Klaüs Praefcke

4.2k total citations
205 papers, 3.1k citations indexed

About

Klaüs Praefcke is a scholar working on Organic Chemistry, Electronic, Optical and Magnetic Materials and Spectroscopy. According to data from OpenAlex, Klaüs Praefcke has authored 205 papers receiving a total of 3.1k indexed citations (citations by other indexed papers that have themselves been cited), including 155 papers in Organic Chemistry, 80 papers in Electronic, Optical and Magnetic Materials and 51 papers in Spectroscopy. Recurrent topics in Klaüs Praefcke's work include Liquid Crystal Research Advancements (75 papers), Molecular spectroscopy and chirality (36 papers) and Organic Chemistry Cycloaddition Reactions (34 papers). Klaüs Praefcke is often cited by papers focused on Liquid Crystal Research Advancements (75 papers), Molecular spectroscopy and chirality (36 papers) and Organic Chemistry Cycloaddition Reactions (34 papers). Klaüs Praefcke collaborates with scholars based in Germany, Israel and Russia. Klaüs Praefcke's co-authors include Bernd Kohne, D. Singer, Jürgen Martens, Bilgi Gündoḡan, Dirk Blunk, Joachim H. Wendorff, N. V. Usol’tseva, Helmut Simon, Martina Ebert and Alexander Schönberg and has published in prestigious journals such as Advanced Materials, Journal of Materials Chemistry and Chemical Physics Letters.

In The Last Decade

Klaüs Praefcke

195 papers receiving 2.8k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Klaüs Praefcke Germany 30 2.1k 1.6k 899 696 286 205 3.1k
Shigeo Kohmoto Japan 30 2.3k 1.1× 686 0.4× 876 1.0× 596 0.9× 596 2.1× 188 3.6k
Yoshio Matsunaga Japan 21 880 0.4× 1.1k 0.6× 752 0.8× 400 0.6× 149 0.5× 143 2.2k
Rui Tamura Japan 32 1.7k 0.8× 689 0.4× 1.2k 1.3× 815 1.2× 354 1.2× 179 3.3k
Robert P. Lemieux Canada 28 1.1k 0.5× 1.5k 0.9× 1.0k 1.1× 921 1.3× 231 0.8× 111 2.4k
Peer Kirsch Germany 31 3.7k 1.7× 837 0.5× 592 0.7× 436 0.6× 543 1.9× 85 5.7k
Angelika Baro Germany 28 3.6k 1.7× 1.8k 1.1× 1.5k 1.7× 403 0.6× 556 1.9× 124 5.1k
Sergey Sergeyev Belgium 27 1.6k 0.7× 1.1k 0.7× 1.1k 1.2× 557 0.8× 342 1.2× 68 3.1k
Andrew N. Cammidge United Kingdom 33 1.9k 0.9× 1.3k 0.8× 1.5k 1.7× 478 0.7× 288 1.0× 129 3.3k
Matthias Bremer Germany 31 1.6k 0.7× 1.2k 0.7× 552 0.6× 395 0.6× 208 0.7× 89 2.8k
Carlo Alberto Veracini Italy 24 535 0.3× 786 0.5× 462 0.5× 806 1.2× 140 0.5× 110 1.7k

Countries citing papers authored by Klaüs Praefcke

Since Specialization
Citations

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

Fields of papers citing papers by Klaüs Praefcke

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Klaüs Praefcke

This figure shows the co-authorship network connecting the top 25 collaborators of Klaüs Praefcke. A scholar is included among the top collaborators of Klaüs Praefcke 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 Klaüs Praefcke. Klaüs Praefcke 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.
Praefcke, Klaüs, et al.. (1999). A novel platinum methylene complex. Journal of Organometallic Chemistry. 592(2). 155–161. 15 indexed citations
2.
Praefcke, Klaüs, et al.. (1997). Preliminary communication First observation of an optically controlled electro-optic effect in nematic-discotic liquid crystals. Liquid Crystals. 23(3). 439–442. 8 indexed citations
3.
Usol’tseva, N. V., Klaüs Praefcke, D. Singer, & Bilgi Gündoḡan. (1994). The first case of a lyotropic twisted nematic (N∗) phase induced by a chiral charge transfer complex [1]. Liquid Crystals. 16(4). 617–623. 29 indexed citations
4.
Gündoḡan, Bilgi & Klaüs Praefcke. (1993). Flüssigkristalline Verbindungen, 77. Neue makroheterocyclische Palladium‐Komplexe. Chemische Berichte. 126(5). 1253–1255. 20 indexed citations
5.
Praefcke, Klaüs, Bernd Kohne, Siegmar Diele, G. Pelzl, & Anders Kjær. (1992). Mesophase characterization of some long chain vicinal multihydroxy amphiphiles [1,2]. Liquid Crystals. 11(1). 1–8. 23 indexed citations
6.
7.
Praefcke, Klaüs, et al.. (1991). Attempts Towards Novel Cycloalkane Liquid Crystals. Journal of Carbohydrate Chemistry. 10(4). 523–537. 15 indexed citations
8.
Praefcke, Klaüs, et al.. (1991). Liquid-Crystalline Inositol Ethers, their Syntheses and Columnar Mesophases. Journal of Carbohydrate Chemistry. 10(4). 539–548. 22 indexed citations
9.
Praefcke, Klaüs, et al.. (1991). Deuterium NMR studies of inositol liquid crystals [1]. Liquid Crystals. 9(5). 711–726. 7 indexed citations
10.
Praefcke, Klaüs, et al.. (1991). Charge transfer induced nematic columnar phase in low molecular weight disc-like systems [1]. Liquid Crystals. 10(2). 147–159. 90 indexed citations
11.
Praefcke, Klaüs, Bernd Kohne, Bilgi Gündoḡan, et al.. (1990). 2,3,4-Trihexyloxy Cinnamic Acid—The First Example of a Novel Series of Biaxial Nematic Liquid Crystals. 7(1). 27–32.
12.
Praefcke, Klaüs, et al.. (1989). First carbohydrate liquid crystals of columnar structure. Liquid Crystals. 6(3). 263–270. 64 indexed citations
13.
Praefcke, Klaüs & Stephan Werner. (1987). Kaliumsuperoxid und ein neuer Weg von myo‐ zu scyllo‐Inositderivaten. Liebigs Annalen der Chemie. 1987(7). 645–646. 5 indexed citations
14.
15.
Praefcke, Klaüs, et al.. (1981). Organische tellurverbindungen. Journal of Organometallic Chemistry. 208(1). 43–46. 3 indexed citations
16.
Praefcke, Klaüs, et al.. (1980). 3H‐Selenolo[2,3‐d]‐1,2‐thiol‐3‐on und 8H‐Diselenolo‐[3,2‐b:2′,3′‐e]thiopyran‐8‐on, zwei neue Ringsysteme. Liebigs Annalen der Chemie. 1980(10). 1620–1622. 2 indexed citations
17.
18.
Praefcke, Klaüs, et al.. (1977). CIDNP Studies of Hydrogen Abstraction by Aroyl Radicals in Norrish Type I Processes. Zeitschrift für Naturforschung B. 32(6). 674–677. 7 indexed citations
19.
Martens, Jürgen, et al.. (1974). 2- und 4-Azathioxanthone durch Photoumlagerung von Thionicotinsäure-S-arylestern. Angewandte Chemie. 86(15). 562–563. 11 indexed citations
20.
Martens, Jürgen, Klaüs Praefcke, & Helmut Schwarz. (1973). Organische Schwefelverbindungen V. Tetrahedron Letters. 14(38). 3707–3710. 1 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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