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Submitted on: 19 January 2006.
Revised on: 20 April 2006.
Accepted on: 05 May 2006.
___________________CHEMICAL COMMUNICATIONS---ROYAL SOC CHEMISTRY
Submitted on: 15 August 2003.
Revised on: 19 October 2003.
Accepted on: 03 November 2003.
___________________CHEMICAL COMMUNICATIONS---ROYAL SOC CHEMISTRY
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http://reply.papertrans.cn/1/51/5086/5086-35.png
Submitted on: 12 February 2016.
Revised on: 17 May 2016.
Accepted on: 06 June 2016.
___________________CHEMICAL COMMUNICATIONS---ROYAL SOC CHEMISTRY