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Direct in Situ Conversion of Metals into Metal-Organic Frameworks: A Strategy for the Rapid Growth of MOF Films on Metal Substrates

Title
Direct in Situ Conversion of Metals into Metal-Organic Frameworks: A Strategy for the Rapid Growth of MOF Films on Metal Substrates
Authors
Ji, H[Ji, Hoon]Hwang, S[Hwang, Sunhyun]Kim, K[Kim, Keonmok]Kim, C[Kim, CheolGi]Jeone, NC[Jeone, Nak Cheon]
DGIST Authors
Ji, H[Ji, Hoon]; Hwang, S[Hwang, Sunhyun]; Kim, K[Kim, Keonmok]; Kim, C[Kim, CheolGi]; Jeone, NC[Jeone, Nak Cheon]
Issue Date
2016-11-30
Citation
ACS Applied Materials and Interfaces, 8(47), 32414-32420
Type
Article
Article Type
Article
Keywords
Acid-Base ChemistryChelationConducting SubstratesConductive FilmsConductivitiesCopperCrystalline MaterialsElectronic ConductionElectronic ConductorsIn-Situ SynthesisIn Situ SynthesesIonsJava Programming LanguageLigandsMetal-Organic Frameworks (MOFs)Metal Organic FrameworkMetalsMOF FilmsOrganic PolymersOrganometallicsSelf Assembled MonolayersSimultaneous ReactionsSubstrates
ISSN
1944-8244
Abstract
The fabrication of metal-organic framework (MOF) films on conducting substrates has demonstrated great potential in applications such as electronic conduction and sensing. For these applications, direct contact of the film to the conducting substrate without a self-assembled monolayer (SAM) is a desired step that must be achieved prior to the use of MOF films. In this report, we propose an in situ strategy for the rapid one-step conversion of Cu metal into HKUST-1 films on conducting Cu substrates. The Cu substrate acts both as a conducting substrate and a source of Cu2+ ions during the synthesis of HKUST-1. This synthesis is possible because of the simultaneous reaction of an oxidizing agent and a deprotonating agent, in which the former agent dissolves the metal substrate to form Cu2+ ions while the latter agent deprotonates the ligand. Using this strategy, the HKUST-1 film could not only be rapidly synthesized within 5 min but also be directly attached to the Cu substrate. Based on microscopic studies, we propose a plausible mechanism for the growth reaction. Furthermore, we show the versatility of this in situ conversion methodology, applying it to ZIF-8, which comprises Zn2+ ions and imidazole-based ligands. Using an I2-filled HKUST-1 film, we further demonstrate that the direct contact of the MOF film to the conducting substrate makes the material more suitable for use as a sensor or electronic conductor. © 2016 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/2121
DOI
10.1021/acsami.6b12755
Publisher
American Chemical Society
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceLab for NanoBio-Materials & SpinTronics(nBEST)1. Journal Articles


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