a
Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Japan
E-mail: adachi@cstf.kyushu-u.ac.jp
;
Fax: +81-92-802-6921
;
Tel: +81-92-802-6920
b
Functional Materials Laboratories, Nippon Steel Chemical Co., Ltd., 46-80 Nakabaru, Sakinohama, Tobata, Kitakyushu, Japan