A comparative study of honeycomb-like 2D π-conjugated metal–organic framework chemiresistors: conductivity and channels

Yao, Ming‐Shui; Wang, Ping; Gu, Yifan; Koganezawa, Tomoyuki; Ashitani, Hirotaka; Kubota, Yoshiki; Wang, Zaoming; Fan, Zeyu; Otake, Ken‐ichi

doi:10.1039/d1dt02323c

Cited by 20 publications

(28 citation statements)

References 73 publications

(79 reference statements)

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“…Oxidation of the framework that we observed spectroscopically was paired with a chemiresistive decrease in resistance of the MOF device. This response matches with the putative p-type semi-conductivity of polycrystalline powders of Cu 3 (HHTP) 2 observed by us and others. ,,, …”

Section: Resultssupporting

confidence: 90%

“…This response matches with the putative p-type semi-conductivity of polycrystalline powders of Cu 3 (HHTP) 2 observed by us and others. 56,63,99,100 The oxidative or reductive transformation of NO to more easily captured or less toxic products has been deeply studied on supported catalysts, such as noble metals, metal oxides, and carbon-based surfaces. These reactions, such as the NO x storage reduction using Pt-Pd catalysts, are typically carried out at temperatures of 250−300 °C to access NO conversion to NO 2 at more than 95% in flow.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Fabrication of Multifunctional Electronic Textiles Using Oxidative Restructuring of Copper into a Cu-Based Metal–Organic Framework

Eagleton

Stolz

et al. 2022

J. Am. Chem. Soc.

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This paper describes a novel synthetic approach for the conversion of zero-valent copper metal into a conductive two-dimensional layered metal–organic framework (MOF) based on 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) to form Cu3(HHTP)2. This process enables patterning of Cu3(HHTP)2 onto a variety of flexible and porous woven (cotton, silk, nylon, nylon/cotton blend, and polyester) and non-woven (weighing paper and filter paper) substrates with microscale spatial resolution. The method produces conductive textiles with sheet resistances of 0.1–10.1 MΩ/cm2, depending on the substrate, and uniform conformal coatings of MOFs on textile swatches with strong interfacial contact capable of withstanding chemical and physical stresses, such as detergent washes and abrasion. These conductive textiles enable simultaneous detection and detoxification of nitric oxide and hydrogen sulfide, achieving part per million limits of detection in dry and humid conditions. The Cu3(HHTP)2 MOF also demonstrated filtration capabilities of H2S, with uptake capacity up to 4.6 mol/kgMOF. X-ray photoelectron spectroscopy and diffuse reflectance infrared spectroscopy show that the detection of NO and H2S with Cu3(HHTP)2 is accompanied by the transformation of these species to less toxic forms, such as nitrite and/or nitrate and copper sulfide and S x species, respectively. These results pave the way for using conductive MOFs to construct extremely robust electronic textiles with multifunctional performance characteristics.

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Section: Resultssupporting

confidence: 90%

Section: ■ Results and Discussionmentioning

confidence: 99%

Fabrication of Multifunctional Electronic Textiles Using Oxidative Restructuring of Copper into a Cu-Based Metal–Organic Framework

Eagleton

Stolz

et al. 2022

J. Am. Chem. Soc.

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“…Representative works of E-nose based on other chemiresistive materials such as chemically modified carbon nanotubes (CNTs) [216,217], metal oxides [43,218], surfacemodified Si nanowires [219], and polymer-carbon hybrids [220,221] were also successfully applied to disease diagnosis with high accuracy. In addition, the newly emerging sensing materials such as crystalline porous materials (e.g., metal-organic framework/porous coordination polymers [222][223][224][225][226], black phosphorus [227][228][229][230], covalent-organic frameworks (COFs) [231,232], and Mxenes [233][234][235]) and their hybrid materials/thin films [236,237] Organosulphur Thiourea [156] Figure 7 The summary of the number of VOCs' kinds from the skin of different patients (data from Table 5).…”

Section: Acidmentioning

confidence: 99%

Volatolomics in healthcare and its advanced detection technology

Jian

et al. 2022

Nano Res.

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Various diseases increasingly challenge the health status and life quality of human beings. Volatolome emitted from patients has been considered as a potential family of markers, volatolomics, for diagnosis/screening. There are two fundamental issues of volatolomics in healthcare. On one hand, the solid relationship between the volatolome and specific diseases needs to be clarified and verified. On the other hand, effective methods should be explored for the precise detection of volatolome. Several comprehensive review articles had been published in this field. However, a timely and systematical summary and elaboration is still desired. In this review article, the research methodology of volatolomics in healthcare is critically considered and given out, at first. Then, the sets of volatolome according to specific diseases through different body sources and the analytical instruments for their identifications are systematically summarized. Thirdly, the advanced electronic nose and photonic nose technologies for volatile organic compounds (VOCs) detection are well introduced. The existed obstacles and future perspectives are deeply thought and discussed. This article could give a good guidance to researchers in this interdisciplinary field, not only understanding the cutting-edge detection technologies for doctors (medicinal background), but also making reference to clarify the choice of aimed VOCs during the sensor research for chemists, materials scientists, electronics engineers, etc.

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“…Metal–organic frameworks (MOFs) are porous crystalline materials with a periodic network architecture constructed by metal ions/clusters and decorated organic linkers through the self-assembly process. − Compared with conventional porous substances, metal–organic frameworks (MOFs) have attracted intensive attention from researchers in recent times due to their large surface areas, , modifiable pore environments, − as well as broad-ranging applications including, but not limited to, gas sorption, − catalysis, − biomedicine, − sensing, − and so forth. Moreover, MOFs offer a paragon stage for investigating the structure–performance relationship because of their well-defined and tunable crystalline structures, − which exhibit huge benefits in both theoretical study and practical applications. − …”

Section: Introductionmentioning

confidence: 99%

Engineering a Series of Isoreticular Pillared Layer Ultramicroporous MOFs for Gas and Vapor Uptake

Duan

2022

Inorg. Chem.

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The accurate design and systematic engineering of MOFs is a large challenge due to the randomness of the synthesis process. Isoreticular chemistry provides a powerful approach for the regulation of pore environment in a more predictable and precise way to systematically control gas/vapor adsorption performances. Herein, utilizing an effective strategy of altering the “pillared” motifs of pillared layer structures, three isoreticular ultramicroporous MOFs were successfully constructed. Combined with the reported parent MOFs and two other recorded isoreticular MOFs modified with −NH2 and −CH3, gas and vapor uptake performances of this family of isoreticular pillared layer MOFs were systematically explored.

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A comparative study of honeycomb-like 2D π-conjugated metal–organic framework chemiresistors: conductivity and channels

Abstract: Honeycomb-like 2D π-conjugated conductive metal–organic framework gas sensors with channel sizes <2 nm and broad conductivity range are studied with low conductivity facilitating response, multi-porosity and short channel resulting in fast speed.

Cited by 20 publications

References 73 publications

Fabrication of Multifunctional Electronic Textiles Using Oxidative Restructuring of Copper into a Cu-Based Metal–Organic Framework

Fabrication of Multifunctional Electronic Textiles Using Oxidative Restructuring of Copper into a Cu-Based Metal–Organic Framework

Volatolomics in healthcare and its advanced detection technology

Engineering a Series of Isoreticular Pillared Layer Ultramicroporous MOFs for Gas and Vapor Uptake

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