两种新型芴衍生物的合成与性能研究  

Synthesis and Properties of Two Novel Fluorene-based Derivatives

作　　者：张松 

机构地区：[1]山西省分析科学研究院,太原030006

出　　处：《太原理工大学学报》2014年第5期581-586,共6页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(81372587)

摘　　要：合成了两种新型芴衍生物：2,7-二（2,4-二氟苯基）-9,9-二辛基芴（1）和2,7-二（4-甲氧基苯基）-9,9-二辛基芴（2）。通过元素分析、红外光谱（IR）以及一维核磁共振氢谱（1 H NMR）、碳谱（13C{1 H}NMR）、氟谱（19F{1 H}NMR）对其结构进行了表征。分析了核磁共振谱谱线特征。利用紫外-可见吸收和荧光光谱研究了化合物1,2的发光性能。结果表明：在CH2Cl2溶液中化合物1,2在300~330nm波段有吸收峰,归属于π-π＊跃迁;化合物1,2的光学带隙Eg分别为3.53eV和3.32eV,发射峰峰值分别为367nm和387nm,并且具有强烈的深蓝色荧光发射（激发波长为320nm）,在二氯甲烷溶液中量子效率分别为0.60和0.80。Two new fluorene derivatives,2,7-bis（2,4-difluorophenyl）-9,9-dioctylfluorene and2,7-bis（4-methoxyphenyl）-9,9-dioctylfluorene were synthesized and characterized by elemental analysis,IR spectra,and NMR spectroscopy.Their optoelectric properties were measured by UVVis absorption spectra and fluorescence spectra.The results show that compound 1and 2have low-energy absorption bands ranging from 300 nm to 330 nm in dichloromethane solution,which can be assigned to theπ-πcharge transfer transitions,with the optical band gap（Eg）3.53 eV and3.32 eV,emission peak 367 nm and 387 nm respectively.The compounds exhibit strong blue photoluminescence under 320 nm excitation wave length at room temperature.The fluorescence quantum yields in CH2Cl2 of compound 1and 2are up to 0.60 and 0.80,respectively.

关 键 词：芴衍生物 合成 核磁共振 光谱性能 

分 类 号：TQ050.422[化学工程]