Research And Preparation Of RGB Three-color Fluorescent Sensing Materials

As an important element inseparable from life activities,the analysis and detection of oxygen,carbon dioxide and temperature have always been the focus of research in many fields.At present,various sensing schemes have been proposed for the detection of many parameters,such as CO2 and CO2.However,most of them have the problems of tedious detection system,consuming undetermined substances in the detection process,and poor reliability of detection.Optical sensors have the characteristics of multi-parameter measurement,and are widely used in the field of multi-parameter sensing.A stable sensing material is a prerequisite for the preparation of multiparameter fluorescent optical sensors.In this paper,we focus on the detection of CO2 and O2 concentration to prepare fluorescent sensing materials,and apply them to optical sensing devices to achieve simultaneous detection of CO2 and O2.Considering the dependence of the fluorescent sensing material on T,the fluorescent sensing material with three parameters of O2/CO2/T,which can be applied to RGB color sensing system,is further prepared by combining the fluorescent sensing material with T.The specific research process is as follows:(1)For the purpose of preparation of O2/CO2/T three-parameter fluorescent sensing materials,the feasibility of preparation of fluorescent sensing materials based on RGB sensor is analyzed;according to the characteristics of RGB color sensor,appropriate indicators and matrix materials are selected;and according to the different characteristics of the selected indicators,appropriate fixing methods are selected.(2)According to the selected indicator and matrix material,the single-parameter fluorescence sensing material is fixedly prepared by the fixed design method;the spectral characteristics,sensitivity,response degree of the analyte,etc.Analytical materials were analyzed to lay the foundation for the research and preparation of subsequent dual-parameter fluorescence sensing materials.(3)Selecting the common excitation wavelength to be 405 nm;mixing the fluorescent indicators in a certain ratio to prepare a double-parameter fluorescence sensing material;analyzing and comparing the fluorescence sensing characteristics of the dual-parameter fluorescence sensing material;fitting different conditions The SternVolmer fitting curve is used to compare the sensitivity of the dual-parameter fluorescence sensor under different conditions.Finally,the prepared dual-parameter fluorescence sensing material is fixed in the photosensitive area of the RGB color sensor,and the detect and evaluate the effectiveness of the sensing system.(4)Based on the dual-parameter fluorescence sensing,a three-parameter fluorescence sensing material was prepared and fixed directly on the RGB sensing system by coating to verify the applicability and effectiveness of the three-parameter fluorescence sensing material.The results show that the fluorescence sensing materials have good optical stability.