The authors would like to clarify the affiliation list of the published article to correctly show where the work was conducted. In the original article, the address at the time of publication of one author (Amanda A Frick) was isted as an affiliation. However, the work was conducted at the Université de Lausanne. The corrected list of affiliations at the time of publication of the original article is presented here. The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.