Abstract
In this research, a conjugated copolymer based on phenoxazine and fluorene units was synthesized via palladium-catalyzed Suzuki–Miyaura coupling polymerization in the presence of a Pd catalyst and K2CO3 as the base. The number-average molecular weight of conjugated polymers was obtained to be approximately 2616 g/mol with a polydispersity index of 1.65. The yield of polymerization was established to be approximately 29%. The chemical structure, average molecular weights and optical properties of the conjugated polymer were characterized via proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared (FT-IR) spectroscopies, gel permeation chromatography (GPC), UV−vis and fluorescence spectroscopies. The conjugated polymer showed an optical band gap of 2.09 eV. The obtained conjugated polymers displayed fluorescence properties under an excitation wavelength of 400 nm. The conjugated polymers exhibit potential as activated layers in organic solar cells, proving the analysis results.
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