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- W2955809344 endingPage "121589" @default.
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- W2955809344 abstract "Conjugated copolymers were prepared from 2,7-di(thiophen-2-yl)phenanthrene-9,10-dione units with various polycyclic aromatic hydrocarbon moieties, namely, fluorene (PQF1-2), carbazole (PQC), and silafluorene (PQS). Employing mild condensation reaction conditions, PQF1-2 copolymers underwent post-modification of their ortho-dicarbonyl groups into quinoxaline- (PQF3-4) and phenazine- (PQF5-6) derivatives. The copolymers PQF1-6, PQC, and PQS were characterized by different analytical techniques, such as, gel permeation chromatography (GPC), thermogravimetric analysis (TGA), 1H- and 13C nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), UV–vis absorption, and emission spectroscopy. Post-modification of copolymers PQF1-2 led to interesting changes in the emission properties where the quinoxaline-containing copolymers PQF3-4 portrayed a 20–40 nm hypsochromic shift with a blue emission (~470 nm) whereas copolymers PQF5-6 bearing the more aromatically extended phenazine-units revealed a ~55 nm bathochromic shift displaying a green emission (~560 nm)." @default.
- W2955809344 created "2019-07-12" @default.
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- W2955809344 date "2019-09-01" @default.
- W2955809344 modified "2023-10-17" @default.
- W2955809344 title "Conjugated copolymers bearing 2,7-di(thiophen-2-yl)phenanthrene-9,10-dione units and alteration of their emission via functionalization of the ortho-dicarbonyl groups into quinoxaline and phenazine derivatives" @default.
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- W2955809344 doi "https://doi.org/10.1016/j.polymer.2019.121589" @default.
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