Sam‐Rok Keum

915 total citations
57 papers, 790 citations indexed

About

Sam‐Rok Keum is a scholar working on Materials Chemistry, Organic Chemistry and Cellular and Molecular Neuroscience. According to data from OpenAlex, Sam‐Rok Keum has authored 57 papers receiving a total of 790 indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Materials Chemistry, 28 papers in Organic Chemistry and 13 papers in Cellular and Molecular Neuroscience. Recurrent topics in Sam‐Rok Keum's work include Photochromic and Fluorescence Chemistry (38 papers), Photoreceptor and optogenetics research (13 papers) and Synthesis of Indole Derivatives (12 papers). Sam‐Rok Keum is often cited by papers focused on Photochromic and Fluorescence Chemistry (38 papers), Photoreceptor and optogenetics research (13 papers) and Synthesis of Indole Derivatives (12 papers). Sam‐Rok Keum collaborates with scholars based in South Korea, Canada and Türkiye. Sam‐Rok Keum's co-authors include Erwin Buncel, Peter M. Kazmaier, Sung-Hoon Kim, Kwangnak Koh, Ki Bong Lee, Jaejung Ko, Sang Ook Kang, Richard A. Manderville, Myung-Jin Lee and Myung-Jin Lee and has published in prestigious journals such as Tetrahedron, Sensors and Tetrahedron Letters.

In The Last Decade

Sam‐Rok Keum

56 papers receiving 720 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Sam‐Rok Keum South Korea 17 572 325 292 126 92 57 790
V. А. Barachevsky Russia 17 928 1.6× 437 1.3× 527 1.8× 83 0.7× 99 1.1× 147 1.2k
Vladimir Lokshin France 18 843 1.5× 373 1.1× 563 1.9× 156 1.2× 172 1.9× 78 1.2k
Janet Cusido United States 17 760 1.3× 203 0.6× 339 1.2× 107 0.8× 67 0.7× 21 1.0k
Н. А. Волошин Russia 15 752 1.3× 465 1.4× 297 1.0× 161 1.3× 121 1.3× 75 832
Manuel Natali Ireland 7 652 1.1× 361 1.1× 225 0.8× 220 1.7× 40 0.4× 7 743
Kazuyoshi Shigematsu Japan 11 443 0.8× 126 0.4× 321 1.1× 184 1.5× 81 0.9× 14 720
Nadezhda I. Makarova Russia 17 497 0.9× 176 0.5× 503 1.7× 143 1.1× 95 1.0× 111 947
Qianfu Luo China 15 743 1.3× 252 0.8× 363 1.2× 137 1.1× 32 0.3× 42 885
A. Samat France 19 648 1.1× 276 0.8× 405 1.4× 94 0.7× 155 1.7× 68 838
Naoki Tanifuji Japan 15 779 1.4× 286 0.9× 422 1.4× 84 0.7× 68 0.7× 32 1.1k

Countries citing papers authored by Sam‐Rok Keum

Since Specialization
Citations

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

Fields of papers citing papers by Sam‐Rok Keum

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sam‐Rok Keum. 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 Sam‐Rok Keum. The network helps show where Sam‐Rok Keum may publish in the future.

