He, Xin
Li, Quanlong
Shi, Pengfei
Cui, Yongliang
Li, Shentong
Zhang, Wangqing
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COPYRIGHT AND LICENSING
: The Royal Society of Chemistry has an exclusive publication licence for this journal
OPEN ACCESS: The accepted version of this article will be made freely available after a 12 month embargo period
PUBLICATION HISTORY
: Received 6 August 2014; Accepted 2 September 2014; Accepted Manuscript published 3 September 2014; Advance Article published 16 September 2014; Version of Record published 11 November 2014