Synthesis of θ-Shaped Poly(THF) by Electrostatic Self-Assembly and Covalent Fixation with Three-Armed Star Telechelics Having Cyclic Ammonium Salt Groups†
Synthesis of θ-Shaped Poly(THF) by Electrostatic Self-Assembly and Covalent Fixation with Three-Armed Star Telechelics Having Cyclic Ammonium Salt Groups†
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DOI：
10.1021/ma0209850
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发表时间：
2003
期刊：
影响因子：
5.5
通讯作者：
Y. Tezuka;Akiko Tsuchitani;Y. Yoshioka;H. Oike
中科院分区：
文献类型：
--
作者：
Y. Tezuka;Akiko Tsuchitani;Y. Yoshioka;H. Oike
A series of θ-shaped poly(tetrahydrofuran), poly(THF), of different molecular weights were effectively synthesized by an electrostatic self-assembly and covalent fixation process using a three-armed, star telechelic precursor having N-phenylpyrrolidinium salt groups carrying a trimesate, 1,3,5-benzene tricarboxylate, counteranion (1/trimesate). Under appropriate dilution in acetone, θ-shaped poly(THF)s (2) were obtained in 40−49% isolated yields through the covalent conversion of an electrostatic self-assembly of a single polymer precursor unit with retaining the balance of the charges between cations and anions. The isolated product was unequivocally characterized by means of 1H NMR, IR, SEC as well as a reversed-phase chromatography (RPC), and MALDI−TOF MASS techniques.
