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Opt Express


Title:Calculations of adsorption-dependent refractive indices of metal-organic frameworks for gas sensing applications
Author(s):Salehifar N; Holtmann P; Hungund AP; Dinani HS; Gerald RE; Huang J;
Address:
Journal Title:Opt Express
Year:2023
Volume:31
Issue:5
Page Number:7947 - 7965
DOI: 10.1364/OE.478427
ISSN/ISBN:1094-4087 (Electronic) 1094-4087 (Linking)
Abstract:"Detection of volatile organic compounds (VOCs) is one of the most challenging tasks in modelling breath analyzers because of their low concentrations (parts-per-billion (ppb) to parts-per-million (ppm)) in breath and the high humidity levels in exhaled breaths. The refractive index is one of the crucial optical properties of metal-organic frameworks (MOFs), which is changeable via the variation of gas species and concentrations that can be utilized as gas detectors. Herein, for the first time, we used Lorentz-Lorentz, Maxwell-Ga, and Bruggeman effective medium approximation (EMA) equations to compute the percentage change in the index of refraction (Deltan%) of ZIF-7, ZIF-8, ZIF-90, MIL-101(Cr) and HKUST-1 upon exposure to ethanol at various partial pressures. We also determined the enhancement factors of the mentioned MOFs to assess the storage capability of MOFs and the biosensors' selectivity through guest-host interactions, especially, at low guest concentrations"
Keywords:
Notes:"PubMed-not-MEDLINESalehifar, Nahideh Holtmann, Peter Hungund, Abhishek Prakash Dinani, Homayoon Soleimani Gerald, Rex E Huang, Jie eng 2023/03/03 Opt Express. 2023 Feb 27; 31(5):7947-7965. doi: 10.1364/OE.478427"

 
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