Photochemical and laser activity of 1,4-bis[ß-(2-quinoxalyl)vinyl]benzene: a new laser dye
作者： Tarek A. Fayed , Samy A. El-Daly , Safaa Eldin H. Etaiw
DOI: 10.1016/S1010-6030(98)00469-9
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摘要: Abstract The title diolefinic dye (BQxVB) was synthesized and its spectral characteristics were investigated in various solvents as well microemulsions. A large effect on the fluorescence maxima quantum yields ( φ f ) observed. of excitation wavelength both photoisomerization have been evaluated different media interpreted terms conformational equilibrium. quenching BQxVB by Fe +3 ions also aqueous, anionic cationic micellar solutions. photochemical behaviour halomethane (such CH 2 Cl , CHCl 3 CCl 4 has discussed. solution N,N -dimethyl formamide (DMF) lases around 460 nm upon pumping with a nitrogen laser λ ex = 337.1 nm). Energy transfer from to rhodamine B studied ethanol critical distance determined.
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