Thermodynamic synthesis of solution processable ladder polymers† †Electronic supplementary information (ESI) available: Detailed experimental procedures, characterization data, NMR spectra, and crystallographic data (CIF). CCDC 1040797. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5sc02385h Click here for additional data file. Click here for additional data file
| Autor: | Lee, Jongbok, Rajeeva, Bharath Bangalore, Yuan, Tianyu, Guo, Zi-Hao, Lin, Yen-Hao, Al-Hashimi, Mohammed, Zheng, Yuebing, Fang, Lei |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Chemical Science |
| ISSN: | 2041-6539 2041-6520 |
| Popis: | The synthesis of a carbazole-derived, well-defined ladder polymer was achieved under thermodynamic control by employing reversible ring-closing olefin metathesis. The synthesis of a carbazole-derived, well-defined ladder polymer was achieved under thermodynamic control by employing reversible ring-closing olefin metathesis. This unique approach featured mild conditions and excellent efficiency, affording the ladder polymer backbone with minimum levels of unreacted defects. Rigorous NMR analysis on a 13C isotope-enriched product revealed that the main-chain contained less than 1% of unreacted precursory vinyl groups. The rigid conformation of the ladder-type backbone was confirmed by photophysical analysis, while the extended rod-like structure was visualized under scanning tunneling microscope. Excellent solubility of this polymer in common organic solvents allowed for feasible processing of thin films using solution-casting techniques. Atomic force microscopy and grazing incident X-ray scattering revealed a uniform and amorphous morphology of these films, in sharp contrast to the polycrystalline thin films of its small molecular counterpart. |
| Databáze: | OpenAIRE |
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