双3,5-二叔丁基水杨醛缩邻苯二胺希夫碱的合成及其荧光性质

Synthesis and Fluorescence Properties of Di-3,5-ditert-butylsalicylaldehyde o-phenylenediamine Schiff Base

首先由2,4-二叔丁基苯酚和六亚甲基四胺反应合成3,5-二叔丁基水杨醛,再使其与邻苯二胺反应合成相应的希夫碱,并培养出新的单晶.其晶体数据为:三斜晶系,空间群P1,a=0.99665(6)nm,b=1.19954(7)nm,c=1.74479(10)nm,α=79.800(5)°,β=77.234(5)°,γ=65.489(6)°,V=1.84244(19)nm3,Z=2,Dc=1.107 g/cm3,μ=0.069 mm-1,F(000)=668.0.对其与几种常见金属离子作用时的荧光性质进行了分析.结果表明:该希夫碱与不同的金属离子作用时的荧光强度不同,用波长为323.5 nm的光激发后,在657 nm(λmax)处可发射出较强的荧光,Ca^2+、Ni^2+、Zn^2+、Fe3+、Co^2+、Cu^2+可使荧光强度依次增强.

3,5-ditert-butylsalicylaldehyde was synthesized by the reaction of 2,4-ditert-butylphenol and hexamethylenetetramine.Then the corresponding Schiff base was synthesized by 3,5-ditert-butylsalicylaldehyde reacting with o-phenylenediamine.A new single crystal was developed.The results of X-ray single crystal diffraction show that the compound crystallizes in the triclinic system with space group-P1 and cell parameter:a=0.99665(6)nm,b=1.19954(7)nm,c=1.74479(10)nm,α=79.800(5)°,β=77.234(5)°,γ=65.489(6)°.V=1.84244(19)nm3,Z=2,Dc=1.107 g/cm3,μ=0.069 mm-1,F(000)=668.0.Fluorescent property about the title compound complexed with familiar kinds of metal ions was investigated.The result shows that the corresponding mental complexes exhibited different fluorescence absorption from each other.The fluorescence emission spectrum generated at 657 nm(λmax)when using 323.5 nm as excitation wavelength.Fluorescence intensity in order with different metal ions from weak to strong was Ca^2+、Ni^2+、Zn^2+、Fe3+、Co^2+and Cu^2+.