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Beilstein J. Org. Chem. 2011, 7, 638–647, doi:10.3762/bjoc.7.75
Graphical Abstract
Scheme 1: Synthesis of the monomers. i) R–Br, 50% KOH, benzene, TBAB, 80 °C, 2 h; ii) AcCl, AlCl3, CHCl3, 0 °...
Scheme 2: Synthesis of poly[3,6-N-alkylcarbazole-4-(3-substituted phenyl)pyridine-2,5-diyl]. i) CH3COONH4, CH3...
Scheme 3: Proposed mechanism of pyridine ring formation.
Figure 1: 1H NMR spectra of (a) monomer 2a and (b) polymer P1a.
Figure 2: Zimm plot for P2a in THF at room temperature.
Figure 3: Thermogravimetric analysis curve of P1a.
Figure 4: TGA curves of polymers (a) P1 and (b) P2.
Figure 5: DSC graph for polymer P1a.
Figure 6: UV–vis spectra of the polymers of (a) series P1 and (b) series P2.
Figure 7: Photoluminescence spectra of polymers P1and P2 in CHCl3 solution.
Figure 8: (a) Polymers of P2 series in visible light; (b) observed fluorescence (CHCl3 dilute solutions) unde...