项目名称: 炸药快速检测用纳米胶体阵列的设计与制备
项目编号: No.U1530141
项目类型: 联合基金项目
立项/批准年度: 2016
项目学科: 数理科学和化学
项目作者: 孟子晖
作者单位: 北京理工大学
项目金额: 63万元
中文摘要: 光子晶体(Photonic crystal, PhC)结构色能随外界刺激而改变的特性使其适用于裸眼检测用生化传感器。但具有三维(3D)结构的PhC在实用性上仍有以下问题:1)制备过程复杂,3D反蛋白石结构的制备过程需要1-2周;3)传质慢,即使由胶体小球组装成的单层2D结构,达到吸附平衡的时间仍较长;3)选择性差,常同PhC相结合的非共价型分子印迹聚合物对模板的结构类似物也可识别。针对以上科学问题,我们拟研究具有良好传质性能的空心分子印迹胶体小球的制备技术;并利用其组装成2D-PhC阵列。或向空心球中植入磁核再利用磁场实现快速自组装。我们还拟通过模式识别技术来提高分子印迹PhC的选择性。通过以上研究我们将解决PhC在快速制备、快速响应、及选择性等方面存在的一些技术难点,为制备出实用的炸药快速筛查用裸眼检测传感器奠定基础。
中文关键词: 功能材料;光子晶体;自组装;分子印迹;化学传感器
英文摘要: The structural color of photonic crystal (PhC) will change in response to stimulus, this property makes PhC an optimal sensor for the fast screening by naked-eye. However, traditional 3D-PhC still have problems in practicability: 1) complicated preparation process, preparation of an inverse opal PhC hydrogel might take 1-2 weeks; 2)slow mass transfer even for a 2D-PhC assembled from colloidal; 3) poor selectivity even for a non covalently imprinted PhC. To address the above problems, we will prepare molecularly imprinted hollow colloidal (MIHC), and assemble them into 2D-PhC; or implant a magnetic core inside MIHC and then assemble them under magnetic field. We will improve the selectivity of PhC by model recognition. By above researches we can make a novel molecularly imprinted PhC which can fast screen explosives by naked-eye.
英文关键词: functional material;photonic crystal;self assembly;molecular imprinting;chemical sensors