高性能氧温双传感材料的研究

本文研究了荧光纳米材料与有机染料结合在多传感领域的应用:将荧光纳米材料CdSe/ZnS与有机染料铂(Ⅱ)四(五氟苯基)卟啉包埋于聚氨酯水凝胶D4,经过水解、缩合获得固体薄膜,来实现氧气浓度和温度的同时检测.利用发射峰在524nm的CdSe/ZnS荧光纳米材料提供温度传感,氧气传感则是基于发射峰为650nm的铂(Ⅱ)四(五氟苯基)卟啉的动态猝灭.所制得的薄膜具有良好的光学稳定性,由405nm的紫外光激发,得到两发射峰互不重叠的光谱.实验结果表明,在氧气浓度(0~30%)和温度(15~67℃)下传感膜能很好地应用于氧气和温度双传感系统,且氧气传感的灵敏系数为9.69×10-4,温度传感系数为-0.0035(误差在±0.0002),该技术为新型便携式多传感器提供了可能.

Research on High Performance Materials for Oxygen and Temperature Sensing

The application of luminescent nanomaterials combined with organic dyes in multi-sensing is studied in this paper.The luminescent nanomaterial CdSe/ZnS and the organic dye Pt(Ⅱ)meso-Tetra(pentafluorophenyl)porphine are embedded in polyurethane hydrogel D4,so a solid film is obtained through hydrolysis and condensation to achieve simultaneous detection of oxygen concentration and temperature.Among them,CdSe/ZnS luminescent nanomaterials with an emission peak at 524 nm are used to provide temperature sensing,and oxygen sensing is based on the dynamic quenching of Pt(Ⅱ)meso-Tetra(pentafluorophenyl)porphine with an emission peak at 650 nm.The prepared thin film has good optical stability and is excited by 405 nm violet light to obtain a spectrum in which the two emission peaks do not overlap with each other.The experimental results show that the sensing membrane can be well applied to the oxygen and temperature dual sensing systems.Under the oxygen concentration(0~30%)and temperature(15~67 ℃),the sensitivity coefficient of oxygen sensor is 9.69×10-4 and the sensing coefficient of temperature is-0.003 5(with an error of±0.000 2).This technology provides a possibility for new portable multi-sensors.