Making Coaxial Wires out of Janus Dendrimers for Efficient Charge Transport

Iguarbe, V. ; Concellón, A. (Universidad de Zaragoza) ; Termine, R. ; Golemme, A. ; Barberá, J. (Universidad de Zaragoza) ; Serrano, J.L. (Universidad de Zaragoza)

Resumen: 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.

Idioma: Inglés

DOI: 10.1021/acsmacrolett.8b00505

Año: 2018

Publicado en: ACS macro letters 7, 9 (2018), 1138-1143
ISSN: 2161-1653

Factor impacto SCIMAGO: 2.201 - Inorganic Chemistry (Q1) - Polymers and Plastics (Q1) - Organic Chemistry (Q1) - Materials Chemistry (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-70174

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)