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Conducting Polymer–Synthesis and Properties of an Unsymmetrical Disubstituted Polyacetylene–Polyiodocyanoacetylene
Author(s) -
Hsieh BorTsung,
Jiang George JangJyi
Publication year - 1990
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199000038
Subject(s) - polyacetylene , chemistry , polymer , polymerization , acetylene , yield (engineering) , polymer chemistry , solid state , chemical engineering , semiconductor , organic chemistry , composite material , optoelectronics , materials science , engineering
The unsymmetrical disubstituted acetylene, iodocyanoacetylene (ICA), can be polymerized at 140°C in the solid state in high yield. The resulting polymer, polyiodocyanoacetylene (PICA), is a black lustrous stripe having the structure of . If the polymerization temperature is raised above 160°C, part of the iodine will split off from the polymer. However, at higher temperatures, the cyclization reaction occurs and the ladder polymer is formed. The conductivities of the pristine‐PICA and its ladder polymers are all in the semiconductor region.