@article{cd578b9b98e44868a0528ad28524b553,
title = "Azoaromatic polyethers",
abstract = "A series of high molecular weight azoaromatic polyethers was prepared by the reaction of bisphenols with 4,4′-difluoroazobenzene in N-methylpyrrolidinone in the presence of anhydrous potassium carbonate. The activating influence of the aromatic azo group towards nucleophilic displacement reactions was first established by appropriate model compound studies. The polymers were amorphous in nature and tough films could be obtained upon solution casting from chloroform. The azoaromatic polyethers exhibit well defined glass transition temperatures and undergo thermal crosslinking at elevated temperature. Photo-viscosity effects due to cis-trans isomerism of the azo groups were also investigated.",
keywords = "azoaromatic polyethers, cis-trans isomerism, properties",
author = "Atul Bhatnagar and Jeff Mueller and Osborn, {D. J.} and Martin, {Tracie L.} and James Wirtz and Mohanty, {Dillip K.}",
note = "Funding Information: The authors acknowledge partial support of this project by Grant #62811 made available to D.K.M. by the Department of Chemistry and the Michigan Polymer Consortium, Grant #48450 from the FRCE committee, Central Michigan University, and Grant #62845 from the Research Excellence Fund, State of Michigan. A University Research Professorship award to D.K.M. by Central Michigan University was extremely helpful. Partial support for the purchase of the GE QE-300 n.m.r. spectrometer used in this work was provided by NSF/IL1 Grant #USE-8852049. Special thanks are due to Professors M. Spartz and A. Sharma for helpful discussions.",
year = "1995",
doi = "10.1016/0032-3861(95)94353-U",
language = "English",
volume = "36",
pages = "3019--3025",
journal = "Polymer",
issn = "0032-3861",
publisher = "Polymer",
number = "15",
}