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- W1973813205 abstract "Abstract Two organic phosphors 5,5'-(4-pyridinylmethylene)bis[1,3-dimethyl-2,4,6-(1H,3H,5H)-pyrimidinetrione] (BP) and 5,5'-(4-nitrophenylmethylene)bis[1,3-dimethyl-2,4,6-(1H,3H,5H)-pyrimidinetrione] (BP-NO2) have been synthesized through a one pot reaction of N,N-dimethylbarbituric acid and pyridine aldehyde in acetonitrile at 80 °C. The synthesized phosphors were characterized by single-crystal X-ray crystallography, Fourier transform infrared spectroscopy, UV–vis spectroscopy, thermogravimetry analysis and photoluminescence (PL) spectroscopy. A broadband PL emission spectrum ranging from 400 to 800 nm was recorded from both phosphors. The BP showed a luminescence peak at ca. 560 nm (2.21 eV), while the BP-NO2 exhibited a peak at 590 nm (2.1 eV), which reflect pure yellow emissions. The optimized geometry of the phosphors has been studied with a quantum chemical approach using the density functional theory. The highest occupied and lowest unoccupied molecular orbitals are predicted from the calculations." @default.
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- W1973813205 date "2014-05-01" @default.
- W1973813205 modified "2023-10-18" @default.
- W1973813205 title "Synthesis of yellow emitting bis-pyrimidine based purely organic phosphors" @default.
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- W1973813205 doi "https://doi.org/10.1016/j.jlumin.2014.01.017" @default.
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