描述了基于六(五)苯基苯单元的树枝状和超支化聚苯撑的Diels-Alder路线。使用乙炔基,丙炔基和苯基乙炔基取代的四苯基环戊二烯酮1c-e,获得分子量M w高达107,000 g mol -1的超支化聚合物。利用四苯基环戊二烯酮1a和1b,通过重复的Diels-Alder-脱保护序列,从3,3',5,5'-四乙炔基联苯(2c)开始合成新的树枝状聚亚苯基5c。
2,5-diphenyl-3,4-bis[p-(phenylethynyl)phenyl]cyclopentadienone and product of its Diels-Alder homocondensation
作者:A. L. Rusanov、M. L. Keshtov、A. N. Shchegolikhin、P. V. Petrovskii、N. M. Belomoina、S. V. Keshtova、G. I. Timofeeva、I. A. Ronova、K. Müllen、F. Morgenroth
DOI:10.1007/bf02494642
日期:1999.5
A new monomer of the ABA type, 2,5-diphenyl-3,4-bis[p-(phenylethynyl)phenyl]-cyclopentadienone, was synthesized. The Diels-Alder homocondensation of the monomer resulted in a highly branched polyphenylene (Mw=160000), readily soluble in organic solvents. The polymer obtained is thermally stable up to 600 °C (in argon atmosphere) and has a glass transition of 280°C. The structure of the monomer and
Multifunctional unsymmetrically substituted monomers and polyarylene compositions therefrom
申请人:Godschalx P James
公开号:US20060267000A1
公开(公告)日:2006-11-30
A monomer suitable for use in forming low dielectric constant films in semiconductor devices comprising i) two dienophile groups (A-functional groups) attached to a single aromatic ring and ii) a second ring structure comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional group), characterized in that said single aromatic ring is directly covalently attached to one of the double bonded carbons of the B functional group or to a fused aromatic ring containing two such double bonded carbons of the B-functional group, and one A-functional group of one monomer is capable of reaction under cycloaddition reaction conditions with the B-functional group of a second monomer to thereby form a polymer.