Zhang Yuxuan, Chen Shanyong
College of Chemistry, Liaoning University Shenyang 110036 China.
Research Institute for New Materials Technology, Chongqing University of Arts and Sciences Yongchuan 402160 China.
RSC Adv. 2018 Nov 6;8(65):37348-37355. doi: 10.1039/c8ra07547f. eCollection 2018 Nov 1.
In this paper, two novel azobenzene-containing poly(aryl ether)s with different absorption wavelengths were synthesized Ullmann coupling and Sonogashira coupling, respectively. The obtained polymers were characterized and evaluated by elemental analysis, IR, H NMR, UV-vis, DSC and TGA. Rare earth complexes were prepared by using the two novel azobenzene-containing poly(aryl ether)s as macromolecular ligands. The obtained rare earth complexes were characterized by elemental analysis, IR and WAXD. The influence of the absorption wavelength of azobenzene chromophores on the fluorescent properties was investigated. The polymer whose absorption wavelength was far from the excitation wavelengths of the rare earth complexes showed a much larger fluorescence intensity. By exposing the films of the rare earth complexes to two interference laser beams, SRGs can be formed on the films and can also be detected by fluorescence microscopy measurement.
本文分别通过乌尔曼偶联反应和Sonogashira偶联反应合成了两种具有不同吸收波长的新型含偶氮苯聚芳醚。通过元素分析、红外光谱（IR）、核磁共振氢谱（H NMR）、紫外可见光谱（UV-vis）、差示扫描量热法（DSC）和热重分析法（TGA）对所得聚合物进行了表征和评估。以这两种新型含偶氮苯聚芳醚为大分子配体制备了稀土配合物。通过元素分析、红外光谱和广角X射线衍射（WAXD）对所得稀土配合物进行了表征。研究了偶氮苯发色团的吸收波长对荧光性能的影响。吸收波长远离稀土配合物激发波长的聚合物表现出大得多的荧光强度。通过将稀土配合物薄膜暴露于两束干涉激光束下，可在薄膜上形成表面浮雕光栅（SRG），并且也可以通过荧光显微镜测量进行检测。
