Deterministic control of surface mounted metal-organic framework growth orientation on metallic and insulating surfaces

Author(s)

Vello, Tatiana Parra ^{[1, 2]} ; Strauss, Mathias ^[1] ; Rodrigues Costa, Carlos Alberto ^[1] ; Correa, Catia Crispilho ^[1] ; Bof Bufon, Carlos Cesar ^{[1, 3, 2]}

Affiliation

^[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Dept Phys Chem, Inst Chem IQ, BR-13084862 Campinas, SP - Brazil

^[3] Sao Paulo State Univ UNESP, Postgrad Program Mat Sci & Technol POSMAT, BR-17033360 Bauru, SP - Brazil

• Document type: Journal article
• Source: Physical Chemistry Chemical Physics; v. 22, n. 10, p. 5839-5846, MAR 14 2020.
• Web of Science Citations: 7

Abstract

Surface-Mounted Metal-Organic Frameworks (SURMOFs) are promising materials with a wide range of applications and increasing interest in different technological fields. The use of SURMOFs as both the active and passive tail in electronic devices is one of the most exciting possibilities for such a hybrid material. In such a context, the adhesion, roughness, and crystallinity control of SURMOF thin films are challenging and have limited their application in new functional electronic devices. Self-assembled monolayers (SAMs), which ensure the effective attachment of the SURMOF onto substrates, also play a critical role that can profoundly affect the SURMOF growth mechanism. Herein, we demonstrate that the deterministic control of the SAM chain length influences the preferential orientation of SURMOF films. As the SAM chain length increases, HKUST-1 thin films tend to change their preferential orientation from the {[}111] towards the {[}100] direction. Such control can be achieved on both electrically conducting and insulating substrates, opening the possibility of having the very same preferential crystalline orientation on surfaces of different nature, which is of fundamental importance for SURMOF-based functional electronic devices. (AU)

• FAPESP's process: 14/25979-2 - Fabrication and characterization of devices and systems based on hybrid nanomembranes
• Grantee: Carlos César Bof Bufon
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 16/25346-5 - Capacitive devices for hybrid nanostructures characterization: study of electrical properties of surface metal-organic frameworks -SURMOFs- and metallophthalocyanines
• Grantee: Tatiana Parra Vello
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 14/50906-9 - INCT 2014: in Functional Complex Materials
• Grantee: Fernando Galembeck
• Support Opportunities: Research Projects - Thematic Grants