八-4-(四氢糠氧基)酞菁铕(Ⅲ)的双酞菁衍生物LB膜特性

Behavior of LB films of Eu(Ⅲ)-octa-4- (tetrahydrofurfuroxy) bisphthalocyanine derivatives

合成了八 - 4 - (四氢糠氧基 )酞菁铕 (Ⅲ ) (A)、八 - 4 - (正壬氧基 )酞菁铽 (Ⅲ ) (B)、双酞菁铽 (C)和八 - 4 -硝基酞菁铽 (D) ,通过元素分析、红外光谱、质谱和紫外 -可见光谱加以确认 .测定了配合物A的π—A曲线 ,表明有很好的成膜性 ,Z型沉积形成的石英LB膜具有很强的荧光响应 ,随着LB膜厚度增加 ,荧光强度增加 .掺杂邻菲咯啉的混合LB膜荧光强度比纯膜强 ,但不是邻菲咯啉加入的量越多发光性越强 .研究结果表明nA∶nphen=1∶10时有最好的荧光行为 .同时研究了A和LB膜对于NH3 ,NOx(x =1,2 )和Cl2 的气敏性 .当A和LB膜分别在NH3 和NOx(x =1,2 )为 5× 10 -5时 ,未观察到响应 .而Cl2 气中 ,在 2× 10 -6的情况下 ,迅速产生了响应 .在低体积分数条件下 (2× 10 -6～ 8×10 -5) ,电导率随着Cl2

Eu(Ⅲ)-octa-4-(tetrahydrofurfuroxy)phthalocyanine(A),Tb(Ⅲ)-octa-4-(n-nonoxy)phthalocyanine(B),Tb(Ⅲ)bisphthalocyanine (C),Tb(Ⅲ)-octa-4-(nitro-)phthalocanine(D)were synthesized and characterized by elementary analysis,IR,MS,UV-vis spectra.The LB film of A was formed by depositing of the quartz with the LB techniques of the Z-type.The luminesecent properties of pure and doped LB films were determined.The results showed that pure films have good luminescent properties,the thicker the better.The films doping o-phenanthroline (abbreviated as phen) made increasing in the relative intensity of fluorescent emission behavior that of pure LB films,but the large amount of phen was not better.Their results showed that n A: n phen =1∶10 has the best fluorescent behavior.Gas-sensing properties of LB films with A for NH 3,NO x(x =1,2)and Cl 2 were investigated.No responses were observed when A LB films were exposed to 5×10 -5 .NH 3 and NO x(x =1,2),respectively.The LB films of A were found to produce a very fast response when exposed Cl 2,even at the 2×10 -6 level.At low-concentration levels(up to 2×10 -6 ～8×10 -5 ),the conductivity changes linearly with the concentrations of Cl 2.