David Leppard

555 total citations
24 papers, 431 citations indexed

About

David Leppard is a scholar working on Organic Chemistry, Materials Chemistry and Physical and Theoretical Chemistry. According to data from OpenAlex, David Leppard has authored 24 papers receiving a total of 431 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Organic Chemistry, 7 papers in Materials Chemistry and 6 papers in Physical and Theoretical Chemistry. Recurrent topics in David Leppard's work include Photochemistry and Electron Transfer Studies (6 papers), Radical Photochemical Reactions (3 papers) and Luminescence and Fluorescent Materials (3 papers). David Leppard is often cited by papers focused on Photochemistry and Electron Transfer Studies (6 papers), Radical Photochemical Reactions (3 papers) and Luminescence and Fluorescent Materials (3 papers). David Leppard collaborates with scholars based in Switzerland, Germany and United Kingdom. David Leppard's co-authors include Horst Krämer, Kurt Dietliker, Urszula Kolczak, G. RIST, Martin Stein, G. R. Knox, Peter L. Pauson, W. E. Watts, Aǹdré S. Dreiding and Gerhard Rytz and has published in prestigious journals such as The Journal of Physical Chemistry A, Tetrahedron Letters and Journal of Organometallic Chemistry.

In The Last Decade

David Leppard

23 papers receiving 409 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
David Leppard Switzerland 12 275 122 104 45 44 24 431
W.A. Herrmann Germany 9 286 1.0× 164 1.3× 55 0.5× 75 1.7× 88 2.0× 32 422
Gether Irick United States 10 151 0.5× 177 1.5× 99 1.0× 25 0.6× 30 0.7× 20 376
P. CALUWE United States 11 198 0.7× 44 0.4× 56 0.5× 42 0.9× 33 0.8× 23 370
Giampietro Cum Italy 12 191 0.7× 138 1.1× 29 0.3× 47 1.0× 41 0.9× 37 373
Gerhard Rytz Switzerland 10 142 0.5× 189 1.5× 147 1.4× 24 0.5× 47 1.1× 14 359
M. Steven Paley United States 7 163 0.6× 101 0.8× 74 0.7× 17 0.4× 54 1.2× 9 446
B. Kanner Poland 9 284 1.0× 119 1.0× 30 0.3× 67 1.5× 39 0.9× 11 427
J.G. Rodríguez Spain 11 240 0.9× 116 1.0× 38 0.4× 20 0.4× 25 0.6× 44 357
J. Bartulín Chile 10 192 0.7× 73 0.6× 31 0.3× 28 0.6× 53 1.2× 36 330
Deyin Huang China 12 135 0.5× 183 1.5× 51 0.5× 33 0.7× 40 0.9× 32 402

