Work

Elucidation of the Transformation of Coordination Polymer Intermediates into 2D Metal–Organic Framework Films during Chemical Vapor Deposition

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Chemical vapor deposition (CVD) is a rising tool to synthesize metal–organic framework (MOF) films. Despite growing interest and usage, its mechanism is less known. Especially, the identification of intermediates is crucial for understanding the growth mechanism and further controlling their structures. In this paper, we investigated the growth mechanism of 2D MOF Cu 3 (C 6 O 6 ) 2 film by CVD. We identified a novel intermediate phase: an octahedral coordination polymer that transforms into an edge-on-oriented 2D MOF. In situ grazing-incidence wide-angle X-ray scattering, X-ray absorption near-edge structure, high-resolution transmission electron microscopy, and Raman spectroscopy studies confirmed that this transformation involves the removal of pillars, leading to the formation of a square-planar 2D MOF. With the identification of intermediates, our study deepens the understanding of MOF film formation by CVD, which lays a foundation to control the structure.

Source: Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.4c04211

Authors: Myeonggeun Choe, Sarah S. Park, Hee Cheul Choi

Institution: Pohang University of Science and Technology

Language: English

Topic: Metal-Organic Frameworks: Synthesis and Applications

Subfield: Inorganic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funders: Pohang University of Science and Technology, National Research Foundation of Korea, Samsung