title: Interfacial growth of large-area single-layer metal-organic framework nanosheets.
abstract: The air/liquid interface is an excellent platform to assemble two-dimensional (2D) sheets of materials by enhancing spontaneous organizational features of the building components and encouraging large length scale in-plane growth. We have grown 2D molecularly-thin crystalline metal-organic-framework (MOF) nanosheets composed of porphyrin building units and metal-ion joints (NAFS-13) under operationally simple ambient conditions at the air/liquid interface. In-situ synchrotron X-ray diffraction studies of the formation process performed directly at the interface were employed to optimize the NAFS-13 growth protocol leading to the development of a post-injection method -post-injection of the metal connectors into the water subphase on whose surface the molecular building blocks are pre-oriented- which allowed us to achieve the formation of large-surface area morphologically-uniform preferentially-oriented single-layer nanosheets. The growth of such large-size high-quality sheets is of interest for the understanding of the fundamental physical/chemical properties associated with ultra-thin sheet-shaped materials and the realization of their use in applications.
authors: 1] Nanoscience and Nanotechnology Research Center, Research Organization for the 21st Century, Osaka Prefecture University, Sakai, Osaka 599-8570, Japan [2] PRESTO, Japan Science and Technology Agency, Saitama, Japan [3] CREST, Japan Science and Technology Agency, Saitama, Japan.
authors: Rie
authors: R
authors: Makiura
authors: Oleg
authors: O
authors: Konovalov
mesh_terms: D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D009930:Organic Chemicals / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D008567:Membranes, Artificial; D009930:Organic Chemicals
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