Please use this identifier to cite or link to this item: https://doi.org/10.1002/anie.201906222
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dc.titleOn-Chip Tailorability of Capacitive Gas Sensors Integrated with Metal-Organic Framework Films
dc.contributor.authorYUAN HONGYE
dc.contributor.authorTao, Jifang
dc.contributor.authorLi, Nanxi
dc.contributor.authorAVISHEK KARMAKAR
dc.contributor.authorTANG CHUNHUA
dc.contributor.authorCai, Hong
dc.contributor.authorPennycook,Stephen John
dc.contributor.authorSingh, Navab
dc.contributor.authorZhao Dan
dc.date.accessioned2020-06-09T09:39:26Z
dc.date.available2020-06-09T09:39:26Z
dc.date.issued2019-07-30
dc.identifier.citationYUAN HONGYE, Tao, Jifang, Li, Nanxi, AVISHEK KARMAKAR, TANG CHUNHUA, Cai, Hong, Pennycook,Stephen John, Singh, Navab, Zhao Dan (2019-07-30). On-Chip Tailorability of Capacitive Gas Sensors Integrated with Metal-Organic Framework Films. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 58 (40) : 14089-14094. ScholarBank@NUS Repository. https://doi.org/10.1002/anie.201906222
dc.identifier.issn1433-7851
dc.identifier.issn1521-3773
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/169567
dc.description.abstract© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Gas sensing technologies for smart cities require miniaturization, cost-effectiveness, low power consumption, and outstanding sensitivity and selectivity. On-chip, tailorable capacitive sensors integrated with metal–organic framework (MOF) films are presented, in which abundant coordinatively unsaturated metal sites are available for gas detection. The in situ growth of homogeneous Mg-MOF-74 films is realized with an appropriate metal-to-ligand ratio. The resultant sensors exhibit selective detection for benzene vapor and carbon dioxide (CO2) at room temperature. Postsynthetic modification of Mg-MOF-74 films with ethylenediamine decreases sensitivity toward benzene but increases selectivity to CO2. The reduced porosity and blocked open metal sites caused by amine coordination account for a deterioration in the sensing performance for benzene (by ca. 60 %). The enhanced sensitivity for CO2 (by ca. 25 %) stems from a tailored amine–CO2 interaction. This study demonstrates the feasibility of tuning gas sensing properties by adjusting MOF–analyte interactions, thereby offering new perspectives for the development of MOF-based sensors.
dc.language.isoen
dc.publisherWILEY-V C H VERLAG GMBH
dc.sourceElements
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectChemistry, Multidisciplinary
dc.subjectChemistry
dc.subjectcapacitive sensors
dc.subjectcoordinatively unsaturated metal sites
dc.subjectin situ film growth
dc.subjectmetal-organic frameworks
dc.subjecton-chip tailorability
dc.subjectCARBON-DIOXIDE
dc.subjectMOF
dc.subjectSEPARATION
dc.subjectMEMBRANE
dc.subjectARRAYS
dc.typeArticle
dc.date.updated2020-06-02T09:27:18Z
dc.contributor.departmentDEPT OF CHEMICAL & BIOMOLECULAR ENGG
dc.contributor.departmentDEPT OF MATERIALS SCIENCE & ENGINEERING
dc.description.doi10.1002/anie.201906222
dc.description.sourcetitleANGEWANDTE CHEMIE-INTERNATIONAL EDITION
dc.description.volume58
dc.description.issue40
dc.description.page14089-14094
dc.published.statePublished
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