Yoshiharu Usui

1.5k total citations
58 papers, 1.3k citations indexed

About

Yoshiharu Usui is a scholar working on Organic Chemistry, Physical and Theoretical Chemistry and Materials Chemistry. According to data from OpenAlex, Yoshiharu Usui has authored 58 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Organic Chemistry, 22 papers in Physical and Theoretical Chemistry and 21 papers in Materials Chemistry. Recurrent topics in Yoshiharu Usui's work include Photochemistry and Electron Transfer Studies (21 papers), Porphyrin and Phthalocyanine Chemistry (10 papers) and Radical Photochemical Reactions (9 papers). Yoshiharu Usui is often cited by papers focused on Photochemistry and Electron Transfer Studies (21 papers), Porphyrin and Phthalocyanine Chemistry (10 papers) and Radical Photochemical Reactions (9 papers). Yoshiharu Usui collaborates with scholars based in Japan, Netherlands and India. Yoshiharu Usui's co-authors include Masao Koizumi, Leonard I. Grossweiner, Akihiro Wakisaka, Yuki Fujii, Osamu Ito, Toshifumi Konishi, Katsumi Tokumaru, Mamoru Fujitsuka, Hiroko Nakamura and Hiroaki Misawa and has published in prestigious journals such as Macromolecules, Chemical Communications and The Journal of Physical Chemistry.

In The Last Decade

Yoshiharu Usui

57 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Yoshiharu Usui Japan 22 460 439 364 268 184 58 1.3k
H.‐D. Brauer Germany 23 728 1.6× 802 1.8× 596 1.6× 170 0.6× 359 2.0× 107 1.7k
V. Malatesta Italy 25 1.0k 2.2× 995 2.3× 357 1.0× 254 0.9× 89 0.5× 110 2.2k
John R. Harbour Canada 16 415 0.9× 646 1.5× 242 0.7× 296 1.1× 116 0.6× 49 1.8k
G. David Mendenhall United States 25 886 1.9× 297 0.7× 277 0.8× 168 0.6× 70 0.4× 85 1.6k
Ayman A. Abdel‐Shafi Egypt 23 412 0.9× 876 2.0× 397 1.1× 144 0.5× 270 1.5× 64 1.5k
G. Richard Geier United States 27 528 1.1× 1.3k 3.1× 152 0.4× 407 1.5× 172 0.9× 57 1.8k
Shizunobu Hashimoto Japan 19 615 1.3× 464 1.1× 211 0.6× 266 1.0× 79 0.4× 101 1.2k
M. Consuelo Cuquerella Spain 18 421 0.9× 305 0.7× 221 0.6× 521 1.9× 198 1.1× 48 1.3k
Mauro Giustini Italy 19 460 1.0× 297 0.7× 165 0.5× 425 1.6× 59 0.3× 63 1.1k
Michel Julliard France 17 420 0.9× 342 0.8× 168 0.5× 141 0.5× 212 1.2× 45 913

