1. Chonbuk National University, School of Semiconductor and Chemical Engineering; Baekjero 567, Deokjin-gu Jeonju Jeonbuk 561-756 Republic of Korea
2. College of Materials Science and Engineering; Shenzhen University; Shenzhen 518060 P. R. China
3. Department of Chemical Engineering; NED University of Engineering & Technology; University Road Karachi 75270 Pakistan
4. Islamic Azad University, Omidiyeh Branch, Department of Polymer; 63731-93719 Omidiyeh Iran
5. Department of Chemistry; University of North Carolina, Chapel Hill; North Carolina 27599-3290 USA