*
Corresponding authors
a
Department of Chemistry, Hiroshima University, 1-3-1, Kagamiyama, Higashi-hiroshima 739-8526, Japan
E-mail:
snishi@hiroshima-u.ac.jp
Fax: +81-82-424-7418
b
Institute for Advanced Materials Research, Hiroshima University, 1-3-1, Kagamiyama, Higashi-hiroshima 739-8530, Japan
c
WestCHEM, School of Chemistry, The University of Glasgow, Glasgow G12 8QQ, UK
d
College of Science, Nanjing University of Technology, Nanjing 210009, P. R. China
e
State Key Lab & Coordination Chemistry Institute, Nanjing University, Nanjing 210093, P. R. China
f
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan
g
Division of Natural and Environmental Sciences, The Open University of Japan, Chiba 261-8586, Japan
h
Technical Department, Tokyo Institute of Technology, Tokyo 152-8551, Japan
i
Graduate School of Science, Kobe University, Kobe 657-8501, Japan
j
Molecular Photoscience Research Center, Kobe University, Kobe 657-8501, Japan
k
Research Institute for Electronic Science, Hokkaido University, Kita 12 Nishi 7, Kita-ku, Sapporo 060-0812, Japan