Guest‐tunable dielectric sensing using a single crystal of HKUST‐1
There is rising interest on low-k dielectric materials based on porous metal-organic frameworks (MOFs) for improved electrical insulation in microelectronics. Herein, we demonstrate the concept of MOF dielectric sensor built from a single crystal of HKUST-1. We study guest encapsulation effects of p...
| Autores principales: | , , , |
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| Formato: | Journal article |
| Lenguaje: | English |
| Publicado: |
Wiley
2020
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| _version_ | 1826282504573681664 |
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| author | Babal, AS Chaudhari, AK Yeung, HH Tan, J |
| author_facet | Babal, AS Chaudhari, AK Yeung, HH Tan, J |
| author_sort | Babal, AS |
| collection | OXFORD |
| description | There is rising interest on low-k dielectric materials based on porous
metal-organic frameworks (MOFs) for improved electrical insulation in
microelectronics. Herein, we demonstrate the concept of MOF dielectric sensor
built from a single crystal of HKUST-1. We study guest encapsulation effects of
polar and non-polar molecules, by monitoring the transient dielectric response
and AC conductivity of the crystal exposed to different vapors (water, I2,
methanol, ethanol). The dielectric properties were measured along the <100>
crystal direction in the frequency range of 100 Hz to 2 MHz. The dielectric
data show the efficacy of MOF dielectric sensor for discriminating the guest
analytes. The time-dependent transient response reveals dynamics of the
molecular inclusion and exclusion processes in the nanoscale pores. Since
dielectric response is ubiquitous to all MOF materials (unlike DC conductivity
and fluorescence), our results demonstrate the potential of dielectric MOF
sensors compared to resistive sensors and luminescence-based approaches. |
| first_indexed | 2024-03-07T00:44:51Z |
| format | Journal article |
| id | oxford-uuid:8441c898-ee3b-47e3-b74f-ae892fbf2ed5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:44:51Z |
| publishDate | 2020 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:8441c898-ee3b-47e3-b74f-ae892fbf2ed52022-03-26T21:50:04ZGuest‐tunable dielectric sensing using a single crystal of HKUST‐1Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8441c898-ee3b-47e3-b74f-ae892fbf2ed5EnglishSymplectic ElementsWiley2020Babal, ASChaudhari, AKYeung, HHTan, JThere is rising interest on low-k dielectric materials based on porous metal-organic frameworks (MOFs) for improved electrical insulation in microelectronics. Herein, we demonstrate the concept of MOF dielectric sensor built from a single crystal of HKUST-1. We study guest encapsulation effects of polar and non-polar molecules, by monitoring the transient dielectric response and AC conductivity of the crystal exposed to different vapors (water, I2, methanol, ethanol). The dielectric properties were measured along the <100> crystal direction in the frequency range of 100 Hz to 2 MHz. The dielectric data show the efficacy of MOF dielectric sensor for discriminating the guest analytes. The time-dependent transient response reveals dynamics of the molecular inclusion and exclusion processes in the nanoscale pores. Since dielectric response is ubiquitous to all MOF materials (unlike DC conductivity and fluorescence), our results demonstrate the potential of dielectric MOF sensors compared to resistive sensors and luminescence-based approaches. |
| spellingShingle | Babal, AS Chaudhari, AK Yeung, HH Tan, J Guest‐tunable dielectric sensing using a single crystal of HKUST‐1 |
| title | Guest‐tunable dielectric sensing using a single crystal of HKUST‐1 |
| title_full | Guest‐tunable dielectric sensing using a single crystal of HKUST‐1 |
| title_fullStr | Guest‐tunable dielectric sensing using a single crystal of HKUST‐1 |
| title_full_unstemmed | Guest‐tunable dielectric sensing using a single crystal of HKUST‐1 |
| title_short | Guest‐tunable dielectric sensing using a single crystal of HKUST‐1 |
| title_sort | guest tunable dielectric sensing using a single crystal of hkust 1 |
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