About the Authors

Grace H. C. Edmund

Affiliation Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, United Kingdom

David F. V. Lewis

† Deceased.

Affiliation Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, United Kingdom

Brendan J. Howlin

b.howlin@surrey.ac.uk

Affiliation Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GHCE BJH DFVL. Performed the experiments: GHCE. Contributed reagents/materials/analysis tools: GHCE BJH. Wrote the paper: GHCE BJH.