马来酰胺酸-醋酸乙烯酯交替共聚物的光致发光性能及荧光水凝胶的制备  

The Photoluminescent Properties of Poly(maleamic acid-alt-vinyl acetate)and Construction of Fluorescent Hydrogel

作　　者：郭照琰 高易 茹越[1] 刘振杰[1] 张晓红[1] 乔金樑[1] Zhao-yan Guo;Yi Gao;Yue Ru;Zhen-jie Liu;Xiao-hong Zhang;Jin-liang Qiao(Sinopec(Beijing)Research Institute of Chemical Industry Co.,Ltd.,Beijing 100013)

机构地区：[1]中石化(北京)化工研究院有限公司,北京100013

出　　处：《高分子学报》2024年第9期1155-1164,共10页Acta Polymerica Sinica

摘　　要：马来酸酐-醋酸乙烯酯交替共聚物及其衍生物是一类非共轭光致发光聚合物,在防伪、转光等领域具有很好的应用前景.本研究对自稳定沉淀聚合法制备的马来酸酐-醋酸乙烯酯交替共聚物(PMV)微球进行了酰胺化和酰亚胺化改性,制备出了光致发光的水溶性马来酰胺酸-醋酸乙烯酯交替共聚物PMVN.通过对其光致发光性能的研究,发现其在室温和85℃下溶解的溶液及固体呈现出不同颜色及荧光特征,85℃下溶解的溶液及固体还呈现出蓝、红双发射的特性.在此研究结果基础上,成功制备出荧光水凝胶,所制备的光致发光聚合物和荧光水凝胶在疾病诊断、防伪和环境监测等方面具有很好的应用前景.Poly(maleic anhydride-alt-vinyl acetate)(PMV)have been found as a kind of non-conjugated photoluminescent polymer with strong light emission and unique solvatochromic effect,while its photoluminescence orginated from anhydride cluster interacting in a through-space manner.Besides,PMV could also be converted into highly-emissive or dual-emissive PMV salts through alkalization modification with sodium/lithium hydroxide.Yet in this study,self-precipated polymerized PMV microspheres were modified by amidation and imide to break maleic anhydride rings and prepare water-soluble photoluminescent poly(maleamic acid-alt-vinyl acetate)(PMVN)through simple ammonia treatment.PMVN not only exhibited photoluminescent properties in both solution and solid state,but also showed different colors and fluorescence characteristics when dissolved at different temperatures(room temperature,or 85℃).Microstructure analysis showed that the structures of PMVN-RT and PMVN-85 were basically the same,yet their fluorescence clusters were significantly different,which might be attributed to their different fluorescence characteristics.In addition,the color of PMVN-RT changed to green after heating,while the fluorescence clusters,solution color and fluorescence characteristics of PMVN-85 showed a trend of transforming into PMVN-RT after being placed at room temperature for 72 h.PMVN was a thermochromic photoluminescent polymer with reversible transformation characteristics.Besides,composite fluorescent hydrogels were prepared and exhibited application prospects in many fields such as temperature sensors,biosensors,disease diagnosis,cell imaging,bionic drive and environmental monitoring.

关 键 词：马来酸酐-醋酸乙烯酯交替共聚物 荧光水凝胶 自稳定沉淀聚合 发光团簇 蓝/红双发射 聚 集诱导发光 

分 类 号：TQ427.26[化学工程] TQ317