Oliveira Ana Rita, Ramou Efthymia, Palma Susana I C J, Esteves Carina, Barbosa Arménio, Roque Ana Cecília Afonso
Associate Laboratory i4HB - Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal.
Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal.
ACS Mater Au. 2023 Aug 15;3(6):678-686. doi: 10.1021/acsmaterialsau.3c00042. eCollection 2023 Nov 8.
Ionogels and derived materials are assemblies of polymers and ionic liquids characterized by high stability and ionic conductivity, making them interesting choices as gas sensors. In this work, we assessed the effect of the ionic liquid moiety to generate ionogels and hybrid gels as electrical and optical gas sensors. Six ionic liquids consisting of a constant anion (chloride) and distinct cationic head groups were used to generate ionogels and hybrid gels and further tested as gas sensors in customized electronic nose devices. In general, ionogel-based sensors yielded higher classification accuracies of standard volatile organic compounds when compared to hybrid material-based sensors. In addition, the high chemical diversity of ionic liquids is further translated to a high functional diversity in analyte molecular recognition and sensing.
离子凝胶及其衍生材料是聚合物和离子液体的组装体，具有高稳定性和离子导电性，使其成为气体传感器的有趣选择。在这项工作中，我们评估了离子液体部分对生成作为电学和光学气体传感器的离子凝胶和混合凝胶的影响。使用六种由恒定阴离子（氯离子）和不同阳离子头基组成的离子液体来生成离子凝胶和混合凝胶，并在定制的电子鼻设备中作为气体传感器进行进一步测试。一般来说，与基于混合材料的传感器相比，基于离子凝胶的传感器对标准挥发性有机化合物的分类准确率更高。此外，离子液体的高化学多样性进一步转化为分析物分子识别和传感中的高功能多样性。
