超疏水聚合物/贵金属纳米纤维的制备及其应用
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- 英文论文题名：Superhydrophobic Polymer/Noble Metal Nanofibers for Low-Concentration Detection
- 论文作者：梁晓红 ; 章瀚 ; 程丝
- 英文论文作者：Xiaohong Liang ; Han Zhang ; Si Cheng ; College of Chemistry ; Chemical Engineering and Materials Science ; Soochow University
- 年：2016
- 作者机构：苏州大学材料与化学化工学部;
- 论文关键词：表面增强拉曼 ; 超疏水 ; 静电纺丝 ; 纳米纤维 ; 低浓度痕量检测
- 会议召开时间：2016-11-18
- 会议录名称：中国第四届静电纺丝大会（CICE 2016）摘要集
- 语种：中文
- 分类号：X832;TQ340.64
- 学会代码：ZGNM
- 会议名称：中国第四届静电纺丝大会(CICE 2016)
- 会议地点：中国北京
- 主办单位：中国复合材料学会超细纤维材料分会（筹）
- 学会名称：中关村科创纳米技术创新研究会
- 页数：1
- 文件大小：1789k
- 原文格式：D
- 会议级别：全国
摘要
低浓度痕量检测一直是传感检测领域的目标之一,利用贵金属纳米粒子特异的表面等离共振效应与拉曼光谱相结合,将被检测分子置于贵金属纳米粒子的电场热区(hot-spot),表面增强拉曼散射技术能大幅度提高低浓度待测分子的检测灵敏度。近年来,超疏水一浓缩检测是针对低浓度检测的一种新方法。[1,2]由于基底材料的超疏水性,被检测液体在基底表面呈液滴状,不扩散不坍塌。随着液体的挥发,被检测分子浓缩在一个非常小的等离子体热区之内,分子的拉曼信号得到大幅度的增强。[1]本文利用贵金属纳米粒子的表面等离激元增强效应与聚合物纳米纤维的超疏水性,采用静电纺丝技术和表面层层自组装的方法制备了负载贵金属纳米粒子的聚合物纳米纤维。这种聚合物/贵金属杂化纳米纤维具有超疏水性能,可以实现对被检测物质的浓缩,同时纳米纤维表面的贵金属纳米粒子赋予材料表面增强拉曼活性,利用此法实现对水相污染物的低浓度检测。
The detection of molecules in highly diluted solution with low concentration is still highly desired to date.Here we reported a general approach for preparing superhydrophobic polymer nanofibers decorated with gold nanoparticles for improved detection sensitivity through electrospinning and layer-by-layer self-assembly.Superhydrophobicity of polymer nanofibers could drive and concentrated molecules over the sensing micro-area where plasmonic electric-field hot spots are used to carry out molecule detection.The limit of detection for R6 G molecules was as low as 10~(-13)M.
The detection of molecules in highly diluted solution with low concentration is still highly desired to date.Here we reported a general approach for preparing superhydrophobic polymer nanofibers decorated with gold nanoparticles for improved detection sensitivity through electrospinning and layer-by-layer self-assembly.Superhydrophobicity of polymer nanofibers could drive and concentrated molecules over the sensing micro-area where plasmonic electric-field hot spots are used to carry out molecule detection.The limit of detection for R6 G molecules was as low as 10~(-13)M.
引文
[1]De Angelis,F.;GentileF;MecariniF;et al.E.Nat Photon.2011,5:682.
[2]Lee,H.K.;Lee,Y.H.;Zhang,Q.;et al.X.Y.ACS Appl.Mater.Interf.2013,5:11409.
[2]Lee,H.K.;Lee,Y.H.;Zhang,Q.;et al.X.Y.ACS Appl.Mater.Interf.2013,5:11409.