Hans van Willigen

3.0k total citations
109 papers, 2.5k citations indexed

About

Hans van Willigen is a scholar working on Physical and Theoretical Chemistry, Materials Chemistry and Organic Chemistry. According to data from OpenAlex, Hans van Willigen has authored 109 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 62 papers in Physical and Theoretical Chemistry, 55 papers in Materials Chemistry and 30 papers in Organic Chemistry. Recurrent topics in Hans van Willigen's work include Photochemistry and Electron Transfer Studies (56 papers), Porphyrin and Phthalocyanine Chemistry (32 papers) and Electron Spin Resonance Studies (23 papers). Hans van Willigen is often cited by papers focused on Photochemistry and Electron Transfer Studies (56 papers), Porphyrin and Phthalocyanine Chemistry (32 papers) and Electron Spin Resonance Studies (23 papers). Hans van Willigen collaborates with scholars based in United States, Netherlands and Germany. Hans van Willigen's co-authors include Patricia R. Levstein, Burkhard Kirste, Tavarekere K. Chandrashekar, Robert G. Griffin, E. de Boer, R. A. Haberkorn, Mohammad S. Farahat, Guilford Jones, Carlos A. Steren and Ruth E. Stark and has published in prestigious journals such as Chemical Reviews, Journal of the American Chemical Society and The Journal of Chemical Physics.

In The Last Decade

Hans van Willigen

107 papers receiving 2.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hans van Willigen United States 28 1.2k 952 829 451 421 109 2.5k
H. Kurreck Germany 25 1.4k 1.2× 972 1.0× 931 1.1× 287 0.6× 377 0.9× 132 2.5k
Carlo Corvaja Italy 25 1.2k 1.0× 771 0.8× 984 1.2× 268 0.6× 645 1.5× 154 2.7k
Fabian Gerson Switzerland 29 766 0.7× 1.2k 1.2× 2.1k 2.5× 406 0.9× 289 0.7× 226 3.3k
Miquel Moreno Spain 34 905 0.8× 1.3k 1.4× 1.2k 1.4× 411 0.9× 252 0.6× 136 3.1k
Kimio Akiyama Japan 25 829 0.7× 985 1.0× 949 1.1× 115 0.3× 251 0.6× 124 2.2k
E. A. C. Lücken Switzerland 22 832 0.7× 369 0.4× 964 1.2× 789 1.7× 337 0.8× 148 2.3k
Anthony Harriman United Kingdom 32 2.3k 2.0× 924 1.0× 819 1.0× 412 0.9× 109 0.3× 112 3.8k
Günter Grampp Austria 29 787 0.7× 1.2k 1.3× 737 0.9× 143 0.3× 403 1.0× 155 2.5k
Seigo Yamauchi Japan 36 2.3k 1.9× 1.8k 1.9× 952 1.1× 370 0.8× 818 1.9× 176 4.5k
Rui Tamura Japan 32 1.2k 1.0× 622 0.7× 1.7k 2.0× 815 1.8× 341 0.8× 179 3.3k

Countries citing papers authored by Hans van Willigen

Since Specialization
Citations

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

Fields of papers citing papers by Hans van Willigen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hans van Willigen. 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 Hans van Willigen. The network helps show where Hans van Willigen may publish in the future.

