title: Highly crystalline nanofilm by layering of porphyrin metal-organic framework sheets.
abstract: Layer-structured metal-organic framework (MOF) nanofilms (NAFS-2) consisting of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (H(2)TCPP) molecules and copper ion metal linkers were assembled on a gold or a silicon surface by applying a solution-based layer-by-layer growth technique coupled with the Langmuir-Blodgett method. Synchrotron X-ray diffraction measurements showed that NAFS-2 exhibits highly crystalline order in both the in-plane and out-of-plane orientations. Each MOF sheet (monolayer) adheres without pillaring units, and the nanofilm maintains its highly crystalline order above 200 °C. The results provide an excellent demonstration of how to exercise in a facile way fine control of the assembly of molecule-based hybrid objects and their thermal stability, which is a key issue for the future use of MOFs in potential applications in nanodevices.
authors: Division of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
authors: Soichiro
authors: S
authors: Motoyama
authors: Rie
authors: R
authors: Makiura
authors: Osami
authors: O
authors: Sakata
authors: Hiroshi
authors: H
authors: Kitagawa
mesh_terms: D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D011166:Porphyrins / Q000737:chemistry*
chemical_list: D011166:Porphyrins; C018395:tetracarboxyphenylporphine; D003300:Copper