Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 216, Issue 13, Pages 1387-1395Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201500086
Keywords
charge transfer; charge transport; conjugated polymers; functionalization of polymers; redox polymers
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Funding
- Support for Tokyotech Advanced Researchers (STAR)
- Futaba Electronics Memorial Foundation
- Takahashi Industrial and Economic Research Foundation
- Shorai Foundation for Science and Technology
- Foundation for the Promotion of the Industrial Explosives Technology
- Mukai Science and Technology Foundation
- Maekawa Houonkai Foundation
- General Sekiyu R&D Encouragement Assistance Foundation
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The [2 + 2] cycloaddition-retroelectrocyclization between electron-rich alkynes and tetracyanoethylene (TCNE)/7,7,8,8-tetracyanoquinodimethane (TCNQ), yielding the tetracyanated donor-acceptor (D-A) chromophores, is a new class of click chemistry reactions, due to the high efficiencies, no byproducts, and applicability to polymer syntheses. As compared to the conventional click reactions represented by the Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC), these new click reactions provide fascinating optoelectronic properties originating from the D-A chromophore structures formed. A series of -conjugated aromatic polymers containing electron-rich alkynes were successfully functionalized by these click reactions, producing novel organic or organometallic materials featuring conducting and photovoltaic properties in thin film electronic devices. This review article describes the recent results of the author's research group. The power of click chemistry is highlighted by the polymer synthesis using CuAAC. This is followed by the alkyne-TCNE/TCNQ postfunctionalization to produce high-performance aromatic polymers for use as active components in organic electronic devices, such as thin film transistors, organic solar cells and polymer memory devices.
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