Overcoming the Selectivity-Sensitivity Trade-Off in Electroactive Gas Sensing Using Hybrid Glass Composites

IF 18.5 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Orhan Sisman, Oksana Smirnova, Yang Xia, Nadja Greiner-Mai, Aaron Reupert, Vahid Nozari, Jose J. Velazquez, Dusan Galusek, Alexander Knebel, Lothar Wondraczek
{"title":"Overcoming the Selectivity-Sensitivity Trade-Off in Electroactive Gas Sensing Using Hybrid Glass Composites","authors":"Orhan Sisman,&nbsp;Oksana Smirnova,&nbsp;Yang Xia,&nbsp;Nadja Greiner-Mai,&nbsp;Aaron Reupert,&nbsp;Vahid Nozari,&nbsp;Jose J. Velazquez,&nbsp;Dusan Galusek,&nbsp;Alexander Knebel,&nbsp;Lothar Wondraczek","doi":"10.1002/adfm.202416535","DOIUrl":null,"url":null,"abstract":"<p>Hybrid glasses derived from meltable metal-organic frameworks (MOFs) have emerged as a new class of amorphous materials. Combining the porosity of MOFs with the processing ability of glasses, they are thought to enable a wholly new range of functional compounds. By way of example, it is demonstrated here how the intrinsic porosity of glasses obtained from zeolitic imidazolates (ZIFs) can be used to overcome the selectivity-sensitivity trade-off in electroactive gas sensing. For this, composites are fabricated in which metallophthalocyanines are embedded within a ZIF-62 MOF glass matrix. Such a material enables the detection of gas species (or their absence) utilizing the pronounced electrochemical sensitivity of phthalocyanines. Thereby, the solid glass does not only stabilize and protect the active component, but also – through its retained, highly tunable porosity – ensures sensor selectivity by molecular sieving and targeted size exclusion of larger molecules. In addition, the hydrophobicity of the ZIF pore interior protects the active component from degradation caused by ambient humidity. Investigations of the structural, optical and electronic properties of the composite indicate that compoundation is purely physical, that is, chemical interactions between the compound partners are avoided and the individual properties of the hybrid glass matrix and the electroactive metallophthalocyanine are retained. Atmosphere-controlled high-temperature electrical impedance measurements reveal significant shifts in resistance in CO<sub>2</sub> and Ar atmosphere as compared to airflow. These results provide a proof of concept for sensitive and selective gas sensors based on such composites.</p>","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"35 10","pages":""},"PeriodicalIF":18.5000,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adfm.202416535","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Functional Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adfm.202416535","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

Hybrid glasses derived from meltable metal-organic frameworks (MOFs) have emerged as a new class of amorphous materials. Combining the porosity of MOFs with the processing ability of glasses, they are thought to enable a wholly new range of functional compounds. By way of example, it is demonstrated here how the intrinsic porosity of glasses obtained from zeolitic imidazolates (ZIFs) can be used to overcome the selectivity-sensitivity trade-off in electroactive gas sensing. For this, composites are fabricated in which metallophthalocyanines are embedded within a ZIF-62 MOF glass matrix. Such a material enables the detection of gas species (or their absence) utilizing the pronounced electrochemical sensitivity of phthalocyanines. Thereby, the solid glass does not only stabilize and protect the active component, but also – through its retained, highly tunable porosity – ensures sensor selectivity by molecular sieving and targeted size exclusion of larger molecules. In addition, the hydrophobicity of the ZIF pore interior protects the active component from degradation caused by ambient humidity. Investigations of the structural, optical and electronic properties of the composite indicate that compoundation is purely physical, that is, chemical interactions between the compound partners are avoided and the individual properties of the hybrid glass matrix and the electroactive metallophthalocyanine are retained. Atmosphere-controlled high-temperature electrical impedance measurements reveal significant shifts in resistance in CO2 and Ar atmosphere as compared to airflow. These results provide a proof of concept for sensitive and selective gas sensors based on such composites.

Abstract Image

Abstract Image

利用杂化玻璃复合材料克服电活性气体传感中选择性与灵敏度的权衡
由可熔融金属有机骨架(MOFs)衍生而来的杂化玻璃是一种新型的非晶态材料。将mof的多孔性与玻璃的加工能力相结合,它们被认为可以实现一系列全新的功能化合物。举例来说,本文演示了从沸石咪唑酸盐(ZIFs)中获得的玻璃的固有孔隙度如何用于克服电活性气体传感中选择性和灵敏度的权衡。为此,将金属酞菁嵌入在ZIF-62 MOF玻璃基体中制备复合材料。这种材料能够利用酞菁的明显电化学灵敏度来检测气体种类(或其不存在)。因此,固体玻璃不仅稳定和保护活性成分,而且-通过其保留的,高度可调的孔隙率-通过分子筛选和目标尺寸排除大分子来确保传感器的选择性。此外,ZIF孔内部的疏水性保护活性成分免受环境湿度的降解。对复合材料的结构、光学和电子性质的研究表明,该化合物是纯物理的,即避免了化合物伙伴之间的化学相互作用,保留了杂化玻璃基体和电活性金属酞菁的单独性质。大气控制的高温电阻抗测量显示,与气流相比,CO2和Ar大气中的电阻发生了显著变化。这些结果为基于这种复合材料的敏感和选择性气体传感器的概念提供了证明。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Advanced Functional Materials
Advanced Functional Materials 工程技术-材料科学:综合
CiteScore
29.50
自引率
4.20%
发文量
2086
审稿时长
2.1 months
期刊介绍: Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信