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CROSSCHECK

: This document is CrossCheck deposited

IDENTIFIERS

: Peng Wu (ResearcherID)

COPYRIGHT AND LICENSING

: The Royal Society of Chemistry has an exclusive publication licence for this journal

PUBLICATION HISTORY

: Received 7 March 2016; Accepted 22 March 2016; Accepted Manuscript published 23 March 2016; Advance Article published 8 April 2016; Version of Record published 21 April 2016