合成了三种具有硝基/氰基/醚末端官能团的新型芳基苄基醚树枝状硅(IV)酞菁。这些化合物的结构通过元素分析IR 1表征1 H NMR,热重分析和MALDI-TOF质谱数据。通过紫外/可见和荧光光谱法比较了三种树枝状大分子酞菁硅(IV)酞菁的光物理性质,光诱导的分子间电子转移常数和光诱导的分子内能量转移效率。通过循环伏安法(CV)和方波伏安法(SWV)测量研究了这些树枝状硅(IV)酞菁的电化学行为。具有硝基基团的树状大分子硅(IV)酞菁具有最高的光收集能力,荧光量子产率和光诱导的分子内能量转移功效。我们的研究表明,这种新型的树枝状大分子酞菁硅是一种有效的能量传递复合物,具有很高的效率,
Zinc (II) phthalocyanines carrying four poly(aryl benzyl ether) dendritic substituents with terminal cyano and carboxylic acid functionalities were synthesized and characterized using elemental analysis, H-1 NMR, IR, UV vis and matrix-assisted laser-desorption ionization time-of-flight spectra. Phthalocyanines with terminal cyano groups were essentially non-aggregated in common organic solvents whilst the aqueous aggregation tendency of those which contained terminal carboxylic acid groups decreased with increasing size of the dendron. Photoinduced electron transfer in these compounds was investigated using a fluorescence quenching method, employing both neutral and cationic quenchers. Upon excitation of the dendritic subunits in DMSO, the cyano compounds underwent intermolecular energy transfer from the excited dendritic subunits to the phthalocyanine core which acted as an energy trap. (C) 2010 Elsevier Ltd. All rights reserved.