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中文摘要: 采用离子自组装的方法,制备了侧链含有肉桂酸光敏基元和二苯乙烯荧光基元的新型超分子复合物PCAMSTIL。通过核磁共振(NMR)和红外光谱(FT-IR)表征了该超分子复合物的结构,并用热重分析(TGA)、紫外可见光谱(UV-Vis)和荧光光谱(FL)研究了其热稳定性和光学性能。将PCAMSTIL旋涂成膜,薄膜经过266 nm偏振脉冲激光辐照后,肉桂酸发生轴向选择的[2+2]加成,薄膜垂直于激光偏振方向的紫外可见吸收明显大于平行方向的吸收,证实薄膜具有取向性。取向薄膜的最大吸收二向色性取向值最大可达0.103,优于一般肉桂酸材料的取向性,肉桂酸分子的取向也引起二苯乙烯荧光分子的协同取向,荧光偏振发射比可达1.73。
Abstract:Supermolecular complex PCAMSTIL containing photosensitive unit (cinnamate) and fluorescent unit (stilbene) was prepared by ionic self assembly (ISA) method. The structure of the complex was characterized by nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR). The thermal stability and optical property of the complex was studied by thermogravimetric analysis (TGA), ultraviolet visible spectroscopy(UV-Vis) and fluorescence spectium(FL). Irradiated by 266 nm polarized laser caused cinnamate group to undergo axis seletive [2+2] photocycloaddition, resulting in an alignment of cinnamate group perpendicular to the polarization direction leading to dichroism value of 0.103. The laser induced orientation of cinnamate group had a cooperative effect on alignment of the stilbene based fluorescent unit. So the fluorescence emitted by the oriented film was polarized and the ratio of anisotropic fluorescence was 1.73.
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基金项目:国家自然科学基金资助项目(51173103)
作者 | 单位 | |
伊泽源 | 上海交通大学化学化工学院,上海 200240 | leko@sjtu.edu.cn |
吴俊 | 上海交通大学化学化工学院,上海 200241 | |
陆学民 | 上海交通大学化学化工学院,上海 200242 | xueminlu@sjtu.edu.cn |
路庆华 | 上海交通大学化学化工学院,上海 200243 |
引用本文:
伊泽源,吴俊,陆学民,路庆华.离子自组装超分子荧光材料及其光致各向异性特性[J].功能高分子学报,2013,26(1):.
YI Ze yuan,WU Jun,LU Xue min,LU Qing hua.Fluorescent Supermolecular Complex Prepared by Ionic Self Assembly and Its Laser Induced Anisotropic Property[J].Journal of Functional Polymers,2013,26(1):.
伊泽源,吴俊,陆学民,路庆华.离子自组装超分子荧光材料及其光致各向异性特性[J].功能高分子学报,2013,26(1):.
YI Ze yuan,WU Jun,LU Xue min,LU Qing hua.Fluorescent Supermolecular Complex Prepared by Ionic Self Assembly and Its Laser Induced Anisotropic Property[J].Journal of Functional Polymers,2013,26(1):.