Modulating Hierarchical Micro/Mesoporosity by a Mixed Solvent Approach in Al-MOF: Stabilization of MAPbBr3 Quantum Dots |
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| Authors: | Subhajit Laha Dr. Darsi Rambabu Dr. Sohini Bhattacharyya Prof. Tapas Kumar Maji |
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| Affiliation: | 1. Molecular Materials Laboratory, Chemistry and Physics of, Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064 India;2. Molecular Materials Laboratory, Chemistry and Physics of, Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064 India These authors contributed equally to this work. |
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| Abstract: | Various hierarchical micro/mesoporous MOFs based on {[Al(μ-OH)(1,4-NDC)]⋅H2O} ( MOF1 ) with tunable porosities (pore volume and surface area) have been synthesized by assembling AlIII and 1,4-NDC (1,4-naphthalenedicarboxylate) under microwave irradiation by varying water/ethanol solvent ratio. Water/ethanol mixture has played a crucial role in the mesopore generation in MOF1M25 , MOF1M50 , and MOF1M75 , which is achieved by in situ formation of water/ethanol clusters. By adjusting the ratio of water/ethanol, the particle size, surface area and micro/mesopore volume fraction of the MOFs are controlled. Furthermore, reaction time plays a critical role in mesopore formation as realized by varying reaction time for the MOF with 50 % ethanol ( MOF1M50 ). Additionally, hierarchical MOF ( MOF1M50 ) has been used as a template for the stabilization of MAPbBr3 (MA=methylammonium) perovskite quantum dots (PQDs). MAPbBr3 PQDs are grown inside MOF1M50 , where mesopores control the size of PQDs which leads to quantum confinement. |
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| Keywords: | coordination polymers hybrid materials mesoporous materials microporous materials quantum dots |
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