College of Chemistry and Environmental Science,
Key Laboratory of Green Chemical Media and Reactions of Ministry of Education,
Henan Normal University,
Xinxiang 453007, Henan, China.
Fax: 86 373 3329276;
Tel: 86 373 3329255;
E-mail: guohm518@hotmail.com; guohm518@163.com; ghm@htu.edu.cn
MSN: guohm518@hotmail.com