6533b7d9fe1ef96bd126d4ff
RESEARCH PRODUCT
false
Rolf C. SchulzReiner Giesasubject
chemistry.chemical_classificationNMR spectra databasechemistry.chemical_compoundMonomerCondensation polymerchemistryPolymer chemistryThermal decompositionSide chainchemistry.chemical_elementThermal stabilityPolymerPalladiumdescription
New monomers are described for the synthesis of rod-like poly(1,4-phenyleneethynylene)s with long flexible aliphatic side chains. By palladium catalyzed polycondensation soluble polymers with melting points around 100°C could be obtained. The molecular weight was estimated by GPC, VPO and elemental analysis: GPC showed a multimodale distribution with Pn = 9–15. NMR spectra were found to be in agreement with the assumed polymer structure, but signals of the acetylenic carbons could not be detected. A broad, structureless absorption with a maximum at λ = 410 nm is seen in the UV-VIS-spectra. The thermal decomposition of the substituted PPE's starts at about 400°C and is comparable to that of unsubstituted PPE in air.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-04-01 | Die Makromolekulare Chemie |