| 稀土聚乙炔的ESR研究 |
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| 引用本文： | 杨慕杰,万荣星,陈忠心,王树源,王征,沈之荃.稀土聚乙炔的ESR研究[J].高分子学报,1986,0(1):52-56. |
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| 作者姓名： | 杨慕杰 万荣星 陈忠心 王树源 王征 沈之荃 |
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| 作者单位： | 浙江大学化学系，浙江大学化学系，浙江大学化学系，浙江大学化学系，浙江大学化学系，浙江大学化学系 杭州，杭州，杭州 浙江大学化学系1983年度毕业生，杭州，杭州，杭州 |
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| 摘 要： | 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。
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| 收稿时间： | 1983-11-09 |
ELECTRON SPIN RESONANCE STUDY OF RARE-EARTH POLYACETYLENE |
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| YANG Mu-jie,WANG Rong-xing,CHEN Zhong-xing,WANG Shu-yuan,WANG Zhen,SHEN Zhi-quan.ELECTRON SPIN RESONANCE STUDY OF RARE-EARTH POLYACETYLENE[J].Acta Polymerica Sinica,1986,0(1):52-56. |
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| Authors: | YANG Mu-jie WANG Rong-xing CHEN Zhong-xing WANG Shu-yuan WANG Zhen SHEN Zhi-quan |
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| Institution: | Department of Chemistry; Zhejiang University; Hangzhou |
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| Abstract: | Electron Spin Eesonance (ESR) of polyacetylene (PA) prepared with rare-earth coodination catalysts have been studied. The ESB spectra of PA are found to be singlet and Lorentz. No significant changes of PA ESB by catalyst systems composed of naphthenates of all fifteen rare earth elements are observed. It was found that the ESB linewidth, Ig N (N is the unpaired electrons concentration) exhibits a straight line with the cis content, with g=2.0028±0.0001. The formation of the unpiared electrons obeys the zero-order kinetics with the activation energy 11.3kcal/mol. The lightly I2 doped rare-earth PA ESR retains singlet, Lorentz lineshape and g factor constant until I2 dopant concentration >2mol%,at which doped level the ESR signal disappeared. |
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