1. Key Laboratory of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao City 266042, People’s Republic of China
2. Department of Medicinal Chemistry, School of Pharmacy, Faculty of Medicine, the Hebrew University of Jerusalem, P.O. Box 12065, Jerusalem 91120, Israel
3. Department of Chemistry, School of Science and Technology, and Research Center for Environment Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan