SYNTHESIS OF 8-HYDROXYQUINOLINE LITHIUM-CONTAINING COPOLYMERS AND THEIR PHOTOLUMINESCENCE BEHAVIOR

DU Naiying; MEI Qunbo; LU Mangeng

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SYNTHESIS OF 8-HYDROXYQUINOLINE LITHIUM-CONTAINING COPOLYMERS AND THEIR PHOTOLUMINESCENCE BEHAVIOR

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF 8-HYDROXYQUINOLINE LITHIUM-CONTAINING COPOLYMERS AND THEIR PHOTOLUMINESCENCE BEHAVIOR
- Acta Polymerica Sinica Issue 4, Pages: 507-512(2005)
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- Published：20 August 2005，
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DU Naiying, MEI Qunbo, LU Mangeng. SYNTHESIS OF 8-HYDROXYQUINOLINE LITHIUM-CONTAINING COPOLYMERS AND THEIR PHOTOLUMINESCENCE BEHAVIOR. [J]. Acta Polymerica Sinica (4):507-512(2005)
DOI：

DU Naiying, MEI Qunbo, LU Mangeng. SYNTHESIS OF 8-HYDROXYQUINOLINE LITHIUM-CONTAINING COPOLYMERS AND THEIR PHOTOLUMINESCENCE BEHAVIOR. [J]. Acta Polymerica Sinica (4):507-512(2005) DOI：

摘要

以LiOH与5(2甲基丙烯酰乙氧基甲基)8羟基喹啉反应合成8羟基喹啉锂(Liq)配合物单体

并与甲基丙烯酸甲酯共聚合成含有高分化的8羟基喹啉锂.1HNMR、TGA、元素分析确定了单体的组成为Li(C9H5NO)CH2OCH2CH2OOCC(CH3)CH2·H2O.与聚甲基丙烯酸甲酯比较

共聚物热稳定性高.Liq含量<15wt%时共聚物能够溶于普通溶剂.紫外吸收、激发光谱、光致(PL)发光谱说明单体和共聚物的发光来自于Liq基团.单体和共聚物发蓝光.同时对共聚物的二甲基甲酰胺、二甲亚砜和四氯乙烷溶液制备的薄膜的光致发光光谱进行了比较

证明溶剂影响Liq基团上共轭电子的离域程度

对发光光谱有调节作用.

Abstract

8-Hydroxyquinoline lithium (Liq)-containing copelymers were synthesized by free radical copolymerization of methyl methacrylate (MMA) and a Liq-pendant monomer prepared by LiOH and 5-(2- methacryloylethyloxymethyl)-8-quinalinol．The structure of the monomer

Li(C9H5NO)CH2OCH2OOCC(CH3)- CH2·H2O

was charactefized and confirmed by 1H-NMR

TGA and elemental analysis．Compared to PMMA

the copolymer was more thermally stable．The copelymers with Liq-content<15 wt％ can he dissolved well in common solvents．Ultraviolet-visible absorption．PL spectra proved that the luminescent centers mostly came from the Liq units．The monomer and the copelymer were blue-emitting matefials．It was found that the solvents．such as DMF．DMSO

which affected the conjugated electrons in quinolinolate groups can he used to modify the color of the lumineseence of the copolymer cast films．

关键词

含有Liq的共聚物自由基聚合光致发光

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Beijing National Laboratory for Molecular Sciences,Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,College of Chemistry and Molecular Engineering,Peking University

北京分子科学国家实验室高分子化学与物理教育部重点实验室北京大学化学与分子工程学院

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