"Zhaozhong Yi,Hitoshi Okuda,Yasuhito Koyama,Ryota Seto,Satoshi Uchida,Hiromitsu Sogawa,Shigeki Kuwata,Toshikazu Takata","Exact Helical Polymer Synthesis by Two-Point-Covalent-Linking Protocol between C2-Chiral Spirobifluorene and C2- or Cs-Symmetric Anthraquinone Monomers",,"Chemical Communications","Royal Society of Chemistry","vol. 51","no. 52","pp. 10423-10426",2015,May