铁离子检测用自组装膜的光谱特性分析  

Spectral Properties Analysis of Self-assembled Film for Ferrous Ions Detection

作　　者：程文华[1,2] 张姗姗[1,2] 郭为民[1] 于良民[2] 

机构地区：[1]中国船舶重工集团公司第七二五研究所青岛分部,海洋腐蚀与防护重点实验室,山东青岛266101 [2]中国海洋大学化学化工学院,山东青岛266100

出　　处：《材料开发与应用》2014年第6期78-83,共6页Development and Application of Materials

基　　金：重点实验室基金(9140C250102110C2503)

摘　　要：以聚二烯丙基二甲基氯化铵(PDDA)和聚4-苯乙烯基磺酸钠(PSS)为前驱体,以1-亚硝基-2-萘酚-3,6-二磺酸二钠一水合物为铁离子指示剂,根据静电自组装原理,设计制备了对铁离子具有光学敏感性的自组装膜。采用紫外可见分光光度计考察了敏感膜的自组装制备过程,分析了不同指示剂含量的敏感膜与铁离子作用前后的光谱变化规律,并通过扫描探针显微镜对其微观形貌进行了观察,通过敏感膜与铁离子作用前后的特征峰分析,初步确定了敏感膜吸光度变化量与铁离子浓度间的对应关系。Poly diallyl dimethyl ammonium chloride（ PDDA） and poly（ sodium 4-styrenesulfonate）（ PSS） were used as precursor,and disodium 1-nitroso-2-naphthol-3,6- disulfonate monohydrate as ferrous ions indicator. A self-assembly film with optical sensitivity to ferrous ions was designed and prepared according to the electrostatic self-assembly principle. The self-assembly process of sensitive film were investigated with UV visible spectrophotometer,and the spectral changes of sensitive film with different content of indicator before and after reaction with ferrous ions was analyzed. The surface topography was observed by Atomic Force Microscopy（ AFM）.By analyzing the characteristic peaks of sensitive film before and after reaction with ferrous ions,the corresponding relationship between the absorbance changes of sensitive film and concentration of ferrous ions was determined tentatively.

关 键 词：敏感膜 铁离子 静电自组装 1-亚硝基-2-萘酚-3 6-二磺酸二钠一水合物 

分 类 号：O433.4[机械工程—光学工程]