Not only columns: high hole mobility in a discotic nematic mesophase formed by metal-containing Porphyrin-core dendrimers

Concellón, Alberto (Universidad de Zaragoza) ; Marcos, Mercedes (Universidad de Zaragoza) ; Romero, Pilar (Universidad de Zaragoza) ; Serrano, José Luis (Universidad de Zaragoza) ; Termine, Roberto ; Golemme, Attilio

Resumen: We report a new family of multifunctional liquid-crystalline porphyrin-core dendrimers that have coumarin functional groups around the porphyrin core. Porphyrin metalation strongly affects the photophysical properties, and therefore ZnII and CuII derivatives have also been prepared. All the synthesized dendrimers form a nematic discotic mesophase. Their high tendency for homeotropic alignment makes these dendrimers excellent candidates for device applications, owing to their easy processability, spontaneous alignment between electrodes, and self-healing of defects because of their dynamic nature. The charge mobility values of these materials are the highest ever reported for a nematic discotic phase. Moreover, these values are similar to the highest values reported for ordered columnar mesophases, and this shows that a supramolecular organization in columns is not necessary to achieve high charge mobility.

Idioma: Inglés

DOI: 10.1002/anie.201611017

Año: 2017

Publicado en: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 56, 5 (2017), 1259-1263
ISSN: 1433-7851

Factor impacto JCR: 12.102 (2017)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 14 / 169 = 0.083 (2017) - Q1 - T1

Factor impacto SCIMAGO: 6.155 - Chemistry (miscellaneous) (Q1) - Catalysis (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/E04
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2012-35692
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-70174

Tipo y forma: Congress (PostPrint)

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