Author/Authors :
Hong-Lei Tian، نويسنده , , Zhangjun Hu، نويسنده , , Pengfei Shi، نويسنده , , Hongping Zhou، نويسنده , , Jieying Wu، نويسنده , , Yupeng Tian، نويسنده , , Yufang Zhou، نويسنده , , XUTANG TAO، نويسنده , , Minghua Jiang، نويسنده ,
Abstract :
The title compounds, several Schiff bases with D–π–D type have been successfully synthesized from reaction of 4-(N-dialkylamino) benzaldehyde and hydrazine or p-phenylenediamine in ethanol. These compounds were characterized by IR, 1H NMR, elemental analysis and electronspray mass spectrometry. One-photon fluorescence and two-photon fluorescence properties have been investigated. The two-photon absorption (TPA) cross section (σ) of these compounds was obtained by using the open-aperture Z-scan technique. Based on theoretical calculations and factual test, the influence that a series of substituted groups and the conjugated frame imposed on TPA cross section were systematically discussed.
