Polyethynylferrocene
作者:
CharlesU. Pittman,
Yukihiko Sasaki,
PaulL. Grube,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1974)
卷期:
Volume 8,
issue 5
页码: 923-934
ISSN:0022-233X
年代: 1974
DOI:10.1080/00222337408066409
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The completely conjugated polymer, polyethynylferrocene, was prepared by heating ethynylferrocene with catalytic amounts of azobisisobutyronitrile to 180-240[ddot] under nitrogen in bulk. Cyclotrimerization competes with polymerization under these conditions. Pure low molecular weight polyethynylferrocene was isolated and characterized by IR and NMR spectroscopy and by a gel permeation chromatography. The pure polymer exhibits a conductivity of 2 × 10−14−1cm−1. Attempts to prepare polyethynylferrocene by heating acetylferrocene in molten zinc chloride were, contrary to literature reports, unsuccessful. A polymer containing hydroxyl and keto groups was obtained, and extensive degradation of the ferrocene groups occurred. The general reaction scheme is discussed. It includes cleavage of cyclopentadienyl rings from ferrocene and the incorporation of cyclopentane rings into the polymer structure.
点击下载:
PDF (468KB)
返 回