Yunxing Yan
May 1, 2003
Citations
0
Influential Citations
8
Citations
Journal
Journal of Solid State Chemistry
Abstract
Abstract Three new chromophores and trans -4-( N -(ethyl 4″-nitrobenzoate)- N -ethyl amino)-4′-(dimethyl amino) stilbene (DMANHAS) have been synthesized and whose chemical structures have been characterized by 1 H NMR, IR, and elemental analyses. Linear absorption, single-photon-induced fluorescence and two-photon-induced fluorescence are experimentally studied. Trans -4-( N -2-hydroxyethyl- N -ethyl amino)-4′-(dimethyl amino)stilbene (DMAHAS) and trans -4-( N -2-hydroxyethyl- N -ethyl amino)-4′-(diethyl amino)stilbene (DEAHAS) have effective two-photon absorption cross-sections of σ 2 =0.91×10 −46 cm 4 s/photon and σ 2 =1.19×10 −46 cm 4 s/photon at 532 nm by using an open aperture Z-scan technique, respectively. When pumped with 800 nm laser irradiation, DMAHAS and DEAHAS indicate strong two-photon-induced blue fluorescence of 436 and 440 nm, respectively, while trans -4-( N -(ethyl 4″-nitrobenzoate)- N -ethyl amino)-4′-(diethyl amino) stilbene (DEANHAS) and DMANHAS exhibit no fluorescence.