John R. Langan

627 citations
13 papers · 532 · 1 hit paper · h-index 8

Impact in

Papers in

John R. Langan

12 papers receiving 487 citations

John R. Langan's Hit Papers

Photochromic heterocyclic fulgides. Part 3. The use of (E)-α-(2,5-dimethyl-3-furylethylidene)(isopropylidene)succinic anhydride as a simple convenient chemical actinometer 1981 · 334 citations
3340+15+30Years since publication100200300

Peers

John R. Langan
Comparison fields: 5 of 68
  • Physical and Theoretical Chemistry 145
  • Organic Chemistry 259
  • Electrochemistry 44
  • Filtration and Separation 11
  • Materials Chemistry 203
Replace George H. Parsons with:
George H. Parsons United States
Dennis W. Barnum United States
Norman B. Colthup Nicaragua
Allen E. Cahill United States
E. F. Zwicker United States
Hideko Koshima Japan
Marian Wolszczak Poland
Richard R. Hautala United States
J. A. A. Moreira Portugal
William G. Hodgson United Kingdom
John R. Langan relative to George H. Parsons United States George H. Parsons's profile →
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Citations per year

Countries citing papers authored by John R. Langan

Since Specialization
Citations

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

Fields of papers citing papers by John R. Langan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John R. Langan. 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 John R. Langan. The network helps show where John R. Langan may publish in the future.

Co-authors

The 10 scholars most cited alongside John R. Langan, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with John R. Langan Line = papers co-authored together John R. Langan links everyone, so they are left out of the graph.

All Works

13 of 13 papers shown
#Work
1
Photochromic heterocyclic fulgides. Part 3. The use of (E)-α-(2,5-dimethyl-3-furylethylidene)(isopropylidene)succinic anhydride as a simple convenient chemical actinometer
Hit paper breakdown →
1981334
2 198648
3
Ligand assay : analysis of international developments on isotopic and nonisotopic immunoassay
198142
4 198738
5 199424
6 198211
7 19848
8 19897
9 19837
10 19886
11 19864
12 19882
13 19891

About John R. Langan

John R. Langan is a scholar working on Physical and Theoretical Chemistry, Organic Chemistry, Materials Chemistry, Atomic and Molecular Physics, and Optics and Electrochemistry, having authored 13 papers that have together received 532 indexed citations. Recurring topics across this work include Photochemistry and Electron Transfer Studies (8 papers), Free Radicals and Antioxidants (4 papers), Spectroscopy and Quantum Chemical Studies (2 papers), Radical Photochemical Reactions (2 papers), Electrochemical Analysis and Applications (2 papers), Chemical Reaction Mechanisms (1 paper), Photopolymerization techniques and applications (1 paper) and Catalytic Processes in Materials Science (1 paper). The work is most often cited by research in Physical and Theoretical Chemistry (145 citations), Organic Chemistry (259 citations), Electrochemistry (44 citations), Filtration and Separation (11 citations) and Materials Chemistry (203 citations). John R. Langan has collaborated with scholars based in United Kingdom, Denmark and United States. Frequent co-authors include H.G. Heller, G. Arthur Salmon, John R. Lindsay Smith, George V. Buxton, James Grimshaw, Peter P. Edwards, N. C. YANG, Abdul Amir H. Kadhum, Ahmed S. Ellaboudy and Ke Jian Liu. Their work appears in journals such as The Journal of Physical Chemistry, Tetrahedron Letters, Journal of Radioanalytical and Nuclear Chemistry, Journal of Chemical & Engineering Data and Journal of the Chemical Society Faraday Transactions.

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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