1. Department of Chemistry; University of Zanjan; P.O. Box 45195-313 Zanjan Iran
2. Department of Chemistry; Islamic Azad University-East Tehran (Ghiam Dasht) of Branch; Tehran Iran
3. Faculty of Chemistry; University of Wrocław; 14 Joliot-Curie St. 50-383 Wrocław Poland
4. School of Mechanical Engineering; Yeungnam University; Gyeongsan 712-749 Korea