J. Penfold

11.7k total citations · 1 hit paper
256 papers, 10.1k citations indexed

About

J. Penfold is a scholar working on Organic Chemistry, Atomic and Molecular Physics, and Optics and Physical and Theoretical Chemistry. According to data from OpenAlex, J. Penfold has authored 256 papers receiving a total of 10.1k indexed citations (citations by other indexed papers that have themselves been cited), including 171 papers in Organic Chemistry, 108 papers in Atomic and Molecular Physics, and Optics and 82 papers in Physical and Theoretical Chemistry. Recurrent topics in J. Penfold's work include Surfactants and Colloidal Systems (169 papers), Spectroscopy and Quantum Chemical Studies (90 papers) and Electrostatics and Colloid Interactions (73 papers). J. Penfold is often cited by papers focused on Surfactants and Colloidal Systems (169 papers), Spectroscopy and Quantum Chemical Studies (90 papers) and Electrostatics and Colloid Interactions (73 papers). J. Penfold collaborates with scholars based in United Kingdom, France and China. J. Penfold's co-authors include Robert K. Thomas, I. Tucker, Jian R. Lu, E. Staples, D. J. Taylor, Tao Su, Adrian R. Rennie, R. K. Thomas, Peixun Li and D. J. F. Taylor and has published in prestigious journals such as Nature, Science and Physical Review Letters.

In The Last Decade

J. Penfold

254 papers receiving 9.7k citations

Hit Papers

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What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

The application of the specular reflection of neutrons to the study of surfaces and interfaces

1990 509 citations J. Penfold, Robert K. Thomas Journal of Physics Condensed Matter profile →

