Trans-4-(Dimethylamino)-4′-(diethylamino) stilbene(DMAEAS) has been synthesized and characterized by 1H NMR, IR and elemental analysis. The UV spectrum of the compound has been recorded. The single photon fluorescenc...Trans-4-(Dimethylamino)-4′-(diethylamino) stilbene(DMAEAS) has been synthesized and characterized by 1H NMR, IR and elemental analysis. The UV spectrum of the compound has been recorded. The single photon fluorescence spectrum of the compound under 370 nm excitation shows the presence of two bands at 420 nm and 438 nm, respectively.展开更多
A novel two photon photoninitiated polymerization is reported. The results of the study show that the two photon polymerization of TMPTMA can be initiated by means of 4,4 bis(di n butylamino) E stiebene(BDBAS) under...A novel two photon photoninitiated polymerization is reported. The results of the study show that the two photon polymerization of TMPTMA can be initiated by means of 4,4 bis(di n butylamino) E stiebene(BDBAS) under 600 nm strong laser. The light source that we used for the two photon polymerization is a YAG pumped dye laser whose oscillating wavelength repetition rate and single pulse energy are 600 nm, 10 ns and 15 mJ, respectively. The peak power density of radiation light tight focused by means of bojective lens is 3.8 GW/cm 2. The relative mechanism of the polymerization is discussed. [WT5HZ]展开更多
Trans 4 (N,N ′ dimethyl amino) 4′ ( N,N′ diethyl amino) stilbene (DMAEAS) has been synthesized and characterized by 1H NMR spectra, IR spectra, and elemental analyses. Its linear absorption, single ...Trans 4 (N,N ′ dimethyl amino) 4′ ( N,N′ diethyl amino) stilbene (DMAEAS) has been synthesized and characterized by 1H NMR spectra, IR spectra, and elemental analyses. Its linear absorption, single photon induced fluorescence and two photon induced fluorescence are experimentally studied. This new dye has a great two photon absorption (TPA) cross section of σ 2=1 16×10 -46 cm 4·s/photon at 532 nm by using an open aperture Z scan system. When pumped with 800 nm laser irradiation, DMAEAS shows a strong two photon induced blue fluorescence of 440 nm.展开更多
Trans 4 ( N,N ′ dimethyl amino) 4′ ( N 2 hydroxyethyl N ′ ethyl amino)stilbene (DMAHAS) has been synthesized and characterized by 1H NMR spectra, IR spectra and elemental analysis. Line...Trans 4 ( N,N ′ dimethyl amino) 4′ ( N 2 hydroxyethyl N ′ ethyl amino)stilbene (DMAHAS) has been synthesized and characterized by 1H NMR spectra, IR spectra and elemental analysis. Linear absorption, single photon induced fluorescence and two photon induced fluorescence were experimentally studied. This new dye has a moderate two photon absorption cross section of σ 2=0.91×10 -46 cm 4·s/photon at 532 nm by using an open aperture Z scan technique. The result indicates that DMAHAS shows a strong two photon induced blue fluorescence of 432 nm when pumped with 800 nm laser irradiation.展开更多
文摘Trans-4-(Dimethylamino)-4′-(diethylamino) stilbene(DMAEAS) has been synthesized and characterized by 1H NMR, IR and elemental analysis. The UV spectrum of the compound has been recorded. The single photon fluorescence spectrum of the compound under 370 nm excitation shows the presence of two bands at 420 nm and 438 nm, respectively.
文摘A novel two photon photoninitiated polymerization is reported. The results of the study show that the two photon polymerization of TMPTMA can be initiated by means of 4,4 bis(di n butylamino) E stiebene(BDBAS) under 600 nm strong laser. The light source that we used for the two photon polymerization is a YAG pumped dye laser whose oscillating wavelength repetition rate and single pulse energy are 600 nm, 10 ns and 15 mJ, respectively. The peak power density of radiation light tight focused by means of bojective lens is 3.8 GW/cm 2. The relative mechanism of the polymerization is discussed. [WT5HZ]
基金ProjectsupportedbytheMajorStateBasicResearchDevelopmentProgram (No .G19980 614 0 2 )andtheNationalNaturalScienceFoundationofChina (No .5 0 173 0 15 ) .
文摘Trans 4 (N,N ′ dimethyl amino) 4′ ( N,N′ diethyl amino) stilbene (DMAEAS) has been synthesized and characterized by 1H NMR spectra, IR spectra, and elemental analyses. Its linear absorption, single photon induced fluorescence and two photon induced fluorescence are experimentally studied. This new dye has a great two photon absorption (TPA) cross section of σ 2=1 16×10 -46 cm 4·s/photon at 532 nm by using an open aperture Z scan system. When pumped with 800 nm laser irradiation, DMAEAS shows a strong two photon induced blue fluorescence of 440 nm.
基金ProjectsupportedbytheMajorStateBasicResearchDevelopmentProgram (No .G19980 614 0 2 )
文摘Trans 4 ( N,N ′ dimethyl amino) 4′ ( N 2 hydroxyethyl N ′ ethyl amino)stilbene (DMAHAS) has been synthesized and characterized by 1H NMR spectra, IR spectra and elemental analysis. Linear absorption, single photon induced fluorescence and two photon induced fluorescence were experimentally studied. This new dye has a moderate two photon absorption cross section of σ 2=0.91×10 -46 cm 4·s/photon at 532 nm by using an open aperture Z scan technique. The result indicates that DMAHAS shows a strong two photon induced blue fluorescence of 432 nm when pumped with 800 nm laser irradiation.