Synthesis, Characterization and Two-Photon Absorption Properties of a Novel Pyridinium Salt

• 来源期刊: 中国化学（英文版）
• 学科: 化学
• 年，卷（期）: 2004,（4）
• 页码范围: 354-359
• 页数: 6页
• 分类号: O6
• 语种: 英文

摘要

A novel pyridinium salt,2,4-bis[p-(N,N-dimethylamino)styryl]-N-methyl pyridinium iodide(BMSPI)was synthesized and characterized by TG,1H NMR spectroscopy and elemental analysis,and the reaction process was studied by using ES-MS.When BMSPI was pumped by a pulsed 1064 nm,50 ps laser beam,it manifests highly efficient TPA(Two-Photon Absorption)and up-conversion superradiance.The up-conversion efficiency was 6.0% at the pump energy of 4-6 mJ and the lifetime of two-photon fluorescence was measured as 59 ps.