Alfred Karpfen

5.7k total citations
144 papers, 4.9k citations indexed

About

Alfred Karpfen is a scholar working on Atomic and Molecular Physics, and Optics, Spectroscopy and Physical and Theoretical Chemistry. According to data from OpenAlex, Alfred Karpfen has authored 144 papers receiving a total of 4.9k indexed citations (citations by other indexed papers that have themselves been cited), including 85 papers in Atomic and Molecular Physics, and Optics, 64 papers in Spectroscopy and 51 papers in Physical and Theoretical Chemistry. Recurrent topics in Alfred Karpfen's work include Advanced Chemical Physics Studies (77 papers), Molecular Spectroscopy and Structure (53 papers) and Crystallography and molecular interactions (34 papers). Alfred Karpfen is often cited by papers focused on Advanced Chemical Physics Studies (77 papers), Molecular Spectroscopy and Structure (53 papers) and Crystallography and molecular interactions (34 papers). Alfred Karpfen collaborates with scholars based in Austria, Germany and Canada. Alfred Karpfen's co-authors include Hans Lischka, Miklós Kertész, Manfred Kofranek, Eugene S. Kryachko, Cheol Ho Choi, Peter Wolschann, Peter Schuster, P. R. Bunker, W. Mikenda and Per Jensen and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Chemical Physics and Physical review. B, Condensed matter.

In The Last Decade

Alfred Karpfen

144 papers receiving 4.7k citations

Peers

Countries citing papers authored by Alfred Karpfen

Since Specialization

Citations

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

Fields of papers citing papers by Alfred Karpfen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Alfred Karpfen

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

#	Work	Indexed citations
1	How strong is the edge effect in the adsorption of anticancer drugs on a graphene cluster? 2016 ·Journal of Molecular Modeling ·Chompoonut Rungnim, Rungroj Chanajaree, Thanyada Rungrotmongkol, Supot Hannongbua, Nawee Kungwan, Peter Wolschann, Alfred Karpfen, Vudhichai Parasuk	18
2	Binding mode and free energy prediction of fisetin/β-cyclodextrin inclusion complexes 2014 ·Beilstein Journal of Organic Chemistry ·Bodee Nutho, Wasinee Khuntawee, Chompoonut Rungnim, Piamsook Pongsawasdi, Peter Wolschann, Alfred Karpfen, Nawee Kungwan, Thanyada Rungrotmongkol	52
3	Synthesis and Conformation of Chiral Biheteroaryls 2011 ·The Journal of Organic Chemistry ·Wanchai Pluempanupat, Michaël Abraham, Lothar Brecker, Peter Wolschann, Alfred Karpfen, Vladimir B. Arion, Michael Widhalm	8
4	Diazene, a Potential New Hydrogen Bond Donor and Acceptor with Blue-Shifted N―H Stretching Modes: A Theoretical Study 2009 ·Polish Journal of Chemistry ·Alfred Karpfen, (unknown), Peter Wolschann	2
5	Cryospectroscopic and ab initio studies of haloform–trimethylamine H-bonded complexes 2009 ·Physical Chemistry Chemical Physics ·K.S. Rutkowski, Alfred Karpfen, С.М. Меликова, Wouter Herrebout, (unknown), Peter Wolschann, Benjamin J. van der Veken	26
6	Blue and Red Frequency Shift Effects Related with XA–H...B-Y Complex Formation 2009 ·Polish Journal of Chemistry ·K.S. Rutkowski, Alfred Karpfen, С.М. Меликова, Paweł Rodziewicz	1
7	Structural and energetic consequences of the formation of intramolecular hydrogen bonds 2006 ·Journal of Molecular Structure ·A. Koll, Alfred Karpfen, Peter Wolschann	19
8	Theoretical force-field model for blue-shifted hydrogen bonds with fluoromethanes 2006 ·Chemical Physics ·Eugene S. Kryachko, Alfred Karpfen	29
9	Surprisingly regular structure–property relationships between C–O bond distances and methoxy group torsional potentials: An ab initio and density functional study 2003 ·Journal of Molecular Structure THEOCHEM ·(unknown), Alfred Karpfen, Peter Wolschann	12
10	NMR Shieldings in Benzoyl and 2-Hydroxybenzoyl Compounds. Experimental versus GIAO Calculated Data 1997 ·The Journal of Physical Chemistry A ·(unknown), W. Mikenda, Alfred Karpfen, Hanspeter Kählig	45
11	An ab initio close-coupling calculation of the lower vibrational energies of the HCl dimer 1991 ·Chemical Physics Letters ·Per Jensen, Mark D. Marshall, P. R. Bunker, Alfred Karpfen	19
12	Ab initio studies on hydrogen-bonded trimers: structure and vibrational spectra of HCN(HF)2 and (HCN)2HF 1991 ·Journal of Molecular Structure THEOCHEM ·Alfred Karpfen, (unknown), Hans Lischka	3
13	An ab initio calculation of the nonadiabatic effect on the tunneling splitting in vibrationally excited (HF)2 1991 ·Journal of Molecular Spectroscopy ·Per Jensen, P. R. Bunker, Alfred Karpfen	7
14	Ab initio calculations on the excited states of π-systems. II. Valence excitations in diacetylene 1986 ·Chemical Physics ·Alfred Karpfen, Hans Lischka	19
15	Abinitio studies on hydrogen bonded chains. V. The structure of infinite chains of methanol and water molecules 1985 ·Canadian Journal of Chemistry ·Alfred Karpfen, Peter Schuster	28
16	Ab initio studies on clusters of polar molecules. stability of cyclic versus open-chain trimers of hydrogen fluoride 1983 ·Chemical Physics Letters ·Alfred Karpfen, Anton Beyer, Peter Schuster	35
17	Ab initio Studies on polymers 1979 ·Theoretical Chemistry Accounts ·Alfred Karpfen, (unknown)	89
18	Ab initio studies on all-trans-polyene 1979 ·Solid State Communications ·Alfred Karpfen, (unknown)	65
19	Near Hartree-Fock limit study of the linear chain of hydrogen atoms 1979 ·Chemical Physics Letters ·Alfred Karpfen	27
20	Hydrogen bonding in long chains of hydrogen fluoride and long chains and large clusters of water molecules 1974 ·Theoretical Chemistry Accounts ·Alfred Karpfen, J. Ladik, P. Russegger, Peter Schuster, S�ndor Suhai	32

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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