1. Department of Chemistry, National University of Singapore, 3
Science Drive 3, 117543, Singapore
2. Spectroscopy Laboratory for
Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea
3. Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 229071
Malaga, Spain
4. Key Laboratory
of Magnetic Materials
and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s
Republic of China
5. Department of Materials Science & Engineering, National University of Singapore, 119260, Singapore
6. Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
7. Institute
of Materials Research
and Engineering, A*STAR, 3 Research Link,
117602, Singapore