John A. Clark

843 total citations
31 papers, 663 citations indexed

About

John A. Clark is a scholar working on Physical and Theoretical Chemistry, Electrical and Electronic Engineering and Materials Chemistry. According to data from OpenAlex, John A. Clark has authored 31 papers receiving a total of 663 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Physical and Theoretical Chemistry, 11 papers in Electrical and Electronic Engineering and 10 papers in Materials Chemistry. Recurrent topics in John A. Clark's work include Photochemistry and Electron Transfer Studies (13 papers), Molecular Junctions and Nanostructures (10 papers) and Luminescence and Fluorescent Materials (7 papers). John A. Clark is often cited by papers focused on Photochemistry and Electron Transfer Studies (13 papers), Molecular Junctions and Nanostructures (10 papers) and Luminescence and Fluorescent Materials (7 papers). John A. Clark collaborates with scholars based in United States, Poland and United Kingdom. John A. Clark's co-authors include Valentine I. Vullev, Eli M. Espinoza, James B. Derr, Maryann Morales, Daniel T. Gryko, Yevgen M. Poronik, Katarzyna Rybicka‐Jasińska, Maciej Krzeszewski, Gregory J. O. Beran and Glib Baryshnikov and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Angewandte Chemie International Edition and Journal of The Electrochemical Society.

In The Last Decade

John A. Clark

30 papers receiving 648 citations

Peers

John A. Clark

EEE

PTC

ELECT

Eli M. Espinoza United States

Miguel Ponce‐Vargas France

Mohammad Vakili Iran

Songwut Suramitr Thailand

Serap Alp Türkiye

Yunyou Zhou China

Robin Tyburski Sweden

Zohreh Derikvand Iran

Zhangyu Yu China

Umamahesh Balijapalli India

Eli M. Espinoza United States

John A. Clark

453 ×1.7

EEE

412 ×1.7

283 ×1.6

253 ×2.0

PTC

195 ×1.7

ELECT

Citations per year, relative to John A. Clark John A. Clark (= 1×) peers Eli M. Espinoza

Countries citing papers authored by John A. Clark

Since Specialization

Citations

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

Fields of papers citing papers by John A. Clark

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John A. Clark

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

Espinoza, Eli M., James B. Derr, John A. Clark, et al.. (2025). Dipoles affect conformational equilibrium. Journal of Photochemistry and Photobiology A Chemistry. 465. 116362–116362. 1 indexed citations

Morales, Maryann, John A. Clark, James B. Derr, et al.. (2025). Twisting, Hydrogen Bonding, Exciplex Formation, and Charge Transfer. What Makes a Bright Fluorophore Not So Bright?. The Journal of Organic Chemistry. 90(28). 9714–9732.

Clark, John A., Eli M. Espinoza, Duoduo Bao, et al.. (2024). Poly(dimethylsiloxane) as a room-temperature solid solvent for photophysics and photochemistry. Physical Chemistry Chemical Physics. 26(10). 8062–8076. 3 indexed citations

Clark, John A., Olena Vakuliuk, Maciej Krzeszewski, et al.. (2023). The magic of biaryl linkers: the electronic coupling through them defines the propensity for excited-state symmetry breaking in quadrupolar acceptor–donor–acceptor fluorophores. Chemical Science. 14(46). 13537–13550. 10 indexed citations

Koszarna, Beata, Marzena Banasiewicz, Andrzej L. Sobolewski, et al.. (2023). Conformation of the Ester Group Governs the Photophysics of Highly Polarized Benzo[g]coumarins. JACS Au. 3(7). 1918–1930. 7 indexed citations

Clark, John A., et al.. (2022). Electrochemical Analysis in Charge-Transfer Science: Things Are Not Always What They Seem. ECS Meeting Abstracts. MA2022-02(57). 2181–2181. 2 indexed citations

Sadowski, Bartłomiej, Yevgen M. Poronik, Marzena Banasiewicz, et al.. (2021). Potent strategy towards strongly emissive nitroaromatics through a weakly electron-deficient core. Chemical Science. 12(42). 14039–14049. 29 indexed citations

Clark, John A., et al.. (2021). How does tautomerization affect the excited-state dynamics of an amino acid-derivatized corrole?. Photosynthesis Research. 148(1-2). 67–76. 6 indexed citations

Derr, James B., Beata Koszarna, John A. Clark, et al.. (2021). The Synthesis and Photophysical Properties of Weakly Coupled Diketopyrrolopyrroles. Molecules. 26(16). 4744–4744. 3 indexed citations

10.

Poronik, Yevgen M., Glib Baryshnikov, Irena Deperasińska, et al.. (2020). Deciphering the unusual fluorescence in weakly coupled bis-nitro-pyrrolo[3,2-b]pyrroles. Communications Chemistry. 3(1). 190–190. 57 indexed citations

11.

Derr, James B., John A. Clark, Maryann Morales, et al.. (2020). Multifaceted aspects of charge transfer. Physical Chemistry Chemical Physics. 22(38). 21583–21629. 35 indexed citations

12.

Silva, Gustavo T. M., Farhan Siddique, Adélia J. A. Aquino, et al.. (2019). Chromophores inspired by the colors of fruit, flowers and wine. Pure and Applied Chemistry. 92(2). 255–263. 11 indexed citations

13.

Espinoza, Eli M., et al.. (2019). Practical Aspects of Cyclic Voltammetry: How to Estimate Reduction Potentials When Irreversibility Prevails. Journal of The Electrochemical Society. 166(5). H3175–H3187. 228 indexed citations

14.

Espinoza, Eli M., John A. Clark, James B. Derr, et al.. (2018). How Do Amides Affect the Electronic Properties of Pyrene?. ACS Omega. 3(10). 12857–12867. 28 indexed citations

15.

Derr, James B., et al.. (2018). Dipole-induced effects on charge transfer and charge transport. Why do molecular electrets matter?. Canadian Journal of Chemistry. 96(9). 843–858. 24 indexed citations

16.

Krzeszewski, Maciej, Eli M. Espinoza, Ctirad Červinka, et al.. (2018). Dipole Effects on Electron Transfer are Enormous. Angewandte Chemie. 130(38). 12545–12549. 11 indexed citations

17.

Clark, John A.. (1985). Technical change and the prospects for employment—A suitable case for analysis?. European Journal of Operational Research. 20(2). 147–157. 2 indexed citations

18.

Cooper, Charles & John A. Clark. (1982). Employment, economics, and technology : the impact of technological change on the labour market. Data Archiving and Networked Services (DANS). 1 indexed citations

19.

Clark, John A.. (1980). A model of embodied technical change and employment. Technological Forecasting and Social Change. 16(1). 47–65. 13 indexed citations

20.

Clark, John A., et al.. (1979). Calibration and solutions of macro-models of technology in North-South development. Applied Mathematical Modelling. 3(3). 183–192. 4 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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