1. Department
of Chemistry, Jadavpur University, Jadavpur, Kolkata 700032, India
2. Department
of Chemistry and Polymer Science, University of Stellenbosch, Stellenbosch 7600, South Africa
3. Department
of Chemistry, Chandernagore College, Hooghly 712136, West Bengal, India
4. Departament
de Química, Universitat de les Illes Balears, Crta. de Valldemossa
km 7.5, Palma 07122, Baleares, Spain