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Trannoy, V., Guillou, N., Livage, C., Roch-Marchal, C., Haouas, M., Leaustic, A., Allain, C., Clavier, G., Yu, P. & Devic, T. (2019) Fluorescent Zr(IV) Metal-Organic Frameworks Based on an Excited-State Intramolecular Proton Transfer-Type Ligand. Inorganic Chemistry, 58 6918–6926.
Added by: Richard Baschera (2019-07-15 14:27:14) Last edited by: Richard Baschera (2019-07-18 12:54:28) |
| Type de référence: Article DOI: 10.1021/acs.inorgchem.9b00388 Clé BibTeX: Trannoy2019a Voir tous les détails bibliographiques  |
Catégories: ST2E Créateurs: Allain, Clavier, Devic, Guillou, Haouas, Leaustic, Livage, Roch-Marchal, Trannoy, Yu Collection: Inorganic Chemistry |
Consultations : 1/393
Indice de consultation : 4% Indice de popularité : 1% |
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We report here the preparation of a series of Zr(IV) metal-organic frameworks (MOFs) of the MIL-140 structure type incorporating a ligand exhibiting an intense excited-state intramolecular proton transfer (ESIPT) fluorescence. These solids were obtained by systematically varying the substitution rate of 4,4'-biphenyldicarboxylate by 2,2'-bipyridine-3,3'-diol-5,5'-dicarboxylate, and they were thoroughly characterized by complementary techniques, including high-resolution powder X-ray diffraction, solid-state NMR spectroscopy, nitrogen sorption experiments, and time-resolved fluorescence. We show that the incorporation of the ESIPT-type ligand induces an increase of the hydrophilicity, leading ultimately to a higher sensitivity toward hydrolysis, a phenomenon rarely observed in this structure type, which is considered as one of the most stable among the Zr carboxylate MOFs. Eventually, optimization of the amount of fluorescent ligand within the structure allowed combining a decent microposity (S-BET {>} 750 m(2).g(-1)) and a high stability even in boiling water, together with a high fluorescence quantum yield ({>}30%).
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