taiwan and United States. Sumio Ishikawa's co-authors include Tetsuo Nozoe, Hidetsugu Wakabayashi, Teruo Kurihara, Shigeru Morita, Chi‐Phi Wu, Nobuhiro Takahashi, Yoshihisa Suzuki, Kazuko Nakajo, Y. Iwami and Takuya Ueno and has published in prestigious journals such as Journal of the American Chemical Society, Bulletin of the Chemical Society of Japan and Chemistry Letters.

In The Last Decade

Sumio Ishikawa

35 papers receiving 375 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Sumio Ishikawa Japan 11 198 84 46 43 37 35 398
Keiko Yoda Japan 10 73 0.4× 123 1.5× 17 0.4× 26 0.6× 49 1.3× 24 421
Mark A. Shand United States 7 38 0.2× 234 2.8× 8 0.2× 29 0.7× 7 0.2× 8 436
Ralf Moritz Germany 7 67 0.3× 65 0.8× 4 0.1× 160 3.7× 22 0.6× 14 489
Krista L. Rule United States 7 79 0.4× 39 0.5× 3 0.1× 60 1.4× 7 0.2× 8 653
Reuven Azoury Israel 11 21 0.1× 82 1.0× 11 0.2× 37 0.9× 13 0.4× 21 386
Yuichiro Takamatsu Japan 13 279 1.4× 69 0.8× 3 0.1× 101 2.3× 1 0.0× 31 446
K. K. Narang India 13 256 1.3× 156 1.9× 3 0.1× 20 0.5× 52 513
Saurabh Kumar India 14 119 0.6× 95 1.1× 8 0.2× 78 1.8× 1 0.0× 56 520
Guoshun Zhang China 12 37 0.2× 106 1.3× 2 0.0× 68 1.6× 51 422
Susithra Selvam India 11 73 0.4× 46 0.5× 3 0.1× 100 2.3× 20 333

Countries citing papers authored by Sumio Ishikawa

Since Specialization
Citations

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

Fields of papers citing papers by Sumio Ishikawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Sumio Ishikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Sumio Ishikawa. A scholar is included among the top collaborators of Sumio Ishikawa 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 Sumio Ishikawa. Sumio Ishikawa 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.
Nakajo, Kazuko, Sumio Ishikawa, Takuya Ueno, et al.. (2006). Resistance to acidic and alkaline environments in the endodontic pathogen Enterococcus faecalis. Oral Microbiology and Immunology. 21(5). 283–288. 73 indexed citations
2.
Kurihara, Teruo, Takanori Suzuki, Hidetsugu Wakabayashi, et al.. (1996). Electronic Structures and Oxidation Potentials of Some Azulene Derivatives. Bulletin of the Chemical Society of Japan. 69(7). 2003–2008. 19 indexed citations
3.
Dokiya, Yukiko, et al.. (1995). Long Range Transport of Sulfur Compounds over the Western North Pacific : Deposition Samples Obtained on Islands. Journal of the Meteorological Society of Japan Ser II. 73(5). 873–881. 17 indexed citations
4.
Wakabayashi, Hidetsugu, et al.. (1994). Synthesis of Tris- and Tetrakis(tropocoronand)s Having Short Linker Chains. Heterocycles. 39(2). 639–639. 3 indexed citations
5.
Wakabayashi, Hidetsugu, et al.. (1993). One-Pot Synthesis of Tetraazabis(tropocoronand)s and Podands from Benzo[b]cyclohept[e][1,4]oxazine and α,ω-Polymethylenediamines. Bulletin of the Chemical Society of Japan. 66(10). 2941–2948. 5 indexed citations
6.
Kurihara, Teruo, Sumio Ishikawa, & Tetsuo Nozoe. (1992). Stability and Resonance Energy of Azulenequinones and the Rule for Topological Charge Stabilization. Bulletin of the Chemical Society of Japan. 65(4). 1151–1153. 4 indexed citations
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Wakabayashi, Hidetsugu, et al.. (1991). A Convenient, One-Pot Azulene Synthesis from 2H-Cyclohepta[b]furan-2-ones with Vinyl Ether and Its Analogues III. Orthoesters as a reagent. Heterocycles. 32(2). 213–213. 25 indexed citations
11.
Wakabayashi, Hidetsugu, et al.. (1990). A Convenient, One-Pot Azulene Synthesis from Cyclohepta[b]furan-2-ones and Vinyl Ether and Its Analogues. (II). Acetals as Reagent. Heterocycles. 31(1). 17–17. 18 indexed citations
12.
Nozoe, Tetsuo, et al.. (1989). Facile Shifts of Bromine Atom on C-3 Position of Guaiazulene and Synthesis of Variously Functionalized Azulenes Using These Reactions. Chemistry Letters. 18(2). 353–356. 4 indexed citations
13.
Ishikawa, Sumio, et al.. (1989). Cyclohepta[b][1,4]benzothiazines and Their Diazine Analogues. 2. Formation and Properties of Cyclohepta[b]quinoxalines. Bulletin of the Chemical Society of Japan. 62(4). 1158–1166. 9 indexed citations
14.
Nozoe, Tetsuo, et al.. (1989). Synthesis and Rections of 2,3-Dihydrocyclohepta[b][1,4]thiazines and 2,3-Dihydro-1H-cyclohepta[b]pyrazines. Heterocycles. 28(2). 733–733. 3 indexed citations
15.
Wakabayashi, Hidetsugu, Tetsuo Nozoe, & Sumio Ishikawa. (1989). Reactions of 5-Bromo-2-methoxytropone and 8-Bromo- and 6,8-Dibromocyclohepta[b][1,4]benzoxazines with o-Aminophenol. Heterocycles. 29(6). 1005–1005. 3 indexed citations
16.
Nozoe, Tetsuo, et al.. (1988). Novel Intermolecular Heterocycle Exchange Reaction of Cyclohepta[b][1,4]benzoxazines and Their S-Analogs with 1,2-Bifunctional Reagents. Chemistry Letters. 17(10). 1593–1596. 3 indexed citations
17.
Ishikawa, Sumio, et al.. (1987). Partially unroofed coronary sinus associated with tricuspid atresia An important associated lesion in the Fontan operation. European Journal of Cardio-Thoracic Surgery. 1(3). 180–182. 4 indexed citations
18.
Harada, Nobuyuki, et al.. (1987). Absolute stereostructure of novel chiral troponoid spiro compounds as determined by theoretical calculation of CD spectra. Journal of the American Chemical Society. 109(6). 1661–1665. 7 indexed citations
19.
Wakabayashi, Hidetsugu, et al.. (1985). Intermolecular Bromine Transfer of 2-Amino-7-bromotropone Derivatives Catalyzed by Strong Acid. Bulletin of the Chemical Society of Japan. 58(10). 2840–2843. 6 indexed citations
20.

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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