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Effect of Benzene Derivatives as Guest Molecules on Semiconductor Properties of MOF-199

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dc.contributor.author Zahadiya, H.
dc.contributor.author Wijesundera, R. P.
dc.contributor.author Hettiarachchi, C. V.
dc.date.accessioned 2021-06-10T14:55:53Z
dc.date.available 2021-06-10T14:55:53Z
dc.date.issued 2021
dc.identifier.citation Zahadiya, H., Wijesundera, R. P., Hettiarachchi, C. V., & Perera, I. R. (2021). Effect of Benzene Derivatives as Guest Molecules on Semiconductor Properties of MOF‐199. ChemistrySelect, 6(3), 425–429. https://doi.org/10.1002/slct.202004528 en_US
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/22656
dc.description.abstract A metal organic framework, MOF-199, has been synthesized under solvothermal conditions. Powder X-ray diffraction (PXRD) pattern, Fourier-transform infrared spectra (FT-IR) and scanning electron microscopic images (SEM) confirmed the formation of the expected MOF-199 structure. The semiconductor properties of MOF-199 were then fine-tuned by introducing three benzene derivatives as guest molecules (aniline, m-aminobenzoic acid and p-benzoquinone). Modified MOF-199 samples were characterized using PXRD and FT-IR. Mott-Schottky analysis and solid-state UV-visible spectroscopy were used to investigate the semiconductor properties of these materials. Once MOF was modified with benzene derivatives, slight changes in d spacing values of PXRD patterns and appearance of new peaks in FT-IR spectra were observed. The Mott-Schottky analysis of modified MOF-199 demonstrated an enhancement in the carrier concentration up to 83 % and a negative potential shift of the flat band potential compared to pure MOF-199, indicating a higher degree of band bending. According to the solid-state UV-visible spectra, doping with organic molecules reduced the bandgap in modified MOF-199. Thus, this study evidently showcases the potential of fine-tuning the semiconductor properties of a MOF according to the requirement that allows a single MOF to be utilized in a variety of applications with a simple modification. en_US
dc.publisher ChemistrySelect en_US
dc.subject Bandgap, Doping, Metal, Organic Frameworks, MOF-199, Semiconductor en_US
dc.title Effect of Benzene Derivatives as Guest Molecules on Semiconductor Properties of MOF-199 en_US


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