Layer-by-layer Assembly of Porphyrin-Based Metal-Organic Frameworks on Solids Decorated with Graphene Oxideстатья

Информация о цитировании статьи получена из Scopus, Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 июня 2017 г.

Работа с статьей

[1] Layer-by-layer assembly of porphyrin-based metal-organic frameworks on solids decorated with graphene oxide / A. I. Zvyagina, A. A. Shiryaev, A. E. Baranchikov et al. // New Journal of Chemistry. — 2017. — Vol. 41, no. 3. — P. 948–957. Fabrication of metal-organic frameworks (MOFs) as films on surfaces is a challenging and actively developed field in context of potential applications of surface-integrated MOFs (SURMOFs) for sensing, catalysis and molecular electronics. Herein, we report a method for preparation of composite of graphene oxide (GO) and zinc tetracarboxyphenyl porphyrin SURMOF, which is potentially useful as synergetic catalyst, on planar solid supports. The SURMOF films were assembled via layer-by-layer coordination of zinc porphyrins with ZnAc2 clusters on the ultrathin surface coatings of GO. We found, that non-covalent adsorption of zinc acetate on the GO film is essential for anchoring porphyrin molecules in the growthinitiating template layer. UV-vis spectroscopy provided evidence for a stepwise assembly of the deposited SURMOF films. By using a combination of X-ray diffraction, scanning electron microscopy and atomic force microscopy methods, we showed that the resulting GO-associated SURMOFs exhibit leaflet-like planar morphology with the out-of-plane periodicity. Because of the influence of well-defined surface geometry, the molecular organization in thin SURMOFs is different from that of synthetic bulk materials with similar composition. The results of BET method measurements suggest the exceptionally large surface area and adsorption capacity of fabricated SURMOF films. Our results provide a basis for new types of composite SURMOF structures using the GO surface coatings as growth-guiding scaffolds for metal-organic coordination networks integrated with various solid supports. [ DOI ]

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