CAJ | 학술논문

通过紫外光谱法和荧光光谱法比较,研究了阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)对0~2代以羧基为端基的芳基苄醚树枝配体取代酞菁锌(Ⅱ)配合物(ZnPc(COOH)4、G1-ZnPc(COOH)8和G2-ZnPc (COOH )16)聚集行为的影响。ZnPc (COOH)4、G1-ZnPc(COOH)8和 G2-ZnPc(COOH)16在水溶液中主要以二聚体形式存在。加入 CTAB 后, ZnPc (COOH )4、G1-ZnPc (COOH )8和 G2-ZnPc (COOH)16的单体吸收峰强度均增强,二聚体吸收峰强度均逐渐减弱；荧光光谱均明显增强,这表明 CTAB对树枝酞菁体系具有明显的解聚作用。这是因为 Zn-Pc (COOH )4、G1-ZnPc (COOH )8和 G2-ZnPc (COOH)16表面带负电荷的羧基与带正电荷的 CTAB通过静电作用形成纳米胶束,破坏了羧基酞菁聚集体之间的氢键。通过Zetasize粒度分析仪研究了不同浓度的CTAB与羧基酞菁形成纳米胶束的粒径分布情况,平均粒径范围约在5~30 nm,并随着 CTAB 浓度的增加,纳米胶束的平均粒径增大；随着树枝代数增加,纳米胶束的平均粒径逐渐减小。因此,阳离子表面活性剂CTAB可以有效抑制酞菁在水溶液中的聚集行为,在开展酞菁的光化学和物理研究方面具有很好的应用前景。
통과자외광보법화형광광보법비교,연구료양리자표면활성제십륙완기삼갑기추화안(CTAB)대0~2대이최기위단기적방기변미수지배체취대태정자(Ⅱ)배합물(ZnPc(COOH)4、G1-ZnPc(COOH)8화G2-ZnPc (COOH )16)취집행위적영향。ZnPc (COOH)4、G1-ZnPc(COOH)8화 G2-ZnPc(COOH)16재수용액중주요이이취체형식존재。가입 CTAB 후, ZnPc (COOH )4、G1-ZnPc (COOH )8화 G2-ZnPc (COOH)16적단체흡수봉강도균증강,이취체흡수봉강도균축점감약；형광광보균명현증강,저표명 CTAB대수지태정체계구유명현적해취작용。저시인위 Zn-Pc (COOH )4、G1-ZnPc (COOH )8화 G2-ZnPc (COOH)16표면대부전하적최기여대정전하적 CTAB통과정전작용형성납미효속,파배료최기태정취집체지간적경건。통과Zetasize립도분석의연구료불동농도적CTAB여최기태정형성납미효속적립경분포정황,평균립경범위약재5~30 nm,병수착 CTAB 농도적증가,납미효속적평균립경증대；수착수지대수증가,납미효속적평균립경축점감소。인차,양리자표면활성제CTAB가이유효억제태정재수용액중적취집행위,재개전태정적광화학화물리연구방면구유흔호적응용전경。
The interaction between the phthalocyanine zinc(Ⅱ)bearing poly(aryl benzyl ether)dendritic substit-uents with carboxylic terminal (ZnPc(COOH)4 ,G1-ZnPc(COOH)8 and G2-ZnPc(COOH)16 )and cationic sur-factants(cetyltrimethyl ammonium bromide(CTAB))were studied by fluorescence and UV-Vis spectroscopic methods.ZnPc(COOH)4 ,G1-ZnPc(COOH)8 and G2-ZnPc(COOH)16 mainly existed as a dimer at 625 nm in aqueous media,but they mainly exhibited as monomers at 685 nm with addition of CTAB.As the concentra-tion of CTAB increased,the intensity of the monomeric absorption peak increased,while that of the dimer peaks decreased gradually.Meanwhile,the fluorescence intensity of ZnPc(COOH)4 ,G1-ZnPc(COOH)8 and G2-ZnPc(COOH)16 also markedly enhanced.Therefore,the aggregation behavior of these water-soluble den-dritic phthalocyanines could be disrupted effectively by addition of CTAB.The electrostatic interaction between the positive charges of the CTAB and negative charges of the dendritic phthalocyanine leaded to dis-aggregation of the dendritic phthalocyanine.The nanoparticles were formed by encapsulation of water-soluble dendritic phthalocyanines into the CTAB micelles.The diameters of nanoparticles were studied by Zetasize particle size analyzer.The average sizes of nano-particles were in the range of 5-30 nm.The size of nano-particles increased with the increasing the concentration of CTAB while decreasing with increasing of the dendritic generation. This would provide a useful method for solving the aggregation problem associated with phthalocyanine,and showed potential application in various photophysical and chemical applications.