On-Chip Template-Directed Conversion of Metal Hydroxides to Metal-Organic Framework Films with Enhanced Adhesion
| Autor: | Mengsha Li, Dan Zhao, Hongye Yuan, Xin Yu, Jinqiao Dong, Avishek Karmakar, Hong Cai, Stephen J. Pennycook, Jianqiao Cui, Weidong Fan, Nanxi Li |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Solvent Metal chemistry.chemical_compound Nickel chemistry Chemical engineering visual_art visual_art.visual_art_medium Hydroxide Microelectronics General Materials Science Metal-organic framework Thin film 0210 nano-technology business Dissolution |
| Zdroj: | ACS applied materialsinterfaces. 12(32) |
| ISSN: | 1944-8252 |
| Popis: | Interfacial compatibility between metal-organic framework (MOF) films and the underlying substrates determines the integrity of MOF films and their associated functions, and thus it has been gaining growing attention. Herein, we present a comparison of adhesion properties at the chip level of two disparate nickel (Ni)-MOF films, respectively, obtained by direct hydro/solvothermal growth and template-directed conversion approaches. We demonstrate that the on-chip delamination/corrugation of the films obtained by the direct growth approach can be circumvented by adopting the template-directed approach, which enables delicate dissolution of primarily grown nanoflaked nickel hydroxide (Ni(OH)2) films and thus triggers the controllable formation of Ni-MOF films. Successful on-chip conversions of Ni(OH)2 layers to different Ni-MOF thin films with good homogeneity, compactness, and appreciable affinity to the substrates are verified by multiple microscopic and spectroscopic techniques. Notably, the resultant Ni-MOF films do not show delamination even after activation with additional treatments, such as solvent soaking, nitrogen (N2) blowing for 1 h, and scotch-tape tests. As a demonstration of the application of MOF films, a Ni-NDC (NDC stands for 2,6-naphthalenedicarboxylate) MOF-coated sensor exhibits selective detection toward benzene vapor. This study highlights the importance of interfaces between MOF films and substrates and provides new perspectives for integrating MOF films onto microelectronic devices with robust adhesion for practical applications. |
| Databáze: | OpenAIRE |
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