Correction to: Nature Communications https://doi.org/10.1038/s41467-019-10764-2, published online 28 June 2019.

The original version of this Article contained an error in the author affiliations.

Affiliation 3 incorrectly read ‘Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong.’

This has now been corrected in both the PDF and HTML versions of the Article.