Liquid Crystalline π-Conjugated Copolymers Bearing a Pyrimidine Type Mesogenic Group
Abstract
:1. Introduction
2. Experimental Section
2.1. Materials and Methods
2.2. Monomer synthesis
2.3. Polymerization
Polymer | Mn (×103)a, b | Mw (×103)a, c | MWDa | Yield (%)d | 19F δ (ppm)e |
---|---|---|---|---|---|
PolyPLCTh | 4.9 | 6.5 | 1.3 | 94 | 113 |
PolyPLC2Th | 3.6 | 4.5 | 1.3 | 89 | 113 |
PolyPLC3Th | 4.2 | 5.6 | 1.3 | 81 | 113 |
PolyPN2Th | 2.1 | 3.0 | 1.4 | 50 | — |
- Polystyrene standard.
- Number average molecular weight.
- Weight average molecular weight.
- Calculated by (Ws / (Wp · Wm) ) · 100, Ws: weight of the polymer sample (g), Wp: molecular weight of mru of the polymer (g/mol), Wm: molar mass of the monomer (mol)
- δ from trifluorotoluene in 19F NMR.
3. Results and Discussion
3.1. Ultraviolet–visible absorption spectra
3.2. Photoluminescence
3.3. Polarizing optical microscopy observation
3.4. Differential scanning calorimetry
3.5. X-ray diffractometry
3.6. Electron spin resonance analysis
4. Conclusions
Acknowledgements
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Kawabata, K.; Goto, H. Liquid Crystalline π-Conjugated Copolymers Bearing a Pyrimidine Type Mesogenic Group. Materials 2009, 2, 22-37. https://doi.org/10.3390/ma2010022
Kawabata K, Goto H. Liquid Crystalline π-Conjugated Copolymers Bearing a Pyrimidine Type Mesogenic Group. Materials. 2009; 2(1):22-37. https://doi.org/10.3390/ma2010022
Chicago/Turabian StyleKawabata, Kohsuke, and Hiromasa Goto. 2009. "Liquid Crystalline π-Conjugated Copolymers Bearing a Pyrimidine Type Mesogenic Group" Materials 2, no. 1: 22-37. https://doi.org/10.3390/ma2010022