Naoki Umezawa

3.5k total citations · 1 hit paper
74 papers, 3.0k citations indexed

About

Naoki Umezawa is a scholar working on Molecular Biology, Organic Chemistry and Materials Chemistry. According to data from OpenAlex, Naoki Umezawa has authored 74 papers receiving a total of 3.0k indexed citations (citations by other indexed papers that have themselves been cited), including 48 papers in Molecular Biology, 24 papers in Organic Chemistry and 22 papers in Materials Chemistry. Recurrent topics in Naoki Umezawa's work include Porphyrin and Phthalocyanine Chemistry (15 papers), Chemical Synthesis and Analysis (14 papers) and DNA and Nucleic Acid Chemistry (11 papers). Naoki Umezawa is often cited by papers focused on Porphyrin and Phthalocyanine Chemistry (15 papers), Chemical Synthesis and Analysis (14 papers) and DNA and Nucleic Acid Chemistry (11 papers). Naoki Umezawa collaborates with scholars based in Japan, United States and Slovakia. Naoki Umezawa's co-authors include Tsunehiko Higuchi, Tetsuo Nagano, Samuel H. Gellman, Akemi Ryu, Kumi Arakane, Yasuteru Urano, Kazuya Kikuchi, Nobuki Kato, Toshiki Masumizu and Naoki Miyata and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and The Journal of Chemical Physics.

In The Last Decade

Naoki Umezawa

71 papers receiving 3.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Active Oxygen Species Generated from Photoexcited Fullerene (C₆₀) as Potential Medicines: O₂^-^•versus¹O₂

2003 584 citations Naoki Umezawa, Tetsuo Nagano et al. Journal of the American Chemical Society profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Naoki Umezawa Japan	25	1.4k	1.0k	971	429	254	74	3.0k
Ulrich Schatzschneider Germany	35	2.2k 1.5×	1.5k 1.4×	1.0k 1.1×	475 1.1×	156 0.6×	97	4.4k
Eoin M. Scanlan Ireland	27	1.2k 0.9×	1.5k 1.5×	472 0.5×	382 0.9×	263 1.0×	92	2.8k
Dorota Gryko Poland	39	1.3k 0.9×	3.0k 2.9×	1.4k 1.5×	331 0.8×	301 1.2×	156	5.1k
Shang Jia United States	21	1.3k 0.9×	1.1k 1.1×	450 0.5×	249 0.6×	239 0.9×	39	2.4k
Chunyan Tan China	37	2.0k 1.4×	1.2k 1.2×	1.5k 1.5×	523 1.2×	758 3.0×	138	4.5k
M. Sameiro T. Gonçalves Portugal	24	934 0.6×	1.1k 1.0×	1.2k 1.2×	325 0.8×	375 1.5×	120	2.7k
Noureddine Khiar Spain	31	956 0.7×	2.7k 2.6×	616 0.6×	350 0.8×	259 1.0×	106	3.6k
S. M. Yarmoluk Ukraine	29	1.6k 1.1×	834 0.8×	623 0.6×	252 0.6×	327 1.3×	189	2.8k
Marcel Tabak Brazil	28	1.4k 0.9×	627 0.6×	744 0.8×	181 0.4×	346 1.4×	116	2.7k
Yu‐Shun Yang China	29	849 0.6×	839 0.8×	691 0.7×	570 1.3×	749 2.9×	121	2.8k

Countries citing papers authored by Naoki Umezawa

Since Specialization

Citations

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

Fields of papers citing papers by Naoki Umezawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Naoki Umezawa

This figure shows the co-authorship network connecting the top 25 collaborators of Naoki Umezawa. A scholar is included among the top collaborators of Naoki Umezawa 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 Naoki Umezawa. Naoki Umezawa 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

Umezawa, Naoki, et al.. (2025). Polyethylene glycol incorporation to reduce the cytotoxicity associated with cationic cell-penetrating-peptide conjugation. RSC Medicinal Chemistry. 16(10). 5025–5031. 1 indexed citations

Hisamatsu, Yosuke, Tsunehiko Higuchi, & Naoki Umezawa. (2025). Highly stable host-guest complexation of 4-aminoquinoline-based tweezer-type host molecule with chlorin e6. Journal of Inclusion Phenomena and Macrocyclic Chemistry. 105(7-8). 421–431.

