1. Department of Chemistry, Kocaeli University, 41300, İzmit, Kocaeli, Turkey, Department of Chemistry, TUBITAK, Marmara Research Center, MKTAE, P.O. Box 21, 41470, Gebze, Kocaeli, Turkey, and Department of Chemistry and Physics, The Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, U.K.