第18卷第1期 2010年1月
文章编号
1004-924X(2010)01-0083-05
光学精密工程
Optics and Precision Engineering
溶胶-凝胶薄膜修饰的微结构聚合物
光纤氟离子传感探头
杨兴华1.3，彭利荣1，滕平平2，苑立波，王丽莉3
Vol.18No,1 Jan.2010
（1.哈尔滨工程大学理学院，黑龙江哈尔滨150001；2.哈尔滨北方特种车辆研究院，黑龙江哈尔滨150056
3.中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室，陕西西安710119）摘要：通过对微结构聚合物光纤修饰柔色索-铝配合物掺杂的凝胶薄膜，制备了一种氟化物光纤传感探头。这种探头的结构基于微结构聚合物光纤实现，其内部具有贯穿的微孔道结构，这种微孔道结构可以作为敏感材料的载体以及微传感池。敏感层的修饰通过溶胶-凝胶过程实现，将掺有桑色素-铝的溶胶直接吸人光纤内部，可以在光纤微孔阵列中形成凝胶敏感膜。微结构光纤内部可以容纳微量液体，传感过程在微孔道内进行。基于荧光淬灭原理实现传感，氟离子对凝胶膜中桑色素-铝具有强烈的荧光淳灭作用，因此，传感探头对于不同浓度的氟离子落液表现不同的荧光强度。在pH值
为4.6的条件下，探头对于氟离子具有良好的响应，可在5～50mmol/L内传感。关键词：徽结构聚合物光纤；溶胶-凝胶法；光学传感：氯化物传感
中图分类号：TN253
文献标识码：A
Fluoridesensitiveopticalprobeof microstructuredpolymeroptical
fibermodifiedwithsol-gelthinfilm
YANG Xing-hua'-3,PENG Li-rong', TENG Ping-ping’,YUAN Li-bo', WANG Li-li(1.Collegeof Science,HarbinEngineeringUniversity,Harbin150001,China; 2.Instituteof Harbin North Spetial VehicleResearch,Harbin150056,China;
3.StateKeyLaboratoryofTransientOpticsandPhotonics,Xi'anInstituteof Optics and
Precision Mechanics,ChineseAcademy of Sciences,Xi'an710119,China)
Abstract: An optical fluoride probe was fabricated based on Microstructured Polymer Optical Fibers(MPOFs) modified by morin-Al complex doped silica gel films. The structure of this probe was based on microstructured polymer optical fibers with microholes and these microholes could be used as the substrate of sensing materials and minor reaction pools, The deposition of sensing layer was realized by a sol-gel process. When the sol doped with morin-Al was inhaled into the optical fiber, the sensing layer was formed on the inner wall. Furthermore,the trace liquid could be hold in the MPOF, and the process of sensing were carried out in the microholes of MPOF. The sensing process was undertaken based on fluorescence process, and the sensing probe shows different fluorescence intensities to differ-ent fluoride ion concentrations in the aqueous solution,for the fluoride ion has a stronger queeching
收稿日期：2009-04-30；修订日期：2009-06-15.
基金项目：国家自然科学基金资助项目（No.2007AA032452)；哈尔滨工程大学基础研究基金资助项目（No
002110260748)