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用于高性能室温氨传感器的n型β-二基含合聚合物

Weichen Song¹, Jiankun Sun¹, Qian Wang¹

¹State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China. longxj@qdu.edu.cn.

Materials horizons

|December 6, 2023

概括

新的合有机聚合物 (COP) 为有机半导体 (OSC) 气体传感器提供了增强的性能. 这些材料表现出高灵敏度和稳定性,即使在潮湿的条件下,也在推进可穿戴设备技术.

科学领域:

材料科学材料科学材料科学
化学化学化学
传感器技术传感器技术

背景情况:

有机半导体 (OSC) 气体传感器由于机械灵活性而吸引可穿戴设备.
限制包括不良的耐湿性和低导电性,阻碍传感能力.
现有的混合材料通常依赖于金属或碳基.

研究的目的:

开发新的结合有机聚合物 (COP),以提高OSC气体传感器的性能.
研究胺 (Py-COP) 和β-二甲 (BF-COP) 单元的传感机制和结构贡献.
探索有机化学在先进气体传感应用中的潜力.

主要方法:

一系列结合有机聚合物 (COP) 的合成,其中包括pyrimidine或乙二单元.
在室温下测量氨 (NH3) 的气体传感测量.
使用现场里埃变换红外光谱学和理论计算进行了表征.

主要成果:

β-二甲COP (BF-COP) 显示出对40ppmNH3.3的异常感应响应 (>1500).
这种响应是原始COP作为n型传感材料中记录的最高响应.
传感器保持了两个月的性能,并显示了90%的相对湿度抵抗.
在现场光谱和计算确定β-二甲作为一个具有电子缺陷B ← O组作为吸附中心的激活单元.

结论:

与β-二单元结合的有机聚合物为气体分析物提供了丰富的吸收点.
B/N-异环装饰有效调节氧化还原特性,电子相互作用和电荷转移.
这些发现为高效的OSC气体传感器铺平了道路,在有机化学方面具有潜力.

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