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Poly(3-(2,5-dioctylphenyl)thiophene) Synthesized by Direct Arylation Polycondensation: End Groups, Defects, and Crystallinity
| Content Provider | Semantic Scholar |
|---|---|
| Author | Schiefer, Daniel Komber, Hartmut Keheze, Fanuel Mugwanga Kunz, Susanna Hanselmann, Ralf Reiter, Günter Sommer, Michael |
| Copyright Year | 2016 |
| Abstract | One property central to π-conjugated polymers is the ability of polymer backbones to interact intermolecularly through the direct contact of π-orbitals. Poly(3-(2,5-dioctylphenyl)thiophene) (PDOPT) is a remarkable exception as the bulky side chains prohibit main chain π–π interactions. However, due to side-chain crystallization of interdigitated n-octyl side chains, PDOPT is semicrystalline, and thus any deviation from a perfect regioregularity can severely affect crystallization. Here, we synthesize PDOPT via direct arylation polycondensation (DAP) for the first time and analyze the effect of various reaction conditions on molecular weight, end groups, defect structures, crystallinity, and morphology. Despite extensive optimization of PDOPT synthesis via DAP including bulk polymerization, MW is limited to Mn,SEC ∼ 10 kg/mol as a result of dehalogenation of chain ends. Extensive NMR spectroscopy is carried out to analyze defect structures present in PDOPT made by DAP and also made by Kumada catalyst trans... |
| Starting Page | 7230 |
| Ending Page | 7237 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/acs.macromol.6b01795 |
| Alternate Webpage(s) | https://s3-eu-west-1.amazonaws.com/pstorage-acs-6854636/6013845/ma6b01795_si_001.pdf |
| Alternate Webpage(s) | https://doi.org/10.1021/acs.macromol.6b01795 |
| Volume Number | 49 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
