香豆素型荧光聚合物的合成及光学性能  

Preparation and Optical Properties of Coumarin Fluorescent Polymer

作　　者：王鹏[1] 张光华[1] 相瑞[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《发光学报》2013年第10期1313-1318,共6页Chinese Journal of Luminescence

基　　金：陕西省自然科学基金(2009JM2010);传化集团绿色轻化工助剂研发中心基金(20124932)资助项目

摘　　要：以对甲苯磺酸为催化剂,通过Pechmann法使间苯二酚和乙酰乙酸乙酯发生脱水缩合反应,合成了7-羟基-4-甲基香豆素,再以三聚氯氰为交联单体,将7-羟基-4-甲基香豆素和紫外线吸收剂2,4-二羟基-二苯甲酮引入同一分子中,并使其与丙烯酰胺按一定比例聚合,得到一种能溶于水的荧光聚合物。通过红外光谱和核磁氢谱对产物进行结构表征,运用紫外光谱、荧光光谱测试其光学特性,并考察其在纸张上的应用效果。结果表明:荧光聚合物的Stokes位移(3 121.2 cm-1)比单体(5 221.5 cm-1)小,空间位置变化小,损失能量低,说明其结构更稳定,光稳定性更好,应用于纸张的抗紫外光老化效果也更优。Employing toluene-p-sulfonic acid as the activator,7-hydroxy-4-methyl coumarin was synthesized by dehydration condensation reaction of resorcinol and ethyl acetoacetate through the Pechmann method. Cyanuric chloride was used as the crosslinking monomer,a water-soluble fluorescent polymer was prepared through joining the 7-hydroxy-4-methyl coumarin,ultraviolet absorber 2,4-dihydroxy-benzophenone and a certain percentage of acrylamide. The molecular structures were characterized by IR spectra and1H NMR,and the optical properties were measured by UV spectra and fluorescence spectra. The application effect of the polymer in paper sheet was tested. The results show that the Stokes shift of polymer( 3 121. 2 cm-1) is less than monomer( 5 221. 5 cm-1),the polymer steric resistance change is smaller,and the energy loss is less. These indicate that the polymer owns a more stable structure,a better light stability,and a better effect in UV ageing resistance on paper sheet than fluorescent monomer.

关 键 词：7-羟基-4-甲基香豆素 荧光聚合物 光学性能 

分 类 号：O482.31[理学—固体物理]