Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 45, Pages 14614-14618Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201405330
Keywords
conducting materials; covalent organic frameworks; electron donor; microporous materials; tetrathiafulvalene
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Funding
- National Natural Science Foundation of China [21203140]
- Research Fund for the Doctoral Program of Higher Education of China [20130141110008]
- Wuhan University [203273642]
- NSFC
- State Basic Program
- Chinese Academy of Sciences
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Two-dimensional covalent organic frameworks (2D COFs) provide a unique platform for the molecular design of electronic and optoelectronic materials. Here, the synthesis and characterization of an electroactive COF containing the well-known tetrathiafulvalene (TTF) unit is reported. The TTF-COF crystallizes into 2D sheets with an eclipsed AA stacking motif, and shows high thermal stability and permanent porosity. The presence of TTF units endows the TTF-COF with electron-donating ability, which is characterized by cyclic voltammetry. In addition, the open frameworks of TTF-COF are amenable to doping with electron acceptors (e.g., iodine), and the conductivity of TTF-COF bulk samples can be improved by doping. Our results open up a reliable route for the preparation of well-ordered conjugated TTF polymers, which hold great potential for applications in fields from molecular electronics to energy storage.
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