氯代挥发性有机物的监测和治理已成为环境污染治理的重点问题之一。为了实现对目标氯代气体进行实时检测，基于光子晶体的光子禁带特性，并结合干涉型传感原理，提出构建无标记光子晶体氯代气体传感器。选用金属有机框架(MOF)与氧化石墨烯(GO)的复合材料(MOF@GO)和介孔TiO2材料作为具有不同折射率的功能性组份单元，率先构筑并研制具备独特的带隙光子特性和高孔隙率的(MOF@GO/TiO2)n一维光子晶体，建立其特征反射峰与光子晶体结构参数间的关系，研究氯代气体分子扩散速率与MOF@GO薄膜的孔隙率、微结构及光子晶体结构之间的关系；系统研究光子晶体的响应机制以及氯代气体驱动与光子带隙变化之间的定性及定量关系，利用扩散速率公式进行理论模拟和计算，优化实验设计；探究氯代气体传感性能与光子晶体结构之间的构效关系，实现对氯代气体样本参数高灵敏度的动态快速检测，由此发展新型无标记光子晶体气体传感器。

The detecting and treatment of chlorinated volatile organic compounds has become one of the key problems in the treatment of environmental pollution. In order to realize the real-time detection of target chlorine gas, based on the photonic band gap characteristics of photonic crystals and the principle of interferometric sensing, we propose an unlabeled photonic crystal chlorinated gas sensor. Metal organic frameworks (MOF) and graphene oxide (GO) composite materials (MOF@GO) and mesoporous TiO2 materials were selected as functional component units with different refractive index to construct and prepare the (MOF@GO/TiO2)n photonic crystal heterostructures with unique band gap photonic properties and high porosity for the first time. The relationship between the characteristic reflection peak and the structure parameters of the photonic crystal is established. The relationship between the molecular diffusion rate of chlorinated gas and the porosity, microstructure and photonic crystal structure of MOF@GO thin films is studied. The response mechanism of the photonic crystal and the qualitative and quantitative relationship between the chlorinated gas drive and the change of the photonic band gap are systematically investigated. The diffusion rate formula is used for theoretical simulation and calculation to optimize the experimental design. The relationship between the performance of the chlorine gas sensing and the structure of the photonic crystal is systematically investigated, so as to realize the dynamic and rapid detection of the high sensitivity of the sample parameters of the chlorinated gas. Therefore, a new label free photonic crystal gas sensor is developed.