Abstract
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.
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