Parallel synthesis of donor-acceptor π-conjugated polymers by post-element transformation of organotitanium polymer oleh Yoshimasa Matsumura, Alvin Tanudjaja, Mizuki Fukushima, Makoto Higuchi, Shin Ogino, Makoto Ishidoshiro, Yasuyuki Irie, Hiroaki Imoto, Kensuke Naka, Ryoyu Hifumi, Shinsuke Inagi, Ikuyoshi Tomita