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- W1972536997 abstract "Three conjugated copolymers, consisted of alternating p-phenylene-ethynylene and boron di(iso)indomethene units in the backbone, were synthesized via palladium-catalyzed Sonogashira coupling reaction of 1,4-diethynyl-2,5-dihexadecyloxybenzene and three diiodophenyl-fused BODIPY monomers. The structures and properties of the conjugated polymers were characterized by 1H NMR, 11B NMR, and Fourier transform infrared (FT-IR) spectroscopies, elemental analysis, size exclusion chromatography (SEC), UV−vis absorption spectroscopy, photoluminescence (PL) spectroscopy, and theoretical calculation using density-functional theory (DFT) method. The polymers obtained were fusible and soluble in common organic solvents including THF, benzene, toluene, CHCl3, and CH2Cl2, etc. The incorporation of the indomethene monomers into p-phenylene-ethynylene main chain led to red shifts in UV-absorption and PL spectra by extended π-conjugation of the copolymers in comparison with the monomers. Accordingly, the copolymers emitted in the range from deep-red to near-infrared region with emission spectral maxima at around 691−720 nm and exhibited high quantum yields (ΦF = 33−49%). The photostabilities of the polymers were examined by monitoring decrease of the PL spectra under continuous UV irradiation using a UV lamp under aerobic conditions. Further, their thermal stabilities were also investigated by TGA measurement." @default.
- W1972536997 created "2016-06-24" @default.
- W1972536997 creator A5016133145 @default.
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- W1972536997 date "2009-12-04" @default.
- W1972536997 modified "2023-10-14" @default.
- W1972536997 title "Aromatic Ring-Fused BODIPY-Based Conjugated Polymers Exhibiting Narrow Near-Infrared Emission Bands" @default.
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- W1972536997 doi "https://doi.org/10.1021/ma901449c" @default.
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