1. School of Materials Science and Engineering; Nanyang Technological University Singapore; 639798 Singapore Singapore
2. Temasek Laboratories @NTU; Nanyang Technological University Singapore; Research Techno Plaza, 50 Nanyang Drive 637553 Singapore Singapore
3. Computational Center for Molecular Science; College of Chemistry; Nankai University; Tianjin 300071 China
4. Division of Chemistry and Biological Chemistry; School of Physical and Mathematics Science; Nanyang Technological University Singapore; 637371 Singapore Singapore
5. Graduate School of Materials Science; Nara Institute of Science and Technology (NAIST); 8916-5 Takayama-choIkoma Japan