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本文系统地研究了稀土聚乙炔的电子自旋共振(ESR)行为。发现稀土聚乙炔的ESR谱都为单线谱,符合Lorentz线型;十五种稀土环烷酸盐体系聚乙炔的ESR无明显区别,g因子为2.0028±0.0001;线宽(△H)和logN(N为未成对电子浓度)与聚乙炔的顺式含量成直线关系;未成对电子的形成服从零级动力学,其活化能为11.3kcal/mol;微量碘掺杂聚乙炔的ESR仍为单线谱、Lorentz型及g因子不变,碘掺杂浓度大于～2mol％时,没有ESR信号。
In this paper, we systematically studied the electron spin resonance (ESR) behavior of rare earth polyacetylene. The results showed that ESR spectra of rare earth polyacetylene were single line spectra and accord with Lorentz line pattern. The ESR of fifteen rare earth naphthenate system polyacetylene showed no significant difference with g factor of 2.0028 ± 0.0001; line width (△ H) and logN N is the unpaired electron concentration) is linear with the cis content of polyacetylene. The formation of unpaired electrons obeys zero-order kinetics and the activation energy is 11.3 kcal / mol. The ESR of trace iodine-doped polyacetylene is still a single line spectrum , Lorentz type and g factor unchanged, iodine doping concentration greater than ~ 2mol%, there is no ESR signal.