Eight of trans-2-{4-[2-(4-R-Phenyl) ethenyl] phenyl} -5- (4-biphenyl ) oxadiazoles (R=H, i-Pr, t-Bu, Ph, OMe, F, Cl, Br) were synthesized. Their UV, MS, FL spectra,fluorescence quantum yields and laser conversion effi...Eight of trans-2-{4-[2-(4-R-Phenyl) ethenyl] phenyl} -5- (4-biphenyl ) oxadiazoles (R=H, i-Pr, t-Bu, Ph, OMe, F, Cl, Br) were synthesized. Their UV, MS, FL spectra,fluorescence quantum yields and laser conversion efficiencies as well as fluorescence lifetime,laser turning range are given and discussed.展开更多
Formylchrone reacted with aroylhydrazine to give corresponding hydrazone, which was treated with acetic anhydride to give a series of chromones with substitution of 1,3,4 dihydrooxadiazoly in 3 position. The chromone ...Formylchrone reacted with aroylhydrazine to give corresponding hydrazone, which was treated with acetic anhydride to give a series of chromones with substitution of 1,3,4 dihydrooxadiazoly in 3 position. The chromone formation reaction could be finished in a much short time by microwave irradiation heating.展开更多
The crystal of the title compound (C36H29N3O,Mr = 519.62) has been prepared and structurally determined by X-ray single-crystal diffraction. It crystallizes in triclinic P space group with the crystal cell parameters:...The crystal of the title compound (C36H29N3O,Mr = 519.62) has been prepared and structurally determined by X-ray single-crystal diffraction. It crystallizes in triclinic P space group with the crystal cell parameters: a = 12.544(4), b = 14.112(4), c = 17.770(5)? = 96.150(6), = 106.112(5), = 107.156(5)? V = 2825.7(14) 3, Z = 4, Dc = 1.221g/cm3, (MoK? = 0.074 mm-1 , F(000) = 1096,the final R = 0.0747 and wR = 0.1632 for 4713 observed reflections with I >2(I). The E-stereochemistry of the title compound can be confirmed by the result of the X-ray diffraction analysis.展开更多
文摘Eight of trans-2-{4-[2-(4-R-Phenyl) ethenyl] phenyl} -5- (4-biphenyl ) oxadiazoles (R=H, i-Pr, t-Bu, Ph, OMe, F, Cl, Br) were synthesized. Their UV, MS, FL spectra,fluorescence quantum yields and laser conversion efficiencies as well as fluorescence lifetime,laser turning range are given and discussed.
文摘Formylchrone reacted with aroylhydrazine to give corresponding hydrazone, which was treated with acetic anhydride to give a series of chromones with substitution of 1,3,4 dihydrooxadiazoly in 3 position. The chromone formation reaction could be finished in a much short time by microwave irradiation heating.
基金This work was supported by the NNSFC (No. 29832030 and 20072018)
文摘The crystal of the title compound (C36H29N3O,Mr = 519.62) has been prepared and structurally determined by X-ray single-crystal diffraction. It crystallizes in triclinic P space group with the crystal cell parameters: a = 12.544(4), b = 14.112(4), c = 17.770(5)? = 96.150(6), = 106.112(5), = 107.156(5)? V = 2825.7(14) 3, Z = 4, Dc = 1.221g/cm3, (MoK? = 0.074 mm-1 , F(000) = 1096,the final R = 0.0747 and wR = 0.1632 for 4713 observed reflections with I >2(I). The E-stereochemistry of the title compound can be confirmed by the result of the X-ray diffraction analysis.