Hisamatsu, Yosuke, et al.. (2024). Temperature Control of the Self‐Assembly Process of 4‐Aminoquinoline Amphiphile: Selective Construction of Perforated Vesicles and Nanofibers, and Structural Restoration Capability. Chemistry - A European Journal. 30(36). e202400134–e202400134. 1 indexed citations

Umezawa, Naoki & Saeko Oshiba. (2022). SIC-MIMO Systems with Neural Networks in OFDM-Based WDM VLCs. 2022 Asia-Pacific Microwave Conference (APMC). 490–492. 1 indexed citations

Kobayashi, Yuko, Nobuki Kato, Naoki Umezawa, et al.. (2019). Methylene chain ruler for evaluating the regioselectivity of a substrate-recognising oxidation catalyst. Chemical Communications. 55(58). 8378–8381. 4 indexed citations

Nishio, Takashi, Yuko Yoshikawa, Wakao Fukuda, et al.. (2018). Branched‐Chain Polyamine Found in Hyperthermophiles Induces Unique Temperature‐Dependent Structural Changes in Genome‐Size DNA. ChemPhysChem. 19(18). 2299–2304. 21 indexed citations

Rahman, M. M., et al.. (2018). Biogenic triamine and tetraamine activate core catalytic ability of Tetrahymena group I ribozyme in the absence of its large activator module. Biochemical and Biophysical Research Communications. 496(2). 594–600. 5 indexed citations

Umezawa, Naoki, Shin Sato, Masaki Kikuchi, et al.. (2018). Inhibition of FAD-dependent lysine-specific demethylases by chiral polyamine analogues. RSC Advances. 8(64). 36895–36902. 3 indexed citations

Hidese, Ryota, Eiichi Mizohata, Junso Fujita, et al.. (2017). Active site geometry of a novel aminopropyltransferase for biosynthesis of hyperthermophile‐specific branched‐chain polyamine. FEBS Journal. 284(21). 3684–3701. 11 indexed citations

10.

Umezawa, Naoki, et al.. (2016). Activation of lysine-specific demethylase 1 inhibitor peptide by redox-controlled cleavage of a traceless linker. Bioorganic & Medicinal Chemistry. 25(3). 1227–1234. 17 indexed citations

11.

Kato, Nobuki, et al.. (2015). Efficient oxidation of ethers with pyridine N-oxide catalyzed by ruthenium porphyrins. Journal of Porphyrins and Phthalocyanines. 19(01-03). 411–416. 13 indexed citations

12.

Umezawa, Naoki, Yuki Imamura, Nobuki Kato, et al.. (2015). Structurally Diverse Polyamines: Solid‐Phase Synthesis and Interaction with DNA. ChemBioChem. 16(12). 1811–1819. 9 indexed citations

13.

Umezawa, Naoki, et al.. (2008). Array-based fluorescence assay for serine/threonine kinases using specific chemical reaction. Bioorganic & Medicinal Chemistry. 16(16). 7788–7794. 16 indexed citations

14.

Aoki, Yuko, Naoki Umezawa, Y. Asano, et al.. (2007). A versatile strategy for the synthesis of crown ether-bearing heterocycles: Discovery of calcium-selective fluoroionophore. Bioorganic & Medicinal Chemistry. 15(22). 7108–7115. 13 indexed citations

15.

Sadowsky, Jack, Margaret A. Schmitt, Hee‐Seung Lee, et al.. (2005). Chimeric (α/β + α)-Peptide Ligands for the BH3-Recognition Cleft of Bcl-x _L : Critical Role of the Molecular Scaffold in Protein Surface Recognition. Journal of the American Chemical Society. 127(34). 11966–11968. 150 indexed citations

16.

Umezawa, Naoki, et al.. (2005). Evaluation of 3-substituted arginine analogs as selective inhibitors of human nitric oxide synthase isozymes. Bioorganic & Medicinal Chemistry Letters. 15(11). 2881–2885. 15 indexed citations

17.

Umezawa, Naoki, et al.. (2005). On-Bead Fluorescence Assay for Serine/Threonine Kinases. Organic Letters. 7(25). 5565–5568. 25 indexed citations

18.

Hattori, Shigeki, Taku Hasobe, Kei Ohkubo, et al.. (2004). Enhanced Energy and Quantum Efficiencies of a Nanocrystalline Photoelectrochemical Cell Sensitized with a Donor−Acceptor Dyad Derived from Fluorescein. The Journal of Physical Chemistry B. 108(39). 15200–15205. 35 indexed citations

19.

Gelman, Michael A., Sara N. Richter, Hong Cao, et al.. (2003). Selective Binding of TAR RNA by a Tat-Derived β-Peptide. Organic Letters. 5(20). 3563–3565. 56 indexed citations

20.

LePlae, Paul R., Naoki Umezawa, Hee‐Seung Lee, & Samuel H. Gellman. (2001). An Efficient Route to Either Enantiomer oftrans-2-Aminocyclopentanecarboxylic Acid. The Journal of Organic Chemistry. 66(16). 5629–5632. 68 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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