Thiatruxene-Based Conductive MOF: Harnessing Sulfur Chemistry for Enhanced Proton Transport
Functionalizing the organic building blocks of electrically conductive MOFs (EC-MOFs) can be a powerful method for adjusting the electronic structure and introducing a specific chemistry. However, designing EC-MOF linkers with reactive functional groups for postsynthetic modification is challenging due to the requirements of d-p conjugation. This work addresses such design limitations by synthesizing an EC-MOF, Cu-thiatruxene (Cu-thiaTRX). This conductive framework incorporated a truxene-based linker with heterocyclic sulfur, allowing for efficient conjugation and an electrical conductivity of 2.2 × 10<sup>-2</sup> S cm<sup>-1</sup>. Harnessing sulfur chemistry in Cu-thiaTRX involves a two-step postsynthetic modification: oxidation and S<sub>N</sub>Ar. The sulfinic groups introduced in the framework enabled tunable proton conductivity, leading to a 200-fold improvement. These results highlight the importance of a rational linker design for functionalization.
Authors
- Ji Yong Choi (ORCID: https://orcid.org/0000-0001-9738-3543)
- Brianna Check (ORCID: https://orcid.org/0000-0002-9710-7167)
- Xiaoyu Fang (ORCID: https://orcid.org/0000-0002-4168-3130)
- Chenwei Lu (ORCID: https://orcid.org/0000-0002-5170-8979)
- Jihye Park (ORCID: https://orcid.org/0000-0002-8644-2103)
- Samuel Spotts
- Dario Nuñez
Institutions
- University of Colorado Boulder (US)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2024-09-16
- DOI
- https://doi.org/10.1021/jacs.4c08659
- Citations
- 26
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 4.12
Funders
- National Research Foundation of Korea
- American Chemical Society Petroleum Research Fund
- Office of Naval Research