"Toshihide Hasegawa,Yasuhito Koyama,Ryota Seto,Takahiro Kojima,katsumoto hosokawa,Toshikazu Takata","Diphenolic 9,9-Diarylfluorene Trimers and Derivatives Possessing Flexible Alkylene Chain Spacers: Synthesis of the Monomers, Their Polymerization, and Properties of the Resulting Polymers",,"Macromolecules","ACS","Vol. 43",,"pp. 131-136",2010,Jan.