Synthesis, Characterization, and Properties of Aligned Polyacetylene Films
作者:
Hideki Shirakawa,
Kazuo Akagi,
Shintaro Katayama,
Kotaro Araya,
Akio Mukoh,
Toshikazu Narahara,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1988)
卷期:
Volume 25,
issue 5-7
页码: 643-654
ISSN:0022-233X
年代: 1988
DOI:10.1080/00222338808053390
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Highly aligned polyacetylene films are synthesized by three different methods in which nematic liquid crystals are used as an ordered matrix solvent: Method 1, polymerization of acetylene is carried out in a quiescent nematic solution in which a Ti(OBu)4-AlEt3Ziegler-Natta catalyst is dissolved homogeneously; Method 2, macroscopic alignment is attained by gravity flow of the nematic liquid crystal-catalyst system; and Method 3, the nematic liquid crystal-catalyst solution is aligned under a magnetic field. Characterization of these films is carried out through SEM observation and measurements of polarized visible and infrared absorption spectra. Results indicate that as-prepared films have highly aligned fibrils. Upon doping by I2and AsF5, these films exhibit high electrical condactivity of the order of 104S/cm.
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