Funding for this research was provided by:
University Grants Committee (AoE/P-04/08)
Research Grants Council, University Grants Committee, Hong Kong (HKU7007/11P, HKU7009/12P)
National Natural Science Foundation of China (21273186, 21322306, 21403176)
IDENTIFIERS
COPYRIGHT AND LICENSING
: The Royal Society of Chemistry has an exclusive publication licence for this journal
PEER REVIEW METHOD
: Single-blind
PUBLICATION HISTORY
: Received 20 October 2014; Advance Article published 22 January 2015; Version of Record published 23 March 2015