1. Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 106, Taiwan
2. Department of Chemistry, Stella Maris College, Affiliated to the University of Madras, Chennai, Tamil Nadu 600086, India
3. Department of Chemistry, National Taiwan University, No. 1, Roosevelt Road, Section 4, Taipei 10617, Taiwan
4. Institute of Atomic and Molecular Sciences, Academia Sinica, No. 1, Roosevelt Road, Section 4, Taipei 10617, Taiwan