Diphenolic 9,9-Diarylfluorene Trimers and Derivatives Possessing Flexible Alkylene Chain Spacers: Synthesis of the Monomers, Their Polymerization, and Properties of the Resulting Polymers
作者:Toshihide Hasegawa、Yasuhito Koyama、Ryota Seto、Takahiro Kojima、Katsumoto Hosokawa、Toshikazu Takata
DOI:10.1021/ma901841y
日期:2010.1.12
diphenolic trimer was sufficiently high to afford a polycarbonate with a high molecular weight (Mw 334 000). The thermal properties (Tg and Td) of the polymers were easily controlled by adjusting the feed ratio of the 9,9-diarylfluorene trimer to 9,9-bis(4-hydroxyphenyl)fluorene. The resulting highly transparent polymers showed high refractive indices and low birefringence values originating from the cardo
合成了能够控制相应聚合物的热性能的9,9-二芳基芴基单体。单体具有连接9,9-二芳基芴单元与二酚,二元醇和二胺端基单元的柔性亚烷基链。所有这些末端单元是从常见的三聚叔醇官能化中间体合成的。通过与三光气的界面缩聚反应合成了主链上由9,9-二芳基芴三聚体结构组成的聚碳酸酯。双酚三聚体的可聚合性足够高以提供具有高分子量(M w 334 000)的聚碳酸酯。热性能(T g和T d通过调节9,9-二芳基芴三聚体与9,9-双(4-羟苯基)芴的进料比,可以容易地控制聚合物的聚合物。所得的高度透明的聚合物显示出高的折射率和低的双折射值,所述低的双折射值源自心脏结构。