1. Department of Chemistry; National Institute of Technology Manipur; 795004 Langol, Imphal Manipur India
2. Department of Chemistry; Korea Advanced Institute of Science & Technology (KAIST); 34141 Daejeon 305 - 701 South Korea
3. Department of Chemistry; BITS Pilani; Pilani Campus 333031 Pilani Rajasthan India
4. Institut für Chemie; Universität Hohenheim; Garbenstr. 30 70599 Stuttgart Germany