1. a Department of Chemistry , The Islamic University of Gaza , Gaza , Palestine
2. b Department of Chemistry , Al-Azhar University , Gaza , Palestine
3. c ITODYS, Université Paris 7 – Denis Diderot , Paris , France
4. d Universite Piere Curie-Paris 6, and CNRS , College DeFrance, 11 Place Marcelin, Berthelof 75231 , Paris , France