1. Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
2. Department of Chemistry, University of Bath, Bath, UK
3. Department of Biochemistry & Molecular Biology, University of Gujrat, Gujrat, Pakistan
4. Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
5. Advanced Light Source, Berkeley, CA, USA