... Paper) J. Mater. ... Masateru Ito a , Tian Xin Wei b , Peng-Lei Chen b , Haruhisa Akiyama b , Mutsuyoshi Matsumoto b , Kaoru Tamada b and Yoshinori Yamamoto * a a Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan. ... Materials. ...