含8-羟基喹啉侧基聚酯及其锌、铝配合物的合成和性能

doi:10.11944/j.issn.1000-0518.2017.03.160304

摘要/Abstract

摘要：

合成了2种新型含8-羟基喹啉侧基聚酯(P5,P6),进一步与无水醋酸锌和六水氯化铝反应,得到4种聚酯锌、铝配合物(P5-Zn,P6-Zn,P5-Al,P6-Al)。采用元素分析仪、傅里叶变换红外光谱仪、紫外可见光谱仪、核磁共振氢谱仪、凝胶渗透色谱仪、热重分析仪和荧光光谱仪等技术手段对其结构和性能进行了表征。聚酯P5和P6易溶于四氢呋喃(THF)、N,N-二甲基甲酰胺(DMF)、N,N-二甲基乙酰胺(DMAC)、二甲基亚砜(DMSO)和N-甲基吡咯烷酮(NMP)等常用的有机溶剂,配合物P5-Zn、P6-Zn、P5-Al和P6-Al部分溶于DMF、DMAC、DMSO和NMP等溶剂。聚酯P5和P6的质均相对分子质量M_w为4.11×10⁴和5.42×10⁴,相对分子质量分布指数PDI为1.50和1.40。聚酯P5和P6的5%失重温度分别为261.4和291.1 ℃,配合物P5-Zn、P6-Zn、P5-Al和P6-Al的5%失重温度分别为307.7、306.2、286.3和297.8 ℃。聚酯P5和P6的DMF溶液(5×10^-5 mol/L)在432和429 nm处发射较弱紫色荧光,配合物P5-Zn、P6-Zn、P5-Al和P6-Al的DMF溶液(5×10^-5 mol/L)分别在540、537、517和522 nm处发强绿色荧光,固体分别在550、556、531和535 nm处发射强绿色荧光。

关键词: 8-羟基喹啉, 聚酯, 锌配合物, 铝配合物

Abstract:

Two kinds of novel polyesters containing 8-hydroxyquinoline side groups(P5, P6) were synthesized by multistep reactions. Subsequently, polyesters P5 and P6 reacted with zinc acetate and aluminum chloride to get zinc complexes(P5-Zn, P6-Zn) and aluminum complexes(P5-Al, P6-Al). The structures and properties of polyesters and metal complexes were characterized by elemental analysis, IR, UV-Vis, ¹H NMR, GPC, TG and fluorescence spectroscopy. Polyesters P5 and P6 can be easily dissolved in many solvents such as tetrahydrofurane(THF), N,N-dimethyl formamide(DMF), N,N-dimethyl acetamide(DMAC), dimethylsulfoxide(DMSO), and N-methyl pyrrolidone(NMP) at room temperature. Complexes P5-Zn, P6-Zn, P5-Al and P6-Al can be partially dissolved in DMF, DMAc, DMSO and NMP. The mass mean relative molecular mass(M_w) and polydispersity index(PDI) of P5 and P6 are 41200, 54200 and 1.50, 1.40, respectively. The 5% mass loss temperatures of P5, P6, P5-Zn, P6-Zn, P5-Al and P6-Al are 261.4, 291.1, 307.7, 306.2, 286.3 and 297.8 ℃, respectively. Fluorescence emission peaks of P5 and P6 in DMF solution appear at 432 and 429 nm, emitting weak purple light. Fluorescence emission peaks of P5-Zn, P6-Zn, P5-Al and P6-Al in solid state emerge at 550, 556, 531, 535 nm, emitting strong green light, which are all red-shifted to some extent, compared with their emission peaks in DMF solution located at 540, 537, 517 and 522 nm.

Key words: 8-hydroxyquinoline, polyester, zinc complex, aluminum complex

吴岩, 郭照南, 吕成伟, 于世钧. 含8-羟基喹啉侧基聚酯及其锌、铝配合物的合成和性能[J]. 应用化学, 2017, 34(3): 338-344.

WU Yan, GUO Zhaonan, LYU Chengwei, YU Shijun. Synthesis and Properties of Polyesters Containing 8-Hydroxyquinoline Side Groups and Their Zn(Ⅱ), Al(Ⅲ) Complexes[J]. Chinese Journal of Applied Chemistry, 2017, 34(3): 338-344.

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