摘要
以9,9′-螺二芴和不同链长的二烷氧基苯为单体,以FeCl3为催化剂,采用化学氧化法合成了一系列聚合物发光材料.溶解度测试表明,共聚物在二氯甲烷、四氢呋喃(THF)、氯仿等极性溶剂中具有良好的溶解性.利用核磁共振氢谱(1HNMR)、傅里叶变换红外(FT-IR)光谱、紫外-可见(UV-Vis)光谱和荧光(PL)光谱研究了共聚物的化学结构和发光性能,结果表明共聚物在二甲基亚砜(DMSO)中均发射蓝色荧光,最大吸收和荧光发射峰分别为356和413nm.以硫酸奎宁溶液作为参比,测得共聚物的荧光量子效率为0.69至0.77.通过循环伏安法(CV)测得所合成的三种共聚物的最高占有分子轨道(HOMO)能级均位于-5.85至-5.69eV之间.
Spirobifluorene (SPF)-based soluble copolymers containing different chain lengths of alkoxy-benzene units in the main chain were synthesized via a chemical oxidative method using FeCl3 as the catalyst.The copolymers are soluble in common organic solvents such as methylene chloride,tetrahydrofuran (THF),and chloroform.The chemical structure and luminescence properties of the as-prepared copolymers were investigated by Fourier transform infrared (FT-IR) spectroscopy,proton nuclear magnetic resonance spectroscopy (1H NMR),ultraviolet-visible (UV-Vis) spectroscopy,and photoluminescence (PL) spectroscopy.With dimethylsulfoxide (DMSO) as solvent,the copolymers emit a strong blue light.The absorption and PL emission peaks appear at 356 and 413 nm,respectively.Using quinine sulfate as the reference,the fluorescence quantum yields of the copolymers were found to be 0.69 and 0.77.Cyclic voltammetry (CV) tests indicated that the highest occupied molecular orbital (HOMO) energy levels of the copolymers are located between-5.85 and-5.69 eV.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2010年第4期993-998,共6页
Acta Physico-Chimica Sinica
基金
教育部新世纪人才计划(NCET-06-0536)
浙江省自然科学基金(Y4090260)
浙江省重大科技专项和优先主题(2009C14004)资助项目~~
关键词
光致发光
共聚物
螺二芴
溶解性
化学氧化法
Photoluminescence
Copolymer
Spirobifluorene
Solubility
Chemical oxidative method
作者简介
马淳安,1974.9-1978.1在北京大学化学系物理化学专业学习.