1. Nanophotonics and Applications Lab, Physics Department, Faculty of ScienceBeni‐Suef University Beni‐Suef 62514 Egypt
2. Polymer Research Laboratory, Chemistry Department, Faculty of ScienceBeni‐Suef University Beni‐Suef 62514 Egypt
3. Physical Chemistry Laboratory, Chemistry Department, Faculty of ScienceBeni‐Suef University Beni‐Suef 62514 Egypt