Synthesis and photophysical characterization of the free‐radical copolymerization of metaloquinolate‐pendant monomers with methyl methacrylate
Synthesis and photophysical characterization of the free‐radical copolymerization of metaloquinolate‐pendant monomers with methyl methacrylate
复制标题
DOI：
10.1002/pola.20517
复制
发表时间：
2005-01
期刊：
影响因子：
--
通讯作者：
Naiying Du;R. Tian;Junbiao Peng;Mangeng Lu
中科院分区：
文献类型：
--
作者：
Naiying Du;R. Tian;Junbiao Peng;Mangeng Lu
制备了一系列新型的含喹诺酸铝（Alq3）、喹诺酸锌（Znq2）和喹诺酸锂（Liq）的含甲喹诺酸盐共聚物。本文首次报道了用自由基共聚法合成含金属喹啉酸酯的聚合物。采用1H NMR和傅里叶红外技术对邻喹啉酯单体和共聚物的结构进行了表征。差示扫描量热和热重分析结果表明，该共聚物比甲基丙烯酸甲酯均聚物具有更强的热稳定性。共聚物（<25 wt % Alq3, <20 wt % Znq2，或<15 wt % Liq）可以不交联地溶解在普通溶剂中。该共聚物的紫外-可见吸收和光致发光（PL）发射性能与文献中邻喹啉配合物的数据一致。含有25 wt % Alq3, 20 wt % Znq2或15 wt % Liq的金属喹啉酸酯共聚物的发光效率分别为19.89,13.24和11.82%。实验结果表明，这类材料可用于有机发光二极管的实际应用。©2004 Wiley期刊公司[J] .化学工程学报，2009,31 (3):397 - 396
A series of novel metaloquinolate [aluminum quinolate (Alq3), zinc quinolate (Znq2), and lithium quinolate (Liq)]-containing copolymers were prepared. This is the first report of the synthesis of metaloquinolate-containing polymers by free-radical copolymerization. The structures of the metaloquinolate monomers and copolymers were characterized by 1H NMR and Fourier transform infrared techniques. The differential scanning calorimetry and thermogravimetric analysis results showed that the copolymers were more thermally stable than the methyl methacrylate homopolymer. The copolymers (<25 wt % Alq3, <20 wt % Znq2, or <15 wt % Liq) could be dissolved in common solvents without crosslinking. The ultraviolet–visible absorption and photoluminescence (PL) emission properties of the copolymers were consistent with the literature data of metaloquinolate complexes. The PL efficiencies of the metaloquinolate-containing copolymers with 25 wt % Alq3, 20 wt % Znq2, or 15 wt % Liq were 19.89, 13.24, and 11.82%, respectively. The experimental results indicated that these kinds of materials could be used for practical applications in organic light-emitting diodes. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 397–406, 2005