198291-05-3Relevant academic research and scientific papers
Dendritic and hyperbranched polyphenylenes via a simple Diels-Alder route
Morgenroth, Frank,Muellen, Klaus
, p. 15349 - 15366 (1997)
A Diels-Alder route to dendritic and hyperbranched polyphenylenes, based on hexa(penta)phenylbenzene units, is described. Using ethynyl-, propynyl- and phenylethynyl-substituted tetraphenylcyclopentadienones 1c-e, hyperbranched polymers with molecular weights M(w) as high as 107,000 g mol- 1 are obtained. The new dendritic polyphenylene 5c is synthesized starting from 3,3',5,5'-tetraethynylbiphenyl (2c) via a repetitive Diels-Alder- deprotection sequence, employing tetraphenylcyclopentadienones 1a and 1b.
2,5-Diphenyl-3,4-bis[p-(phenylethynyl)phenyl]cyclopentadienone and product of its Diels - Alder homocondensation
Rusanov,Keshtov,Shchegolikhin,Petrovskii,Belomoina,Keshtova,Timofeeva,Ronova,Muellen,Morgenroth
, p. 944 - 948 (1999)
A new monomer of the ABA type, 2,5-diphenyl-3,4-bis[p-(phenylethynyl)phenyl]cyclopentadienone, was synthesized. The Diels - Aider homocondensation of the monomer resulted in a highly branched polyphenylene (Mw = 160000), readily soluble in orga
Polyphenylene oligomers and polymers
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Example 1C(d), (2008/06/13)
The present invention refers to aromatic monomers containing at least one cyclopentadienone moiety and at least one acetylene moiety and oligomers, uncured polymers and cured polymers comprising the reaction product thereof.
