In Search of Stable, High-Spin Polymers
In Search of Stable, High-Spin Polymers
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DOI：
10.1007/s00723-020-01293-z
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发表时间：
2020-10
影响因子：
1
通讯作者：
P. Hewitt;D. Shultz
中科院分区：
文献类型：
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作者：
P. Hewitt;D. Shultz
制备了侧基为S = 1/2半醌基的聚噻吩和聚邻苯乙炔的低聚物（钴配合物），并通过电子顺磁共振（EPR）谱和磁测量（超导量子干涉仪= SQUID）进行了表征。我们的研究结果表明，交换耦合的半醌基团沿着聚噻吩骨干大于相应的耦合沿着聚（邻苯乙炔）骨干。
Oligomers of poly(thiophene) and poly(ortho-phenyleneethynylene) having pendantS= 1/2 semiquinone radicals (as complexes of cobalt(III)) have been prepared and characterized by electron paramagnetic resonance (EPR) spectroscopy and magnetic measurements (superconducting quantum interferences device = SQUID magnetometry). Our results show that exchange coupling of semiquinone groups along a polythiophene backbone is greater than the corresponding coupling along a poly(ortho-phenyleneethynylene) backbone.