Countries citing papers authored by Yoshiharu Usui

Since Specialization
Citations

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

Fields of papers citing papers by Yoshiharu Usui

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Yoshiharu Usui

This figure shows the co-authorship network connecting the top 25 collaborators of Yoshiharu Usui. A scholar is included among the top collaborators of Yoshiharu Usui 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 Yoshiharu Usui. Yoshiharu Usui 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.
Tachikawa, Takashi, Yasuhiro Kobori, Kimio Akiyama, et al.. (2002). Solvent effects on the intrinsic enhancement factors of the triplet exciplex generated by photoinduced electron transfer reaction between eosin Y and duroquinone. Molecular Physics. 100(9). 1413–1420. 13 indexed citations
2.
Wakisaka, Akihiro, et al.. (2001). Solute-solvent and solvent-solvent interactions evaluated through clusters isolated from solutions: Preferential solvation in water-alcohol mixtures. Journal of Molecular Liquids. 90(1-3). 175–184. 112 indexed citations
3.
Suzuki, Sho, et al.. (1999). Solvent extraction of technetium(VII) by cyclic amides. Journal of Radioanalytical and Nuclear Chemistry. 239(2). 377–380. 8 indexed citations
4.
Kawasaki, Toshio, Toshihide Kamata, Hirobumi Ushijima, et al.. (1999). Effects of diamine bridge length and substituents on the spectral properties of N,N ′-bis(α-substituted salicylidene)diamines in solution. Journal of the Chemical Society Perkin Transactions 2. 193–198. 15 indexed citations
5.
Komatsu, Atsushi, Yuki Fujii, Yoshiharu Nakano, et al.. (1997). Synthesis of New Cationic Schiff Base Complexes of Copper(II) and Their Selective Binding with DNA. Bulletin of the Chemical Society of Japan. 70(3). 615–629. 25 indexed citations
6.
Amimoto, Tsuyoshi, et al.. (1994). Extraction Equilibrium of Molybdenum(VI) with Several Alkylated 8-Quinolinol Derivatives. Analytical Sciences. 10(5). 749–753. 13 indexed citations
7.
Ohashi, Kousaburo, et al.. (1990). Emission Properties of Ternary Complexes of Europium(III)-β-Diketone-Trioctylphosphine Oxide. Analytical Sciences. 6(6). 827–831. 8 indexed citations
8.
Usui, Yoshiharu, et al.. (1988). Photosensitized Reduction of Methylviologen through the Energy Transfer from Triplet Dyes to 9-Anthracenecarboxylate Anion. Bulletin of the Chemical Society of Japan. 61(9). 3335–3337. 8 indexed citations
9.
Misawa, Hiroaki, Hirochika Sakuragi, Yoshiharu Usui, & Katsumi Tokumaru. (1983). PHOTOSENSITIZING ACTION OF EOSIN Y FOR VISIBLE LIGHT INDUCED HYDROGEN EVOLUTION FROM WATER. Chemistry Letters. 12(7). 1021–1024. 41 indexed citations
10.
Usui, Yoshiharu, et al.. (1982). The Photoreduction and Photosensitized Reduction of Dyes Bound to a Surfactant Micellar Surface. Bulletin of the Chemical Society of Japan. 55(10). 3302–3307. 6 indexed citations
11.
Kikuchi, Kôichi, et al.. (1981). Determination of the S*—T transition probabilities of some acridine dyes and of thiopyronine by the method of sensitized delayed fluorescence. Journal of Photochemistry. 16(1). 19–29. 11 indexed citations
12.
Usui, Yoshiharu, et al.. (1979). . NIPPON KAGAKU KAISHI. 1636–1639.
13.
Usui, Yoshiharu, et al.. (1979). MIGRATION OF SINGLET EXCITATION ENERGY FROM ACRIDINE ORANGE‐10‐DODECYL BROMIDE TO METHYLENE BLUE IN MICELLES. Photochemistry and Photobiology. 29(1). 165–167. 11 indexed citations
14.
Usui, Yoshiharu, et al.. (1974). A STANDARD SYSTEM TO DETERMINE THE QUANTUM YIELD OF SINGLET OXYGEN FORMATION IN AQUEOUS SOLUTION. Photochemistry and Photobiology. 19(3). 245–247. 90 indexed citations
15.
Usui, Yoshiharu. (1973). DETERMINATION OF QUANTUM YIELD OF SINGLET OXYGEN FORMATION BY PHOTOSENSITIZATION. Chemistry Letters. 2(7). 743–744. 100 indexed citations
16.
17.
Okuda, Michio, et al.. (1968). Studies on the Radical Species in Solid Methylene Blue as Revealed from the ESR Spectra. Bulletin of the Chemical Society of Japan. 41(10). 2274–2280. 3 indexed citations
18.
Usui, Yoshiharu, et al.. (1967). The Occurrence of a D–D Mechanism in the Ethanol Solution of Eosine. Bulletin of the Chemical Society of Japan. 40(5). 1035–1040. 10 indexed citations
19.
Usui, Yoshiharu & Masao Koizumi. (1967). An Interpretation of the Photochemical Behavior of a Dye-Reducing Agent-Oxygen System on the Basis of a Switch-over of the Primary Processes. Bulletin of the Chemical Society of Japan. 40(3). 440–446. 21 indexed citations
20.
Usui, Yoshiharu, et al.. (1965). Switch-over of the Mechanism of the Primary Processes in the Photo-oxidation of Xanthene Dyes as Revealed by the Oxygen Consumption Experiments. Bulletin of the Chemical Society of Japan. 38(6). 1015–1022. 42 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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