一类供体-受体双嵌段丙烯酸酯聚合物的合成及性能

Synthesis and study of the properties of a donor-acceptor diblock acrylate copolymer

利用原子转移自由基聚合(ATRP)法合成了一种新的供体-受体双嵌段聚合物聚对(二苯胺基)苯乙烯-聚(2-(2-蒽醌甲酰氧基)甲基丙烯酸乙酯(P1-b-P2)。供体段是富电子的三苯胺段,受体段是缺电子的蒽醌段。该双嵌段聚合物的单体结构通过核磁(NMR)加以表征,聚合物通过凝胶渗透色谱(GPC)、差示扫描量热法(DSC)、紫外光谱(UV-vis)、荧光光谱(PL)和循环伏安(CV)法加以表征。GPC和紫外吸收测试表明聚合物数均分子量约为7600,最大吸收波长为305 nm,CV测试计算发现受体段比供体段长,与GPC测试结果一致,表现出更好的受体性能。

A new diblock copolymer P1-b-P2 containing substituted triphenylamine as hole transport moieties and substituted 9,10-anthraquinone as electron transport moieties has been synthesized by atom transfer radical polymerization（ATRP）.The structures of the monomers and the polymer were characterized by nuclear magnetic resonance（NMR） spectroscopy,gel permeation chromatography（GPC） and differential scanning calorimetry（DSC）.The diblock copolymer exhibited a relatively narrow molecular weight distribution with a number-average molecular weight（Mn） of 7600.The photoelectric properties of the diblock copolymer were investigated by UV-vis and fluorescence spectroscopy,and cyclic voltammetry（CV）.The UV-vis spectrum showed a λmax value of 305nm,whilst the CV showed that the donor segment is short,while the acceptor segment is long.Therefore the polymer exhibits predominantly acceptor properties.This is consistent with the GPC results.