氨基氮杂环荧光分子改性苯乙烯马来酸酐共聚物的研究

荧光高分子材料 ,由于其独特光学性质 ,成为功能高分子研究热点1～ 3 ] .一般而言 ,荧光聚合物的合成有两种方法 ,一是首先合成荧光单体 ,然后与其他适宜单体聚合 ,得到荧光聚合物 ,然而荧光单体结构复杂 ,提纯困难 ,难以获得高分子量、成膜性能好的聚合物4] ;另一种方法是通过官能团的反应 ,用荧光物质对聚合物进行化学改性来制备5,6] .苯乙烯 马来酸酐共聚物 (ＳＭＡ)是一类成本低廉 ,性能良好的商品化聚合物材料 ,主链中含有具有反应性能的酸酐基团 ,这就使通过化学改性制备荧光聚合物成为可能 .本文通过 2 氨基苯并咪唑 ( 1 ) ,4 …

CHEMICAL MODIFICATION OF POLY(STYRENE-co-MALEIC ANHYDRIDE) BY SOME FLUORESCENT ORGANIC MOLECULES

The poly(styrene\| co \|maleic anhydride) )(SMA) was modified by some fluorescent organic molecules such as 2\|amino\|benzimidazol,4\|amino\|antipyrine and 4\|amino\| N \|(2,4\|dimethylphenyl)\|1,8\|naphthalimide to prepare the fluorescent polymers (SMI).The FT\|IR spectra of these polymers show a new carbonyl characteristic peak in imide ring appeared at 1722?cm -1 and no amino group characteristic peaks appeared at 3300～3500?cm -1 .That is to say the chemical modification of SMA is successful.GPC and DSC results of the polymers obtained show that although the molecular weight of these polymers decreased a little in the chemical modification process,the thermal stability of these polymers was improved.On the other hand the fluorescence of these polymers can be quenched by the acidity because of the alkalescence of the organic heteroring containing nitrogen.These novel polymers can emit strong fluorescence and kept the excellent properties of SMA too.This is a convenient method to produce the fluorescent materials.