Precise Synthesis of Novel Chain-End-Functionalized Polystyrenes with a Definite Number of Perfluorooctyl Groups and Their Surface Characterization
Precise Synthesis of Novel Chain-End-Functionalized Polystyrenes with a Definite Number of Perfluorooctyl Groups and Their Surface Characterization
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DOI：
10.1021/ma050457z
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发表时间：
2005-08
期刊：
影响因子：
5.5
通讯作者：
A. A. El-Shehawy-A.;Hideaki Yokoyama;K. Sugiyama;A. Hirao
中科院分区：
文献类型：
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作者：
A. A. El-Shehawy-A.;Hideaki Yokoyama;K. Sugiyama;A. Hirao
我们已经成功地合成了两种类型的链端官能化的聚苯乙烯与一定数量的C8 F17基团，树枝状分布和线性排列在一条双线。它们分别被称为D型和L型。在每种类型中，有三个系列的聚合物，其C8 F17基团通过苯基醚、苄基醚和苄基酯键连接到聚苯乙烯主链上。在D型和L型聚合物的链端分别引入一定数目的C_8F_17基团，其数目为2 ~ 32和1 ~ 10。所得聚合物均具有明确的结构，并且在链长和C8 F17基团的链端官能化程度方面得到精确控制。将这些聚合物浇铸成膜，退火后，通过角度依赖性X射线光电子能谱和接触角测量使用水和十二烷液滴来检查C8 F17基团的表面偏析行为。所有的C8 F17-链端官能化的聚合物显示出相当大的表面。
We have successfully synthesized two types of chain-end-functionalized polystyrenes with a definite number of C8F17 groups that are dendritically distributed and linearly aligned in a double line. They are referred to as D and L types, respectively. In each type, there are three series of polymers whose C8F17 groups are connected to the main polystyrene chains by phenyl ether, benzyl ether, and benzyl ester linkages. A definite number of C8F17 groups from 2 to 32 and 1 to 10 are introduced at the chain ends of D and L type polymers, respectively. The resulting polymers all were well-defined in architecture and precisely controlled in chain length and degree of chain-end functionalization of C8F17 group. These polymers were cast into film and, after annealing, examined the surface segregation behavior of C8F17 group by angle-dependent X-ray photoelectron spectroscopy and contact angle measurements using water and dodecane droplets. All of the C8F17-chain-end-functionalized polymers showed fairly large surf...