Countries citing papers authored by David Leppard

Since Specialization
Citations

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

Fields of papers citing papers by David Leppard

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of David Leppard

This figure shows the co-authorship network connecting the top 25 collaborators of David Leppard. A scholar is included among the top collaborators of David Leppard 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 David Leppard. David Leppard 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.
Stein, Martin, Horst Krämer, Peter Fischer, et al.. (2007). Probing the Intramolecular Hydrogen Bond of 2-(2-Hydroxyphenyl)benzotriazoles in Polar Environment:  A Photophysical Study of UV Absorber Efficiency. The Journal of Physical Chemistry A. 111(39). 9733–9744. 34 indexed citations
2.
Stein, Martin, Horst Krämer, Achim Hartschuh, et al.. (2002). Influence of Polymer Matrices on the Photophysical Properties of UV Absorbers. The Journal of Physical Chemistry A. 106(37). 8834–8834. 17 indexed citations
3.
Stein, Martin, et al.. (2001). Irradiation-dependent equilibrium between open and closed form of UV absorbers of the 2-(2-hydroxyphenyl)-1,3,5-triazine type. Research on Chemical Intermediates. 27(1-2). 5–20. 3 indexed citations
4.
Stein, Martin, Horst Krämer, Achim Hartschuh, et al.. (2001). Influence of Polymer Matrixes on the Photophysical Properties of UV Absorbers. The Journal of Physical Chemistry A. 106(10). 2055–2066. 24 indexed citations
5.
Krämer, Horst, Peter M. Fischer, Pascal Hayoz, et al.. (2000). Photochemical and Photophysical Deactivation of 2,4,6-Triaryl-1,3,5-triazines. The Journal of Physical Chemistry A. 104(35). 8296–8306. 31 indexed citations
6.
Stein, Martin, et al.. (2000). Light-Induced Opening of the Intramolecular Hydrogen Bond of UV Absorbers of the 2-(2-Hydroxyphenyl)-1,3,5-triazine and the 2-(2-Hydroxyphenyl)benzotriazole Type. The Journal of Physical Chemistry A. 104(6). 1100–1106. 35 indexed citations
7.
Dietliker, Kurt, et al.. (1996). Recent developments in photoinitiators. Progress in Organic Coatings. 27(1-4). 227–239. 100 indexed citations
8.
Dietliker, Kurt, Paul Dubs, Urszula Kolczak, et al.. (1996). ESR- and CIDNP-investigation of industrial additives. Applied Magnetic Resonance. 10(1-3). 395–412. 4 indexed citations
9.
Cunningham, Allan F., et al.. (1994). Recent Developments in Radical Photoinitiator Chemistry. CHIMIA International Journal for Chemistry. 48(9). 423–423. 7 indexed citations
10.
Leppard, David, et al.. (1977). Stereoselective formation and rearrangements of naphthalen-2(1H)-one epoxides. Journal of the Chemical Society Perkin Transactions 1. 1325–1325. 4 indexed citations
11.
Leppard, David, et al.. (1977). Decomposition of a 1-hydroperoxynaphthalen-2(1H)-one by bases. Journal of the Chemical Society Perkin Transactions 1. 1329–1329. 3 indexed citations
12.
Leppard, David, Peter W. Raynolds, Christopher B. Chapleo, & Aǹdré S. Dreiding. (1976). Preparation of 4‐(4′‐Methyl‐2′‐oxo‐cyclohex‐3′‐en‐1′ ‐yl) ‐ pentan‐1‐ol and Derivatives of 3‐(4′‐Methyl‐2′‐oxo‐cyclohex‐3′ ‐en‐1′ ‐yl)‐ butan‐1‐ol. Helvetica Chimica Acta. 59(2). 695–711. 6 indexed citations
13.
Leppard, David, et al.. (1976). 13C NMR spectroscopy XI. 4H-indenediiron pentacarbonyl complexes. Journal of Organometallic Chemistry. 110(3). 359–365. 9 indexed citations
14.
Leppard, David, et al.. (1976). Hydroperoxynaphthalenones from the mild autoxidation of certain simple 1-alkyl-2-naphthols. Journal of the Chemical Society Perkin Transactions 1. 2570–2570. 9 indexed citations
15.
Skattebøl, Lars, et al.. (1975). Preparation of Mikanecic Ester and its precursor, 1,3‐butadiene‐2‐carboxylic ester. Helvetica Chimica Acta. 58(7). 2061–2073. 33 indexed citations
16.
Leppard, David, et al.. (1974). The structure of Arteannuin B and its Acid Hydrolysis Product. Helvetica Chimica Acta. 57(3). 602–615. 12 indexed citations
17.
Brady, Paul A., et al.. (1972). The Friedel-Crafts t-butylation of 2-naphthol. Tetrahedron Letters. 13(41). 4183–4186. 4 indexed citations
18.
Foreman, Michael & David Leppard. (1971). NMR spectra of organometallic compounds: use of a lanthanide shift reagent. Journal of Organometallic Chemistry. 31(2). C31–C33. 13 indexed citations
19.
Iball, J., et al.. (1969). The structure of the anti head-to-head photodimer of 1,1-dimethyl-2(1H)-naphthalenone. Journal of the Chemical Society D Chemical Communications. 1218–1218. 4 indexed citations
20.
Leppard, David, et al.. (1968). A new route to 2-alkyl-1,4-naphthaquinones involving skeletal rearrangement. Chemical Communications (London). 822–822.

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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