Crystallization-induced light-emission enhancement of diphenylmethane derivatives |
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| Authors: | Samuel Guieu João Rocha Artur MS Silva |
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| Institution: | 1. CICECO, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;2. QOPNA, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal |
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| Abstract: | A family of diphenylmethane derivatives has been synthesized and their luminescence properties characterized. While in solution the compounds are weakly emissive, showing no aggregation-induced emission enhancement, the crystals of three dialkyl 5,5′-methylenebis(2-hydroxybenzoate) samples exhibit intense emission. This emission enhancement upon crystallization is ascribed to particular molecular packing, which stiffens the structure of the compounds via hydrogen bonds, preventing consecutive π–π interactions. |
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| Keywords: | Diphenylmethanes Luminescence Crystalline state Molecular packing |
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