1. Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, New Cairo 11835, Egypt
2. Chemistry Department, Faculty of Science, Menoufia University, Shebin El-Kom 32512, Egypt
3. Center for Materials Science, Zewail City of Science and Technology, 6th of October 12578, Giza, Egypt
4. Department of Nanobiophotonics, Leibniz Institute for Photonic Technology, Albert Einstein Str. 9, Jena 07745, Germany