灵活性(工程)
共轭体系
材料科学
纳米技术
聚合物
有机半导体
半导体
分析物
机制(生物学)
光电子学
化学
统计
认识论
哲学
物理化学
复合材料
数学
作者
Ruxin Song,Zi Wang,Xu Zhou,Lizhen Huang,Lifeng Chi
标识
DOI:10.1002/cplu.201900277
摘要
Organic π-conjugated materials, which have advantages of tailorable chemical structures, solution processability, and mechanical flexibility, are promising candidates for applications in low-cost, portable gas sensors that operate at room temperature. Nevertheless, there are still challenging issues in the development of organic semiconductor gas sensors because of issues such as relatively poor sensitivity, slow response, and low recovery. Herein, we summarize the recent progress of gas sensors based on organic conjugated materials and discuss the critical factors related to the sensor performance and the operation mechanism. We highlight six types of typical materials from small molecule to polymer semiconductors with respect to their performance in detecting different gas species through morphology control and molecular engineering. Critical factors from gas kinetics to sensor-analyte interaction are briefly discussed, together with an examination of sensing mechanisms.
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