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Citation: Yang Mujie, Cai Yiping, Wang Zheng, Sun Junguan, Shen Zhiquan. HIGHLY CONDUCTINIG HALOGEN DOPEDFILMS OF RARE-EARTH POLYACETYLENE[J]. Chinese Journal of Applied Chemistry, ;1983, 1(1): 79-86. shu

HIGHLY CONDUCTINIG HALOGEN DOPEDFILMS OF RARE-EARTH POLYACETYLENE

1.
Department of Chemistry, Zhejiang University, Hangzhou

Received Date: 29 June 1983
Available Online: 8 August 1983

A new "family" of coordination catalysts based on rare-earth for stereos-pecific polymerization of acetylene has been developed for the preparation of high cis(90%) polyacetylene(PA) films at 30℃. Rare-earth PA was silvery flexible with metallic luster. The highly conducting complexes of rare-earth PA are obtained by do poing with electron acceptors(I₂,Br₂,etc.). The maximum conductivity(σ) of doped films at room temperature is approximately 1000 ohm^-1·cm^-1 for iodine,corresponding to a concentration of about 12.5 mol% where σ has increased by some 11 orders of magnitude. The doping effect is related to the volume filling fraction of the fibrils of PA.The configuration of polymer and the extent of oxidation of the films also show a certain influences on the doping effect. The resulted polyacetylenehalogen complexes have been characterized using techniques of infrared spectrophotometry, differential scanning calorimetry,x-ray diffraction,scanning electron micrography,and electrical conductivity measurements.
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