Synthesis and properties of a soluble and widely conjugated polyacetylene with anthryl pendant

Molecular weight and configurational stability of poly(phenylacetylene) prepared with Rh catalyst

“…In the FTIR spectra of F2 and F3 a new weak band was distinguishable at about 1730 cm À1 . This band can be ascribed to carbonyl groups that are considered as products of oxidative degradation of polyacetylenes [57,66,86]. Position and relative intensities of all the other bans did not alter with MW and configuration of individual fractions and well corresponded to bands described in IR spectra of PPhAs prepared with Rh catalysts [91].…”

SEC/DAD and1H NMR Study of Molecular Weight and Configurational Stability of Poly(2,4-difluorophenylacetylene) and Polyphenylacetylene Prepared with Rh Catalyst

“…The MW stability of monosubstituted cis/trans polyacetylenes in air at room or slightly higher temperature was studied in 1980s and 1990s by various research groups [32,48,[55][56][57][58][59][60][61][62] including our group. [63][64][65][66][67] Probably the first work on this subject was done by Percec and co-workers who described the slow decrease in molecular weight (MW), i.e., degradation, of lower-MW polyphenylacetylene (PPhA) when it was exposed to the atmosphere in the solid state.…”