Co-authorship network of co-authors of Hans van Willigen

This figure shows the co-authorship network connecting the top 25 collaborators of Hans van Willigen. A scholar is included among the top collaborators of Hans van Willigen 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 Hans van Willigen. Hans van Willigen 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.
Hamann, Thomas W., et al.. (2005). Time-Resolved EPR Study of the Photophysics and Photochemistry of 1-(3-(Methoxycarbonyl)propyl)-1-phenyl[6.6]C61. The Journal of Physical Chemistry A. 109(51). 11665–11672.
2.
Willigen, Hans van, et al.. (2001). Observation of radical pair zero quantum coherence effects in the FT-EPR spectra of SO3− and eaq− generated by photoionization of sulfite ions. Chemical Physics Letters. 344(1-2). 49–54. 2 indexed citations
3.
Willigen, Hans van, et al.. (2001). Photoionization of Phenolates and Scavenging of Hydrated Electrons by No3-:  A Study of the Reaction Mechanism by FT-EPR. The Journal of Physical Chemistry A. 105(19). 4669–4675. 17 indexed citations
4.
Martino, Débora M. & Hans van Willigen. (2000). Energy- and Electron-Transfer Quenching of Porphyrin Triplets by C60. The Journal of Physical Chemistry A. 104(46). 10701–10707. 10 indexed citations
5.
Kleverlaan, Cornelis J., Débora M. Martino, Hans van Willigen, Derk J. Stufkens, & A. Oskam. (1996). FT-EPR Study of the Photochemical Homolysis of Re− and Ru−Alkyl Bonds in Re(R)(CO)3(α-Diimine) and Ru(I)(R)(CO)2(α-Diimine) Complexes. Evidence for the Reactive σ(M−R)π* State. The Journal of Physical Chemistry. 100(48). 18607–18611. 27 indexed citations
6.
Ohara, Keishi, Noboru Hirota, Carlos A. Steren, & Hans van Willigen. (1996). CW and FT Time-Resolved EPR Investigation of the Quenching Reaction of the 2-Hydroxypropan-2-yl Radical. The Journal of Physical Chemistry. 100(8). 3070–3074. 6 indexed citations
7.
Steren, Carlos A., et al.. (1994). Spin Dynamics of C60 Triplets. The Journal of Physical Chemistry. 98(31). 7464–7469. 32 indexed citations
8.
Willigen, Hans van & Burkhard Kirste. (1989). ENDOR Study of Biradicals Randomly Oriented in a Rigid Matrix. Israel Journal of Chemistry. 29(1). 93–98. 2 indexed citations
9.
Lendzian, Friedhelm, Hans van Willigen, Srikanth Sastry, et al.. (1985). Proton endor study of the photoexcited triplet state PT in Rps. sphaeroides R-26 photosynthetic reaction centres. Chemical Physics Letters. 118(2). 145–150. 20 indexed citations
10.
Willigen, Hans van, et al.. (1985). Triplet ESR study of dimerization of cationic and anionic water-soluble porphyrins. Journal of the American Chemical Society. 107(25). 7784–7785. 37 indexed citations
11.
Chandrashekar, Tavarekere K. & Hans van Willigen. (1984). ESR study of photoexcited triplets of some tetra(4-sulfonatophenyl)porphyrin dimers. Chemical Physics Letters. 106(3). 237–241. 13 indexed citations
12.
Chandrashekar, Tavarekere K., et al.. (1984). Optical and electron spin resonance study of cation and cation-crown ether induced dimerization of tetrakis(4-sulfonatophenyl)porphyrin. The Journal of Physical Chemistry. 88(19). 4326–4332. 67 indexed citations
13.
Kirste, Burkhard & Hans van Willigen. (1982). Endor on photoexcited triplets randomly oriented in solid solution. Chemical Physics Letters. 92(4). 339–342. 14 indexed citations
14.
Griffin, Robert G., Geoffrey Bodenhausen, R. A. Haberkorn, et al.. (1981). High-resolution dipolar n.m.r. spectra in solids. Philosophical Transactions of the Royal Society of London Series A Mathematical and Physical Sciences. 299(1452). 547–563. 11 indexed citations
15.
Willigen, Hans van, et al.. (1981). ENDOR study of oxovanadium(IV) tetraphenylporphyrin randomly oriented in rigid solution. The Journal of Physical Chemistry. 85(9). 1220–1224. 30 indexed citations
16.
Willigen, Hans van. (1979). Proton endor on VO(acac)2 in frozen solution. Chemical Physics Letters. 65(3). 490–493. 9 indexed citations
17.
Naqvi, K. Razi, et al.. (1978). On the mechanism of excimer formation in triplet—triplet annihilation. Chemical Physics Letters. 57(2). 197–201. 7 indexed citations
18.
Willigen, Hans van, M. Plato, R. Biehl, Klaus‐Peter Dinse, & K. Möbius. (1973). Rubidium and proton ENDOR on ion pairs in solution. Molecular Physics. 26(4). 793–809. 20 indexed citations
19.
Willigen, Hans van. (1972). Electron spin resonance study of counterion effects on the rate constant of disproportionation of the cyclooctatetraene anion. Journal of the American Chemical Society. 94(23). 7966–7970. 9 indexed citations
20.
Möbius, K., Hans van Willigen, & August H. Maki. (1971). ENDOR study of pentaphenylcyclopentadienyl radicals in solution. Lifting of orbital degeneracy by methyl substitution. Molecular Physics. 20(2). 289–304. 27 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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