基于Langmuir膜的双重调控仿生矿化界面的构建及其对无机材料的结构调控

项目名称： 基于Langmuir膜的双重调控仿生矿化界面的构建及其对无机材料的结构调控

项目编号： No.21203055

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 物理化学

项目作者： 胡彬彬

作者单位： 河南大学

项目金额： 25万元

中文摘要： 构建新颖的仿生矿化界面体系并研究其对无机晶体结构的调控机制，对发展无机晶体材料仿生合成新技术具有重要意义。本项目通过在传统的Langmuir仿生矿化界面体系中引入气体扩散动力学控制手段，构建Langmuir膜和动力学控制双重调控的仿生矿化界面体系。改变以凝聚态区域Langmuir膜诱导无机晶体生长的惯例，以极低表面压区域的气态Langmuir膜为模板，引入晶核聚集、生长过程中的界面自由度调控，研究Langmuir膜界面环境和动力学控制因素对硝酸钡和硫化铅晶体成核、聚集、生长和组装行为的影响及两者间的协同效应。着重研究界面梯度和界面自由度对材料形貌和结构的调控作用，揭示仿生矿化过程中影响晶体结构选择和形貌变化的根本机制。探索和发展基于Langmuir膜界面性质调控的可控结构仿生矿化制备新技术。

中文关键词： Langmuir膜；双重调控；梯度界面；界面自由度；结构调控

英文摘要： Establishment of novel biomimetic mineralization interface system and study of its mechnism for structure control of inorganic crystals are significant to develope new biomimetic mineralization techniques for preparing inorganic crystals. In this project, a novel biomimetic interface system with dual regulation by both Langmuir monolayers and kinetic control will be constructed through introducing kinetically controlled diffusion of ammonia into a usual Langmuir monolayer biomimetic mineralization interface. The gas phase Langmuir monolayer at the very low surface pressure region will be adopted as a template to replace the one at the condensed phase region of traditional biomimetic mineralization system to direct the growth of inorganic crystals. The regulation of interface freedom is to be introduced into the interface system during the process of nuclei aggregation and crystal growth. The effects of the interface environment of Langmuir monolayers and the kinetic control factors on the nucleation, growth, aggregation and assembly behavior of Ba(NO3)2 and PbS crystals as well as the synergistic effect between Langmuir monolayers and kinetic control will be studied in detail. The effects of gradient- and freedom-regulation of biomimetic mineralization interface on the morphology and structure of inorganic mater

英文关键词： Langmuir monolayers；dual regulation；interface with gradients；interface freedom；structure regulation