Peers

Countries citing papers authored by J. Penfold

Since Specialization

Citations

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

Fields of papers citing papers by J. Penfold

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. Penfold

This figure shows the co-authorship network connecting the top 25 collaborators of J. Penfold. A scholar is included among the top collaborators of J. Penfold 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 J. Penfold. J. Penfold 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	Synthesis and interface behaviors of amino acid surfactants with naturally derived branched hydrophobic chains 2024 ·Journal of Molecular Liquids ·Xue Zhao, (unknown), (unknown), Bingbing Yuan, Linhua Song, J. Penfold, Peixun Li, Zifeng Yan	8
2	Manipulating the hydrophilic / hydrophobic balance in novel cationic surfactants by ethoxylation: The impact on adsorption and self-assembly 2024 ·Journal of Colloid and Interface Science ·Yuan Chen, (unknown), Kaka Ma, Peixun Li, J. R. P. Webster, J. Penfold, (unknown), Jürgen Allgaier, Robert M. Dalgliesh, Gregory N. Smith	4
3	The adsorption and self-assembly of biosurfactants and biosurfactant / surfactant mixtures using neutron scattering techniques 2023 ·Current Opinion in Colloid & Interface Science ·J. Penfold, Robert K. Thomas	5
4	Surfactant/biosurfactant mixing: Adsorption of saponin/nonionic surfactant mixtures at the air-water interface 2020 ·Journal of Colloid and Interface Science ·I. Tucker, (unknown), R.E. Petkova, Sarah L. Hosking, Robert K. Thomas, J. Penfold, Peixun Li, Kaka Ma, J. R. P. Webster, Rebecca J. L. Welbourn	39
5	Impact of molecular structure, headgroup and alkyl chain geometry, on the adsorption of the anionic ester sulfonate surfactants at the air-solution interface, in the presence and absence of electrolyte 2019 ·Journal of Colloid and Interface Science ·(unknown), Peixun Li, Kun Ma, Yao Chen, Mario Campana, J. Penfold, Robert K. Thomas, David W. Roberts, Hui Xu, Jordan T. Petkov, Zifeng Yan	14
6	Adsorption and self-assembly in methyl ester sulfonate surfactants, their eutectic mixtures and the role of electrolyte 2018 ·Journal of Colloid and Interface Science ·Hui Xu, Peixun Li, Kun Ma, Rebecca J. L. Welbourn, James Doutch, J. Penfold, Robert K. Thomas, David W. Roberts, Jordan T. Petkov, (unknown), (unknown)	21
7	Effects of length and hydrophilicity/hydrophobicity of diamines on self-assembly of diamine/SDS gemini-like surfactants 2017 ·Soft Matter ·(unknown), J. Penfold, Peixun Li, James Doutch, Yaxun Fan, Yilin Wang	36
8	The impact of electrolyte on the adsorption of the anionic surfactant methyl ester sulfonate at the air-solution interface: Surface multilayer formation 2017 ·Journal of Colloid and Interface Science ·Hui Xu, Robert K. Thomas, J. Penfold, Peixun Li, Kaka Ma, Rebecca J. L. Welbourn, David W. Roberts, Jordan T. Petkov	18
9	Self-assembly in dilute mixtures of non-ionic and anionic surfactants and rhamnolipd biosurfactants 2016 ·Journal of Colloid and Interface Science ·(unknown), J. Penfold, Robert K. Thomas, I. Tucker, Jordan T. Petkov, Paul S. Stevenson, İbrahim M. Banat, Roger Marchant, Michelle Rudden, Ann E. Terry, Isabelle Grillo	18
10	Anionic surfactant – Biogenic amine interactions: The role of surfactant headgroup geometry 2015 ·Journal of Colloid and Interface Science ·J. Penfold, Robert K. Thomas, Peixun Li	5
11	Impact of biogenic amine molecular weight and structure on surfactant adsorption at the air–water interface 2015 ·Journal of Colloid and Interface Science ·J. Penfold, Robert K. Thomas, Peixun Li	9
12	Kinetics of Surfactant Desorption at an Air-Solution Interface 2012 ·Science and Technology Facilities Council ·(unknown), Chris Breward, Ian M. Griffiths, P. D. Howell, J. Penfold, Robert K. Thomas, I. Tucker, Jordan T. Petkov, J. R. P. Webster	25
13	Solution Self-Assembly and Adsorption at the Air−Water Interface of the Monorhamnose and Dirhamnose Rhamnolipids and Their Mixtures 2010 ·Langmuir ·(unknown), J. Penfold, Robert K. Thomas, Thomas J. Smyth, Amedea Perfumo, Roger Marchant, İbrahim M. Banat, Paul S. Stevenson, (unknown), I. Tucker, Isabelle Grillo	95
14	Polymer/surfactant interactions at the air/water interface 2007 ·Advances in Colloid and Interface Science ·D. J. Taylor, Robert K. Thomas, J. Penfold	405
15	Influence of the Polyelectrolyte Poly(ethyleneimine) on the Adsorption of Surfactant Mixtures of Sodium Dodecyl Sulfate and Monododecyl Hexaethylene Glycol at the Air−Solution Interface 2006 ·Langmuir ·J. Penfold, I. Tucker, Robert K. Thomas, D. J. Taylor, Jie Zhang, Christopher G. Bell	31
16	The structure of mixed nonionic surfactant monolayers at the air–water interface: the effects of different alkyl chain lengths 2003 ·Journal of Colloid and Interface Science ·J. Penfold, E. Staples, I. Tucker, Robert K. Thomas, (unknown), C. C. Dong	20
17	The structure and composition of surfactant-polymer mixtures of sodium dodecyl sulphate, hexaethylene glycol monododecyl ether and poly-(dimethyldialyl ammonium chloride) adsorbed at the air-water interface 2000 ·Journal of Physics Condensed Matter ·E. Staples, I. Tucker, J. Penfold, Nicholas J. Warren, Robert K. Thomas	18
18	Adsorption of ammonium perfluorooctanoate and ammonium decanoate at the air/solution interface 1992 ·Journal of the Chemical Society Faraday Transactions ·E. A. Simister, (unknown), Jian R. Lu, Robert K. Thomas, R. H. Ottewill, Adrian R. Rennie, J. Penfold	24
19	Coupling of spectrin and polylysine to phospholipid monolayers studied by specular reflection of neutrons 1991 ·Biophysical Journal ·Sean Johnson, T. M. Bayerl, (unknown), (unknown), J. Penfold, Robert K. Thomas, (unknown), Adrian R. Rennie, E. Sackmann	42
20	Investigation and growth of multilayers 1990 ·DORA Empa (Swiss Federal Laboratories for Materials Science and Technology (Empa)) ·P. Böni, I. S. Anderson, Roland Hauert, P. Rutérana, (unknown), B. Farnoux, (unknown), J. Penfold, O. Schärpf	1

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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