聚吡咯苯甲烯及其铜螯合物的红外光谱表征

Characterization of Polypyrrylphenylmethene and its Copper Complex by Infrared Spectroscopy

用红外光谱研究吡咯、苯甲醛在常温和酸催化条件下缩聚合成的新型大π共轭高分子，红外光谱信息表明，醛基（２７３４、１７０１ｃｍ－１）已经消失，出现了与苯环共轭的α－碳双键取代基（１５７６ｃｍ－１）和吡咯环的－Ｃ＝Ｎ－键（１４９１ｃｍ－１）．这意味着产物为聚吡咯苯甲烯．吡咯Ｎ－Ｈ（３４２３ｃｍ－１的消失和Ｃ－Ｈ面内变形振动频率的特征位移，启示了含铜产物为聚吡咯苯甲烯一铜螯合物．

The spectra of condensation polymerization products of pyrrole and benzaldehyde in the presence or absence of copper acetate at room temperature were studied by IR spectroscopy. IR information indicates that the condensation product has the structure similar to polypyrrylphenylmethene (PPPM) in the absence of copper acetate, and similar to PPPM Cu chelate in the presence of copper acetate. The characteristic bands of carboxylic acid are also observed.