On July 31, 2022, Sakr, Mahmoud E. M.; Kana, Maram T. H. Abou; Elwahy, Ahmed H. M.; Abdelwahed, Mohamed S.; El-Daly, Samy A.; Ebeid, El-Zeiny M. published an article.Category: esters-buliding-blocks The title of the article was Spectroscopic Behavior and Photophysical Parameters of 2-(Acetoxymethyl)-6-(1,2,4-triazinylaminodihydroquinazolinyl)tetrahydropyran Derivative in Different Solid Hosts. And the article contained the following:
Optical and photophys. properties of 6-substituted-1,2,4-Triazine fluorescent derivative dye doped in silicate based sol-gel, homopolymer of Me methacrylate (PMMA), and copolymer (MMA/diethylene glycol dimethacrylate) (DEGDMA) were investigated. The pores of different hosts and caging of the dye were found to effect on the parameters such as molar absorptivity, cross sections of singlet-singlet electronic absorption and emission spectra, excited state lifetime, quantum yield of fluorescence. The dipole moment of electronic transition, the length of attenuation and oscillator strength of electronic transition from So → S1 have been calculated The dye was pumped with different powers using 3rd harmonic Nd: YAG laser of 355 nm and pulse duration 8 ns, with repetition rate 10 Hz. Good photo stability for dye was attained. After 55,000 pumping pulses of (10 mJ/pulse), the photo-stabilities were decreased to 53%, 48%, and 45% of the initial ASE of dye in sol gel, PMMA, and Co-polymer resp. The dye in sol-gel matrix showed improvement of photo stability compared with those in organic polymeric matrixes. The experimental process involved the reaction of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)(cas: 2358-84-1).Category: esters-buliding-blocks
The Article related to spectroscopic photophys triazinylaminodihydroquinazolinyl solid host, optical property, photophysical parameters, photostability, polymeric matrices, silicate based sol–gel, solid state laser dye and other aspects.Category: esters-buliding-blocks
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