Dual Proton–Electron Conductivity in 2D Azaborine Metal–Organic Frameworks

Alice Y. Su; Julius J. Oppenheim; Mircea Dincă

doi:10.1021/jacs.5c13331

Dual Proton–Electron Conductivity in 2D Azaborine Metal–Organic Frameworks

Alice Y. Su, Julius J. Oppenheim, Mircea Dincă

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Dual proton–electron conductors are highly sought after for applications in electronics and energy storage. Whereas two-dimensional metal–organic frameworks (MOFs) (2D MOFs) with high electrical conductivity are now numerous, introducing conduits for ion transport in these is challenging. Herein, we report the synthesis of two new mixed electron–proton conductors, M₃TABC₂(M = Cu, Zn; TABC = hexahydroxy-1,5,9-triaza-2,6,10-trihydroxyboracoronene), made from a new conjugated azaborine ligand with mobile protons. Cu₃TABC₂and Zn₃TABC₂show high electronic conductivities of 6.0 × 10^–2S/cm and 2.2 × 10^–4S/cm, and ionic conductivities of 1.6 ± 0.1 × 10^–5S/cm and 1.9 ± 0.4 × 10^–5S/cm, respectively. Overall, this work demonstrates the incorporation of mobile protons into aromatic ligands as a strategy for enabling mixed conductivity in 2D MOFs.

Original language	English (US)
Pages (from-to)	36837-36842
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	147
Issue number	40
DOIs	https://doi.org/10.1021/jacs.5c13331
State	Published - Oct 8 2025

All Science Journal Classification (ASJC) codes

Catalysis
Biochemistry
General Chemistry
Colloid and Surface Chemistry

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10.1021/jacs.5c13331

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title = "Dual Proton–Electron Conductivity in 2D Azaborine Metal–Organic Frameworks",

abstract = "Dual proton–electron conductors are highly sought after for applications in electronics and energy storage. Whereas two-dimensional metal–organic frameworks (MOFs) (2D MOFs) with high electrical conductivity are now numerous, introducing conduits for ion transport in these is challenging. Herein, we report the synthesis of two new mixed electron–proton conductors, M3TABC2(M = Cu, Zn; TABC = hexahydroxy-1,5,9-triaza-2,6,10-trihydroxyboracoronene), made from a new conjugated azaborine ligand with mobile protons. Cu3TABC2and Zn3TABC2show high electronic conductivities of 6.0 × 10–2S/cm and 2.2 × 10–4S/cm, and ionic conductivities of 1.6 ± 0.1 × 10–5S/cm and 1.9 ± 0.4 × 10–5S/cm, respectively. Overall, this work demonstrates the incorporation of mobile protons into aromatic ligands as a strategy for enabling mixed conductivity in 2D MOFs.",

author = "Su, \{Alice Y.\} and Oppenheim, \{Julius J.\} and Mircea Dinc{\u a}",

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doi = "10.1021/jacs.5c13331",

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AU - Su, Alice Y.

AU - Oppenheim, Julius J.

AU - Dincă, Mircea

PY - 2025/10/8

Y1 - 2025/10/8

N2 - Dual proton–electron conductors are highly sought after for applications in electronics and energy storage. Whereas two-dimensional metal–organic frameworks (MOFs) (2D MOFs) with high electrical conductivity are now numerous, introducing conduits for ion transport in these is challenging. Herein, we report the synthesis of two new mixed electron–proton conductors, M3TABC2(M = Cu, Zn; TABC = hexahydroxy-1,5,9-triaza-2,6,10-trihydroxyboracoronene), made from a new conjugated azaborine ligand with mobile protons. Cu3TABC2and Zn3TABC2show high electronic conductivities of 6.0 × 10–2S/cm and 2.2 × 10–4S/cm, and ionic conductivities of 1.6 ± 0.1 × 10–5S/cm and 1.9 ± 0.4 × 10–5S/cm, respectively. Overall, this work demonstrates the incorporation of mobile protons into aromatic ligands as a strategy for enabling mixed conductivity in 2D MOFs.

AB - Dual proton–electron conductors are highly sought after for applications in electronics and energy storage. Whereas two-dimensional metal–organic frameworks (MOFs) (2D MOFs) with high electrical conductivity are now numerous, introducing conduits for ion transport in these is challenging. Herein, we report the synthesis of two new mixed electron–proton conductors, M3TABC2(M = Cu, Zn; TABC = hexahydroxy-1,5,9-triaza-2,6,10-trihydroxyboracoronene), made from a new conjugated azaborine ligand with mobile protons. Cu3TABC2and Zn3TABC2show high electronic conductivities of 6.0 × 10–2S/cm and 2.2 × 10–4S/cm, and ionic conductivities of 1.6 ± 0.1 × 10–5S/cm and 1.9 ± 0.4 × 10–5S/cm, respectively. Overall, this work demonstrates the incorporation of mobile protons into aromatic ligands as a strategy for enabling mixed conductivity in 2D MOFs.

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Dual Proton–Electron Conductivity in 2D Azaborine Metal–Organic Frameworks

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