High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

π-Conjugation, π-π stacking, and long-range order play a central role in determining charge transport efficiency in organic materials. Covalent organic frameworks (COFs), which uniquely integrate these key structural and electronic features, have emerged as a promising platform for the development of novel electrically conductive organic materials. Intraframework π-conjugation has shown to play a key role in improving charge carrier mobility. Here, we report Joa-COF-2, a 3D COF lacking extended intraframework π-conjugation, yet exhibiting a remarkable charge carrier mobility of 14 ± 1 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup>. Joa-COF-2 adopts an 11-fold interpenetrated dia topology, featuring a tight interframework π-π stacking, which enables efficient charge transport in the absence of intraframework π-conjugation.

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Publication Details

Journal
Advanced Materials
Published
2026-02-03
DOI
https://doi.org/10.1002/adma.202517211
Primary Topic
Covalent Organic Framework Applications
Type
article
Field-Weighted Citation Impact
0.00

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article

High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

Joaquín Almarza, Aurelio Mateo‐Alonso, Natalia M. Padial, Manuel Melle‐Franco et al.
Advanced Materials
Covalent Organic Framework Applications
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High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

Joaquín Almarza, Aurelio Mateo‐Alonso, Natalia M. Padial, Manuel Melle‐Franco, Y Chen, Andrei N. Khlobystov, M. Bonn, Karol Strutyński, Hai I. Wang, Shuai Fu, Carlos Martí‐Gastaldo, Isabel del Barrio Gómez
article en

Abstract

π-Conjugation, π-π stacking, and long-range order play a central role in determining charge transport efficiency in organic materials. Covalent organic frameworks (COFs), which uniquely integrate these key structural and electronic features, have emerged as a promising platform for the development of novel electrically conductive organic materials. Intraframework π-conjugation has shown to play a key role in improving charge carrier mobility. Here, we report Joa-COF-2, a 3D COF lacking extended intraframework π-conjugation, yet exhibiting a remarkable charge carrier mobility of 14 ± 1 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup>. Joa-COF-2 adopts an 11-fold interpenetrated dia topology, featuring a tight interframework π-π stacking, which enables efficient charge transport in the absence of intraframework π-conjugation.

Advanced Materials
Ikerbasque (ES), University of Nottingham (GB), Universidad de Granada (ES), Utrecht University (NL), Parc Científic de la Universitat de València (ES), Max Planck Institute for Polymer Research (DE), Polymat (ES), Nanomaterials Research (United States) (US), University of Aveiro (PT)
European Commission, Eusko Jaurlaritza, Euskal Herriko Unibertsitatea, Ministério da Ciência, Tecnologia e Ensino Superior, Centro de Investigação em Materiais Cerâmicos e Compósitos, HORIZON EUROPE Framework Programme, Engineering and Physical Sciences Research Council, Fundação para a Ciência e a Tecnologia, European Regional Development Fund, Agencia Estatal de Investigación, European Social Fund
Openalex Percentile: Top 70%
Covalent Organic Framework Applications
DOIOpen Access PDFOpenAlex
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