Electrochemical Doping and Structural Modulation of Conductive Metal-Organic Frameworks
2024 (engelsk)Inngår i: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 63, nr 14, artikkel-id e202318387Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
In this study, we introduce an electrochemical doping strategy aimed at manipulating the structure and composition of electrically conductive metal-organic frameworks (c-MOFs). Our methodology is exemplified through a representative c-MOF, Ni3(HITP)2 (HITP=2, 3, 6, 7, 10, 11-hexaiminotriphenylene), synthesized into porous thin films supported by nanocellulose. While the c-MOF exhibits characteristic capacitive behavior in neutral electrolyte; it manifests redox behaviors in both acidic and alkaline electrolytes. Evidence indicates that the organic ligands within c-MOF undergo oxidation (p-doping) and reduction (n-doping) when exposed to specific electrochemical potentials in acidic and alkaline electrolyte, respectively. Interestingly, the p-doping process proves reversible, with the c-MOF structure remaining stable across cyclic p-doping/de-doping. In contrast, the n-doping is irreversible, leading to the gradual decomposition of the framework into inorganic species over a few cycles. Drawing on these findings, we showcase the versatile electrochemical applications of c-MOFs and their derived composites, encompassing electrochemical energy storage, electrocatalysis, and ultrafast actuation. This study provides profound insights into the doping of c-MOFs, offering a new avenue for modulating their chemical and electronic structure, thereby broadening their potential for diverse electrochemical applications.
sted, utgiver, år, opplag, sider
Wiley , 2024. Vol. 63, nr 14, artikkel-id e202318387
Emneord [en]
actuation, conductive MOFs, doping, electrochemical energy storage
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-367021DOI: 10.1002/anie.202318387ISI: 001174489500001PubMedID: 38349735Scopus ID: 2-s2.0-85186205987OAI: oai:DiVA.org:kth-367021DiVA, id: diva2:1983946
Merknad
QC 20250714
2025-07-142025-07-142025-07-14bibliografisk kontrollert