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Making coaxial wires out of Janus dendrimers for efficient charge transport
- Source :
- Digital.CSIC. Repositorio Institucional del CSIC, instname
- Publication Year :
- 2018
- Publisher :
- American Chemical Society, 2018.
-
Abstract
- Highly conductive coaxial supramolecular wires are prepared by using a new family of Janus dendrimers that combines two rigid aromatic parts and two flexible aliphatic parts. The two external regions consist of a promesogenic block based on a third generation Percec-type dendron with four terminal dodecyloxy alkyl chains, whereas the two internal regions are formed by one, two, or three carbazole units bearing flexible spacers. These functional Janus dendrimers self-organize in columnar liquid crystal phases with a strong coaxial segregation within each column. Interestingly, the charge mobility studies revealed that these Janus dendrimers display semiconductor properties with hole mobility values up to 0.5 cm2 V–1 s–1, depending on the packing within the columns which can be tuned by the number of carbazole functional units. The high hole mobility values measured in these materials are among the highest values reported for columnar liquid crystals.<br />This work was supported by the MINECO-FEDER funds (project CTQ2015-70174), Gobierno de Aragón-FSE (Research Group E04). Authors would like to acknowledge the use of the SAI (UZ) and CEQMA (UZ-CSIC) Services. A. Golemme is grateful for support from the ELIOTROPO project (PON03PE_00092_2). R. Termine was supported by the MERAVIGLIE project (CUP J28C17000080006).
- Subjects :
- Materials science
Polymers and Plastics
Organic Chemistry
Supramolecular chemistry
Nanotechnology
Charge (physics)
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Inorganic Chemistry
Dendrimer
Materials Chemistry
Janus
Coaxial
0210 nano-technology
Electrical conductor
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Digital.CSIC. Repositorio Institucional del CSIC, instname
- Accession number :
- edsair.doi.dedup.....f58c74c707a48656a64eb89624f36e83