Band gap tuning of narrow-polydispersity two-dimensional conductive polymers with electroactive side-chains
Yi-Lung Yang, Yi-Huan Lee, Yu-Ping Lee, Chi-Ju Chiang, Fong-Yu Hsu, Wei-Chun Hsu, Man-kit Leung, Leeyih Wang, Chi-An Dai, Yoshihiro Ohta and Tsutomu Yokozawa
Article first published online: 20 FEB 2014 | DOI: 10.1002/pola.27107
Donor-acceptor-donor polymers exhibit strong intramolecular charge transfer absorption, resulting in better light harvesting. Narrow polydispersity polymers were prepared to investigate chain length effect on optoelectronic property. From the prepared uniform D1–A(D2) structures, the limiting values for the band gap energy (Eg) of the three polymers, PTPQT, PFPQT, and PCPQT was determined to be 1.78, 1.80, and 1.75 eV, respectively. In summary, the 2-D conducting polymers show potential for use as an active material in optoelectronic devices.