Luminescent Metal–Organic Frameworks (MOFs) as a Chemopalette: Tuning the Thermochromic Behavior of Dual‐Emissive Phosphorescence by Adjusting the Supramolecular Microenvironments |
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| Authors: | Dr Shun‐Ze Zhan Mian Li Prof Dr Seik Weng Ng Prof Dr Dan Li |
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| Institution: | 1. Department of Chemistry and Research Institute for Biomedical and Advanced Materials, Shantou University, Guangdong 515063 (P.R. China), Fax: (+86)?754‐82902767;2. Department of Chemistry, University of Malaya, 50603 Kuala Lumpur (Malaysia);3. Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203 Jeddah (Saudi Arabia) |
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| Abstract: | Two classical copper(I)‐cluster‐based luminophores, namely, Cu4I4 and Cu3Pz3]2 (Pz=pyrazolate), are immobilized in a supramolecular system through the formation of metal–organic framework (MOF) materials. This series of luminescent MOF materials, namely, Cu4I4(NH3)Cu3( L1 )3]n, Cu4I4(NH2CH3)Cu3( L1 )3]n, and Cu4I4Cu3( L2 )3]n ( L1 =3‐(4‐pyridyl)‐5‐(p‐tolyl)pyrazolate; L2 =3‐(4‐pyridyl)‐5‐(2,4‐dimethylphenyl)pyrazolate), exhibit diverse thermochromism attributed to the relative functioning efficacy of the two coordination luminophores. Such an intriguing chemopalette effect is regulated by the different supramolecular microenvironments between the two‐dimensional layers of these MOFs, and in particular, by the fine‐tuned Cu–Cu distances in the excimeric Cu3Pz3]2 luminophore. The structure–property elucidation of the thermochromic behavior allows one to understand these optical materials with unusual dual‐emissive properties. |
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| Keywords: | copper luminescence metal– organic frameworks supramolecular chemistry thermochromism |
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