SYNTHESIS AND CHARACTERIZATION OF POLYMERS BEARING AZOBENZENE AND CARBAZOLE GROUPS VIA POST-AZO-COUP

来源 :高分子科学(英文版) | 被引量 : 0次 | 上传用户:Tsianyong
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A series of polymers bearing azobenzene and carbazole groups for photorefractive purpose were prepared via post-azo-coupling reaction. The successful reaction was identified by spectroscopic analysis and gel permeation chromatography. This approach is more facile compared with the direct polymerization of corresponding functional monomer. The polymers prepared have weight average molecular weight of higher than 1.5 × 104 and are easily soluble in common organic solvents like chloroform and tetrahydrofuran, polymer films with high optical quality could be easily fabricated through solution casting. Glass transition temperature (Tg) of the polymers ranges from 60℃ to 182℃, depending on the alkylene spacer length between the functional side group and the polymer backbone, and the polymers are relatively stable under 300℃.
其他文献
The authors present a semi-definite relaxation algorithm for the scheduling problem with controllable times on a single machine. Their approach shows how to rel
用化学气相输运(CVT)方法合成了直径在20~120 nm呈单晶结构的ZnO纳米线.利用场发射扫描电镜(FESEM)、高分辨透射电镜(HRTEM)以及选区电子衍射(SAED)等技术对ZnO纳米线的生长机
The 10%Ni/Al2Os catalyst for partial oxidation of methane was treated by DBD (dielectric barrier discharge) plasma in a continuous system under atmospheric pres
The inclusion complexes of α-cyclodextrin(α-CD) and FcCO2(CH2)18 (FcSH) and their self-assembled monolayers(SAMs) on gold surface were investigated by electro
Three reactions involved in dimethyl ether (DME) synthesis from CO hydrogenation: methanol synthesis reaction (MSR), methanol dehydration reaction (MDR) and wat
A kind of luminous bacterial sensors that can quickly detect the acute toxicity of environmental pollutants were developed. The method is based on the detection
Microporous polyvinylidene fluoride (PVDF) hollow fibre membranes were spun using the dry-wet phase inversion method. By means of dip-coating technique, a unifo
A theory of nonfluidized gas-solids flow, which combines the theory of multiphase flow with the mechanics of particulate media, was proposed on the basis of und
Nanosized tin dioxide particles were prepared by sol-gel dialytic processes with tin(Ⅳ) chloride and alcohol as start materials. The nanoparticles of tin dioxi