1. Department of Chemistry and the Materials Research Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
2. Polyera Corporation, 8045 Lamon Avenue, Skokie, Illinois 60077, United States
3. Department of Chemical Engineering, Hanbat National University, 16-1 Dukmyung-dong, Yuseong-gu, Daejeon, 305-719, Republic of Korea
4. Convergence Components & Materials Laboratory, Electronics and Telecommunications Research Institute (ETRI), 138 Gajeongno, Yuseong-gu, Daejeon 305-350, Republic of Korea