2-苯基噻吩的电化学聚合

聚噻吩及其衍生物是一类重要的导电高分子材料，它们具有良好的导电性、高度稳定性以及易于调控的分子链结构．因此，自从人们发现聚噻吩以来，噻吩类化合物，尤其是3-取代噻吩的聚合和表征一直受到人们的广泛关注1,2]．相对而言，关于2-取代噻吩的聚合几乎还是空白，以往人们对其进行电化学聚合的尝试是不成功的3]．

ELECTROPOLYMERIZATION OF 2-PHENYLTHIOPHENE

Phenylthiophene (P2PT) has been electrochemically polymerized in pure boron trifluoride diethyl ether (BFEE) solutions or in a com p osite electrolyte of BFEE and trifluoroacetic acid (TFA).The addition of a certa in amount of TFA into BFEE lowered the oxidation potential of the monomer,accelerat ed the polymerization and also increased the current efficiency of the electrosy nthesis.The morphology and electrochemical behavior of as\|grown P2PT films were studied by scanning electron microscopy and cyclic voltammetry.Poly(2\|phenylth iophene) in dedoped state is soluble in usual organic solvents such as tetrahydr ofuran and chloroform,etc.Its structure has been examined by infrared,Raman and UV\|visible spectroscopies.The molecular weight of the polymer was measured to b e about 800 Da.Fluorescent spectral studies indicate the polymer is a blue\|gree n light emitter.