Co-authorship network of co-authors of Sam‐Rok Keum

This figure shows the co-authorship network connecting the top 25 collaborators of Sam‐Rok Keum. A scholar is included among the top collaborators of Sam‐Rok Keum 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 Sam‐Rok Keum. Sam‐Rok Keum 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.
2.
Keum, Sam‐Rok, et al.. (2012). Facile Evaluation of Thermodynamic Parameters for Reverse Thermochromism of Indolinobenzospiropyran-6-carboxylates in Aqueous Binary Solvents. Bulletin of the Korean Chemical Society. 33(8). 2683–2688. 6 indexed citations
3.
Kim, Do Kyung, et al.. (2012). Unusual Stability of Diastereomers of the Isomeric Pyridine-based Leuco-TAM Dyes 2,2'-(2-(Pyridin-4 or 3-yl)propane-1,3-diylidene)bis(5-chloro-1,3,3-trimethylindoline). Bulletin of the Korean Chemical Society. 33(2). 681–684. 2 indexed citations
4.
5.
Buncel, Erwin, Sam‐Rok Keum, Srinivasan Rajagopal, & Robin A. Cox. (2009). Rearrangement mechanisms for azoxypyridines and azoxypyridine N -oxides in the 100% H 2 SO 4 region — The Wallach rearrangement story comes full circle. Canadian Journal of Chemistry. 87(8). 1127–1134. 3 indexed citations
6.
7.
Keum, Sam‐Rok, et al.. (2005). Complete 1H and 13C NMR spectral assignment of symmetric and asymmetric bis‐spiropyran derivatives. Magnetic Resonance in Chemistry. 43(10). 873–876. 5 indexed citations
8.
Choi, Hyunbong, et al.. (2005). Selective photoswitching of a dyad with diarylethene and spiropyran units. Tetrahedron. 61(15). 3719–3723. 26 indexed citations
9.
Keum, Sam‐Rok, et al.. (2005). Dicondensed indolinobenzospiropyrans as precursors of thermo‐ and photochromic spiropyrans. Part II: assignment of 1H and 13C NMR spectra. Magnetic Resonance in Chemistry. 44(1). 90–94. 6 indexed citations
10.
Keum, Sam‐Rok, et al.. (2005). Anchoring of photochromic spiroxazine into silica xerogels. Dyes and Pigments. 72(3). 363–366. 6 indexed citations
11.
Keum, Sam‐Rok, et al.. (2004). Synthesis and mesomorphic properties of new liquid crystalline compounds VIII. Indolinobenzospiropyranyl aryliminobenzoates. Liquid Crystals. 31(12). 1569–1572. 5 indexed citations
12.
Kim, Sung-Hoon, et al.. (2004). Synthesis and properties of spiroxazine polymer derived from cyclopolymerization of diallyldimethylammonium chloride and diallylamine. Dyes and Pigments. 66(2). 155–160. 13 indexed citations
13.
Keum, Sam‐Rok, et al.. (2003). Synthesis and characterization of new liquid crystallines containing a mono-aza styrylated indolinobenzospiropyran. Part 6. Dyes and Pigments. 60(1). 55–59. 8 indexed citations
14.
Keum, Sam‐Rok, et al.. (2001). Synthesis and properties of thermo- and photochromic bisindolinobenzospiropyrans linked by thio- and carbonyl groups. Dyes and Pigments. 50(3). 171–176. 15 indexed citations
15.
16.
Keum, Sam‐Rok, et al.. (1999). Symmetric and unsymmetric indolinobenzospiropyran dimers: synthesis and characterization. Dyes and Pigments. 41(1-2). 41–47. 24 indexed citations
17.
Cheon, Kap‐Soo, Robin A. Cox, Sam‐Rok Keum, & Erwin Buncel. (1998). Acid-catalysed aryl hydroxylation of phenylazopyridines: reaction intermediates, kinetics and mechanism 1. Journal of the Chemical Society Perkin Transactions 2. 1231–1240. 14 indexed citations
18.
Keum, Sam‐Rok, et al.. (1993). Unusual Solvatochromic Behavior of the Open-Chain Merocyanine Forms of 5-chlorinated 1,3,3-spiro(2H-1-benzo-2,$2^{\prime}$-indoline) Derivatives. Bulletin of the Korean Chemical Society. 14(1). 16–18. 2 indexed citations
19.
Keum, Sam‐Rok, Ki Bong Lee, & Thomas C. Bruice. (1990). Dioxygen Transfer from 4a-Hydroperoxyflavin Anion to Isomeric Aminophenolates. Bulletin of the Korean Chemical Society. 11(2). 95–99. 2 indexed citations
20.
Kabilan, S., Erwin Buncel, & Sam‐Rok Keum. (1983). The First Isolation of Isomeric a- and b-Phenylazoxypyridine-N-oxides. Heterocycles. 20(9). 1751–1751. 6 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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