新型自组装卟啉纳米材料及其光学性质研究  

Self-assembly and optical properties of nano-porphyrin

作　　者：侯长军[1,2] 向芸颉[2] 法焕宝[2] 霍丹群[3] 罗小刚[3] 杨军[3] 侯冰峰[3] 

机构地区：[1]重庆大学生物工程学院生物流变科学与技术教育部重点实验室,重庆400044 [2]重庆大学化学化工学院,重庆400044 [3]重庆大学生物工程学院,重庆400044

出　　处：《功能材料》2009年第9期1425-1428,共4页Journal of Functional Materials

基　　金：国家自然基金资助项目(30770568;30770569);国家高技术研究发展计划(863计划)资助项目(2006AA04Z349);重庆市科委攻关资助项目(2008AB2024;2008AC7037);国家大学生创新基金资助项目(CQUCX-G-2007)

摘　　要：在水/乙醇混合溶液体系中,利用自组装方法,使5-对磺酸基苯基-10,15,20-三苯基卟啉(TPPS1)分子聚集成功能化卟啉纳米材料。利用AFM、SEM、FE-SEM对卟啉纳米材料表面形貌性质及样品处理条件进行了研究:可获得50～70nm不同粒径的卟啉纳米材料;通过控制、调节样品的处理条件,可实现纳米材料尺寸的可控。利用紫外可见光谱和荧光光谱分析自组装卟啉与卟啉单体光学性质的差别:在紫外-可见光谱中,自组装卟啉Soret带吸收峰从原来的412nm分别蓝移和红移到361和451nm,呈现明显的劈裂状,且峰形变宽。以上特征性变化预示了卟啉纳米材料的形成;在荧光光谱中,纳米卟啉的荧光强度以及荧光量子产率分别约为未纳米化TPPS1单体的4和3倍,体现出良好的光敏性能,可作优良的光敏元件及光敏材料。The 5-（4-sulfonatophenyl）-10, 15,20-trisphenylporphyrin （TPPS1） molecule was aggregated to be nano-material in the water/ethanol mixed solution by self assembly approach. The structure and optical properties of the nano-TPPS1 were characterized by atomic force microscopy （AFM）, scanning electron microscopy （SEM） ,field emission scanning electron microscopy （FE-SEM） and fluorescence and UV-visible spectrometer. And the effects of treatment conditions in the process on the properties of the nano-material were studied. The results show that the nano-TPPS1 with different size could be obtained and the average diameter distribution of nano-particles is between 50-70nm. Comparing the UV and fluorescence emission spectras of the monomer with that of the nano-TPPSl ,it is shown that the Soret band at 412nm of monomer was split into a blue-shifted band at 361nm and a red-shifted band at 451nm respectively in the UV spectra. And fluorescence intensity and fluorescence quantum yield of nano-TPPS1 are about 4 and 3 times of TPPS1 monomer respectively in the fluorescence emission spectra. These results should be significant for nano-porphyrin application in marking,analysis, detection and the functional sensing material and device.

关 键 词：卟啉 自组装 纳米材料 表面形貌 光学性 质 

分 类 号：O62[理学—有机化学] TB383[理学—化学]