Eu^(3+)掺杂壳聚糖/聚丙烯酸纳米球的制备及其荧光性能  

Synthesis and Fluorescence of Eu-doped Chitosan/Polyacrylic Acid Nanospheres

作　　者：李伟[1] 王玮[1] 张志焜[1] 

机构地区：[1]青岛科技大学纳米材料重点实验室,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2010年第4期339-342,共4页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：青岛市科技发展计划项目(06-2-2-13-jch)

摘　　要：通过丙烯酸单体聚合后交联壳聚糖成功制备了壳聚糖(CS)/聚丙烯酸(PAA)的纳米球,在壳聚糖未交联之前将Eu3+加入到反应液中,然后加入交联剂戊二醛,得到最终产物Eu3+掺杂CS/PAA纳米球。利用场发射扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线能谱仪(EDS)、红外光谱仪(FTIR)和荧光光谱仪(PL)对产物进行表征。荧光性能研究表明,产物中含有Eu3+的特征峰,明显改善了CS/PAA纳米球的荧光性能。鉴于壳聚糖优良的生物相容性,所制备的Eu3+掺杂CS/PAA纳米球在生物标识方面将具有良好的应用前景。Eu-doped chitosan（CS）/polyacrylic acid（PAA） nanospheres were successfully prepared.CS/PAA nanospheres were formed by polymerization of acrylic acid and cross-linking of chitosan.Eu^3＋ was added in the reaction solution before the cross-linking of chitosan,and then the final products were synthesized by adding glutaraldehyde as the crosslinking agent.The products were characterized by SEM,TEM,EDS,FTIR,and PL.Fluorescence studies suggested that the of Eu^3＋ was detected in the product,which greatly improved the fluorescence properties of CS/PAA nanospheres.Combined with the excellent biocompatibility of CS,Eu-doped CS/PAA nanospheres may have potential applications in biolabelling.

关 键 词：壳聚糖 丙烯酸 稀土掺杂 荧光性能 

分 类 号：TB332[一般工业技术—材料科学与工程]