TY - JOUR
T1 - Mixed Ionic and Electronic Conductivity in a Tetrathiafulvalene-Phosphonate Metal-Organic Framework
AU - Ribeiro, Catarina
AU - Tan, Bowen
AU - Figueira, Flávio
AU - Mendes, Ricardo F.
AU - Calbo, Joaquín
AU - Valente, Gonçalo
AU - Escamilla, Paula
AU - Paz, Filipe A.Almeida
AU - Rocha, João
AU - Dincă, Mircea
AU - Souto, Manuel
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2025/1/8
Y1 - 2025/1/8
N2 - Mixed ionic-electronic conductors have great potential as materials for energy storage applications. However, despite their promising properties, only a handful of metal-organic frameworks (MOFs) provide efficient pathways for both ion and electron transport. This work reports a proton-electron dual-conductive MOF based on tetrathiafulvalene(TTF)-phosphonate linkers and lanthanum ions. The formation of regular, partially oxidized TTF stacks with short S···S interactions facilitates electron transport via a hopping mechanism, reporting a room-temperature conductivity of 7.2 × 10-6 S cm-1. Additionally, the material exhibits a proton conductivity of 4.9 × 10-5 S cm-1 at 95% relative humidity conditions due to the presence of free −POH groups, enabling efficient proton transport pathways. These results demonstrate the potential of integrating electroactive building blocks along with phosphonate groups toward the development of mixed ionic-electronic conductors.
AB - Mixed ionic-electronic conductors have great potential as materials for energy storage applications. However, despite their promising properties, only a handful of metal-organic frameworks (MOFs) provide efficient pathways for both ion and electron transport. This work reports a proton-electron dual-conductive MOF based on tetrathiafulvalene(TTF)-phosphonate linkers and lanthanum ions. The formation of regular, partially oxidized TTF stacks with short S···S interactions facilitates electron transport via a hopping mechanism, reporting a room-temperature conductivity of 7.2 × 10-6 S cm-1. Additionally, the material exhibits a proton conductivity of 4.9 × 10-5 S cm-1 at 95% relative humidity conditions due to the presence of free −POH groups, enabling efficient proton transport pathways. These results demonstrate the potential of integrating electroactive building blocks along with phosphonate groups toward the development of mixed ionic-electronic conductors.
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U2 - 10.1021/jacs.4c13792
DO - 10.1021/jacs.4c13792
M3 - Article
C2 - 39700340
AN - SCOPUS:85212791748
SN - 0002-7863
VL - 147
SP - 63
EP - 68
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 1
ER -