About the Authors

Alasdair O. Crawford

Affiliation Department of Chemistry, University of Surrey, Guildford, Surrey, United Kingdom

Ian Hamerton

Affiliation Department of Chemistry, University of Surrey, Guildford, Surrey, United Kingdom

Gabriel Cavalli

Affiliation Department of Chemistry, University of Surrey, Guildford, Surrey, United Kingdom

Brendan J. Howlin

b.howlin@surrey.ac.uk

Affiliation Department of Chemistry, 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: AOC BJH IH GC. Performed the experiments: AOC. Analyzed the data: BJH IH GC. Contributed reagents/materials/analysis tools: BJH. Wrote the paper: BJH AOC IH.