Correction to: Nature Communications https://doi.org/10.1038/s41467-018-04291-9, published online: 10 May 2018

The original version of this Article omitted an affiliation of Xiewen Wen: ‘College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China’. This has been corrected in both the PDF and HTML versions of the Article.