Abstract
Metal–organic frameworks (MOFs) are networks of metal ions or clusters bonded by organic ligands. Their exceptional micro-porosity and vast surface area make them versatile in various applications. Despite MOFs’ extensive potential, much remains unknown regarding their properties and applications across fields. Tunable micro-porosity depends on metal and ligand combinations, but determining the optimal pairings presents challenges. We aim to identify potential optimal candidates, employing graph kernels to study organic ligand structural characteristics. This machine learning approach enhances MOF development efficiency without the need for synthesis. The atomic graph accurately represents structural features, with graph kernels assessing similarities. A unified kernel, utilizing a weighted RBF kernel, measures MOF similarity and predicts ideal metal and ligand combinations. A support vector machine classification algorithm facilitates metal similarity assessment. This method can yield high specific surface area MOFs. Experiments using data from the CoRE MOF dataset demonstrate accurate predictive model generation for six of the seven well-known graph kernels in the literature.










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This work was supported by JSPS KAKENHI Grant Number 21K12015.
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Morikawa, Y., Shin, K., Kubouchi, M. et al. Prediction of specific surface area of metal–organic frameworks by graph kernels. J Supercomput 80, 13027–13047 (2024). https://doi.org/10.1007/s11227-024-05914-3
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DOI: https://doi.org/10.1007/s11227-024-05914-3