Abstract
Poly[silylene-1,4-phenylene-(1,2,3-triazol-4-yl)-1,4-phenylene]s were prepared via step-growth Click coupling polymerization of bis( p-ethynylphenyl)silanes and 1,4-diazidobenzene. The organosilicon units in the backbones may contribute to an electronic communication among the π-conjugated units and improve the solubility of the polymers. Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance spectroscopy (NMR) were used to confirm the polymers structure. The UV–vis absorption wavelength of silicon-containing compounds red-shifted ca. 15 nm when compared with the compounds without silicon atoms. The fluorescence emission of polymers in CHCl 3 solutions was observed in visible blue region (ca. 440 nm), and the intensity and quantum yield ( Φ) were enhanced due to the influence of σ- π interaction. The results of the absorption and emission supported the weak σ- π conjugation between the silylene and aromatic segments, and these polymers can be potentially applied in organic light emitting devices (OLEDs).
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