a
State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
E-mail: lslong@xmu.edu.cn
;
Fax: +86 592 218 3047
b
Faculty of Chemistry, University of Bielefeld, P.O. Box 10 0131, D-33501 Bielefeld, Germany
c
Faculty of Physics, University of Bielefeld, P.O. Box 10 0131, D-33501 Bielefeld, Germany