2-, 3- and 4-Nitrophenyl prop-2-yn-1-yl ethers were polymerized with PdCl2 in N,N-dimethylformamide (DMF) giving brown polymers soluble in DMF, dimethyl sulfoxide and N-methylpyrrolidone. Broad (mostly bimodal) molecular weight distributions were observed by size-exclusion chromatography (SEC) with maxima at molecular weight of about 4 . 103 and 1 . 105. With the same catalyst, 3-diethylaminophenyl prop-2-yn-1-yl ether gave predominantly low molecular weight homopolymer (Mn = 4 200) soluble in DMF, N-methylpyrrolidone, CHCl3 and tetrahydrofuran-soluble copolymers with 4-nitrophenyl prop-2-yn-1-yl ether (Mn about 3 000). IR, NMR and UV-VIS spectra of prepared polymers and copolymers proved the structure to consist of the polyene-type main chain with phenoxymethyl pendant groups bearing nitro or diethylamino substituents.
2-、3-和4-
硝基苯基
丙炔基醚在PdCl2的催化下,在N,N-二甲基甲酰胺(
DMF)中聚合,形成棕色聚合物,可溶于
DMF、
二甲基亚砜和
N-甲基吡咯烷酮。通过凝胶渗透色谱(
SEC)观察到宽分子量分布(主要是双峰分布),分子量最大值约为4.10^3和1.10^5。使用相同的催化剂,3-二乙
氨基苯基
丙炔基醚形成主要是低分子量均聚物(Mn = 4200),可溶于
DMF、
N-甲基吡咯烷酮、
CHCl3和
四氢呋喃-可溶共聚物与4-
硝基苯基
丙炔基醚(Mn约为3000)。所制备的聚合物和共聚物的IR、NMR和UV-VIS光谱证明其结构为具有苯氧甲基偏基的聚烯烃型主链,带有硝基或二乙
氨基取代基。