The feasibility of the mercaptopropyl acid modified CdTe nanoparticles synthesized in aqueous solution to the labeling of biomoleculespapain via electrostatic interaction was studied in this paper. The absorption spec...The feasibility of the mercaptopropyl acid modified CdTe nanoparticles synthesized in aqueous solution to the labeling of biomoleculespapain via electrostatic interaction was studied in this paper. The absorption spectrum of CdTe papain solution became more flat than that of CdTe nanoparticles in the wavelength range from 400 to 600 nm. While the emission peak of CdTe papain solution underwent a red shift, the intrinsic emission band width was unchanged. The TEM images of monodisperse mercaptopropyl acid stabilized CdTe nanoparticles and CdTe papain solution were compared and the effect of pH of buffer solution was studied. It was proved that the red shift of the emission peak was the result of the electrostatic interaction between CdTe nanoparticles and papain.展开更多
The most important background of white LED is "green lighting source".The color coordinate and color index are very important for lighting source.In this paper,the color coordinate and color index of white l...The most important background of white LED is "green lighting source".The color coordinate and color index are very important for lighting source.In this paper,the color coordinate and color index of white light emitting diode are shown.The average value of color coordinate X,Y are 0.31 and 0.33,respectivily;the maximum value are 0.32,0.35;the minimum value are 0.29,0.29.The average value of color index is 80;the maximum is 83;the minimum is 78.展开更多
People has known that the recognition between cells and bacteria is related to the glycolipid, as a receptor on the cell surface. Diacetylene moiety in the hydrocarbon region can be cross linked by UV irradiation to f...People has known that the recognition between cells and bacteria is related to the glycolipid, as a receptor on the cell surface. Diacetylene moiety in the hydrocarbon region can be cross linked by UV irradiation to form the corresponding polydiacetylene polymer. Color changes of polydiacetylenes have been known to occur in response to a variety of environmental perturbations such as heating, pH, mechanical stress or in the case of biosensor, due to the strong π π * absorption of the conjugation backbone. In this report, polydiacetylene mixed with mannopyranoside monolayer is prepared by Langmuir Blodgett film technology, E.coli K 12 adheres on the monolayer surface after gram strain. The result shows that the mannopyraoside could be recognitized by E.coli, but couldn’t be recognitized by O 111 B 4 and S.flexneri.展开更多
文摘The feasibility of the mercaptopropyl acid modified CdTe nanoparticles synthesized in aqueous solution to the labeling of biomoleculespapain via electrostatic interaction was studied in this paper. The absorption spectrum of CdTe papain solution became more flat than that of CdTe nanoparticles in the wavelength range from 400 to 600 nm. While the emission peak of CdTe papain solution underwent a red shift, the intrinsic emission band width was unchanged. The TEM images of monodisperse mercaptopropyl acid stabilized CdTe nanoparticles and CdTe papain solution were compared and the effect of pH of buffer solution was studied. It was proved that the red shift of the emission peak was the result of the electrostatic interaction between CdTe nanoparticles and papain.
文摘The most important background of white LED is "green lighting source".The color coordinate and color index are very important for lighting source.In this paper,the color coordinate and color index of white light emitting diode are shown.The average value of color coordinate X,Y are 0.31 and 0.33,respectivily;the maximum value are 0.32,0.35;the minimum value are 0.29,0.29.The average value of color index is 80;the maximum is 83;the minimum is 78.
文摘People has known that the recognition between cells and bacteria is related to the glycolipid, as a receptor on the cell surface. Diacetylene moiety in the hydrocarbon region can be cross linked by UV irradiation to form the corresponding polydiacetylene polymer. Color changes of polydiacetylenes have been known to occur in response to a variety of environmental perturbations such as heating, pH, mechanical stress or in the case of biosensor, due to the strong π π * absorption of the conjugation backbone. In this report, polydiacetylene mixed with mannopyranoside monolayer is prepared by Langmuir Blodgett film technology, E.coli K 12 adheres on the monolayer surface after gram strain. The result shows that the mannopyraoside could be recognitized by E.coli, but couldn’t be recognitized by O 111 B 4 and S.flexneri.
