| 王亚培,贾晗钰.化学通报,2017,80(2):123-131. |
| 基于共轭聚合物的近红外光传感器 |
| Progress of Near Infrared Sensor Based on Conjugated Polymers |
| 投稿时间：2016-09-13 修订日期：2016-10-13 |
| DOI： |
| 中文关键词: 光热转换 ，共轭聚合物，近红外光，传感器 |
| 英文关键词:Photothermal conversion, Conjugated polymer, Near infrared, Sensor |
| 基金项目:国家自然科学基金项目（51373197, 21422407, 21674127） |
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| 中文摘要: |
| 近红外光传感器在军事警戒、空间勘探、科研检测、医疗诊断等领域有着极为重要的应用价值。传统的近红外光传感材料主要是基于半金属的无机材料，借助窄带隙来吸收低能量的近红外光而改变材料自身的电导率，继而实现检测。无机传感材料由于加工繁琐、不具备柔性、成本高昂以及难降解等因素限制其进一步发展。新兴的共轭聚合物材料通过光热转换，或者能级可调的光电效应实现对近红外光的高灵敏传感，同时能够实现快速响应。该类聚合物材料具有π电子离域的共轭结构，同样具有较窄的带隙，在近红外光照射下能够通过自身电导率的改变或光热转换作用将热量传递至其它超热敏材料实现对光的检测。借助柔性、环境友好、制备简单、便于掺杂、灵敏度高等优势，共轭聚合物材料为新一代近红外光传感器的应用与普及开辟了新的前景。 |
| 英文摘要: |
| Near infrared light sensors have shown great potentials in the fields of military guard, space exploration, scientific detection and medical diagnosis. Conventional NIR sensing materials routinely turn the photon of NIR light into electrical signals based on photoelectric effect, with the help of semimetal-like inorganic materials having narrow bandgap. Though providing high sensitivity, these inorganic materials are meeting a bottleneck in consideration of cumbersome process, non-flexibility, high cost and difficult degradation. Emerging conjugated polymer materials with low bandgap provide an alternative strategy to design novel NIR sensors. These polymer materials possess tunable energy level and are able to respond to NIR light rapidly. The enhanced sensitivity to NIR light is attributed to photothermal conversion or photoelectric effect. Taking advantages of flexibility, eco-friendliness, facile fabrication, doping convenience and high sensitivity, conjugated polymer materials afford great opportunity for developing new generation of NIR sensors with high popularization. |
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