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首页> 美国政府科技报告 >Infrared Investigations of Pristine Polypyrrole - Is the Polymer CalledPolypyrrole Really Poly(Pyrrole-Co-Hydroxypyrrole)
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Infrared Investigations of Pristine Polypyrrole - Is the Polymer CalledPolypyrrole Really Poly(Pyrrole-Co-Hydroxypyrrole)

机译：原始聚吡咯的红外研究 - 被称为聚吡咯的聚合物真正聚（吡咯 - 羟基吡咯）

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Polypyrrole (PPY) is one of the most extensively investigated of theelectronically conductive polymers. Nevertheless, there is still much we don't understand about this interesting and useful material. One of the most persistent mysteries involves simple chemical composition. Doped PPy should have the empirical formula C4 H3 NX where X is the dopant counterion and z is the fractional doping level; z is typically on the order of 0.3. However, elemental analyses of PPy typically show empirical formulas like C4 H 3 NX z 0 y where y ranges from 0.3 to 0.7 unaccounted for oxygen atoms per pyrrole ring. This paper presents IR spectral data which suggests that the oxygen in PPy is present as covalently-bound hydroxide. Analogous IR investigations of poly(N-methylpyrrole) films show that this polymer is also hydroxylated The hydroxy substitution present in these polymers undoubtedly results from nucleophilic attack by water on the nascent polycationic chains.

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