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- Title
Hybrid CuTCNQ/AgTCNQ Metal-Organic Charge Transfer Complexes via Galvanic Replacement vs Corrosion-Recrystallization.
- Authors
Pearson, Andrew; Ramanathan, Rajesh; O'Mullane, Anthony P.; Bansal, Vipul
- Abstract
This study reports a hybrid of two metal-organic semiconductors that are based on organic charge transfer complexes of 7,7,8,8-tetracyanoquinodimethane (TCNQ). It is shown that the spontaneous reaction between semiconducting microrods of CuTCNQ with Ag+ ions leads to the formation of a CuTCNQ/AgTCNQ hybrid, both in aqueous solution and acetonitrile, albeit with completely different reaction mechanisms. In an aqueous environment, the reaction proceeds by a complex galvanic replacement (GR) mechanism, wherein in addition to AgTCNQ nanowires, Ag0 nanoparticles and Cu(OH)2 crystals decorate the surface of CuTCNQ microrods. Conversely, in acetonitrile, a GR mechanism is found to be thermodynamically unfavorable and instead a corrosion-recrystallization mechanism leads to the decoration of CuTCNQ microrods with AgTCNQ nanoplates, resulting in a pure CuTCNQ/AgTCNQ hybrid metal-organic charge transfer complex. While hybrids of two different inorganic semiconductors are regularly reported, this report pioneers the formation of a hybrid involving two metal-organic semiconductors that will expand the scope of TCNQ-based charge transfer complexes for improved catalysis, sensing, electronics, and biological applications.
- Subjects
ELECTRIC properties of organic semiconductors; ELECTRON donor-acceptor complexes; TETRACYANOQUINODIMETHANE; ORGANIC reaction mechanisms; ELECTROLYTIC corrosion; RECRYSTALLIZATION (Metallurgy); SCANNING electron microscopy
- Publication
Advanced Functional Materials, 2014, Vol 24, Issue 48, p7570
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.201402320