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Title: | Effect of Benzene Derivatives as Guest Molecules on Semiconductor Properties of MOF-199 |
Authors: | Zahadiya, H. Wijesundera, R. P. Hettiarachchi, C. V. |
Keywords: | Bandgap, Doping, Metal, Organic Frameworks, MOF-199, Semiconductor |
Issue Date: | 2021 |
Publisher: | ChemistrySelect |
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 |
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. |
URI: | http://repository.kln.ac.lk/handle/123456789/22656 |
Appears in Collections: | Chemistry |
Files in This Item:
File | Description | Size | Format | |
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Prof. L.B.D.R.P. Wijesundera - Effect of Benzene Derivatives as.pdf | 405.74 kB | Adobe PDF | View/Open |
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