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Synthesis and Characterization of Cross‐Linked Poly( p ‐phenylene ethynylene)s
Author(s) -
Hittinger Eric,
Kokil Akshay,
Weder Christoph
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200300261
Subject(s) - condensation polymer , conjugated system , polymer chemistry , schematic , polymer , linker , materials science , polymerization , representation (politics) , phenylene , poly(p phenylene) , benzene , chemistry , organic chemistry , computer science , composite material , electronic engineering , politics , law , engineering , operating system , political science
Summary: Conjugated poly( p ‐phenylene ethynylene) networks with interesting optoelectronic properties were synthesized by the palladium‐catalyzed polycondensation of 2,5‐diiodo‐4‐[(2‐ethylhexyl)oxy]methoxybenzene, and 1,4‐diethynyl‐2,5‐bis‐(octyloxy)benzene, with 1,2,4‐tribromobenzene as cross‐linker. The cross‐linker concentration was varied and materials with different cross‐link densities were prepared. The materials were processed into films by simultaneous polymerization and shaping. An alternative approach is to synthesize these cross‐linked polymers in the form of spherical particles, which can be processed from dispersions.Schematic representation of the cross‐linking process.