Electron Transport Materials for Organic Light-Emitting Diodes: Understanding the Crystal and Molecular Stability of the Tris(8-hydroxyquinolines) of Al, Ga, and In

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Costa, JCS (Autor) FCUP; Carlos F R A C Lima (Autor) Outra; Luis M N B F Santos (Autor) FCUP

Revista

Título: Journal of Physical Chemistry C

Vol. 118

Páginas: 21762-21769

ISSN: 1932-7447

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 26 Citações

Scopus - 27 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

Outras Informações

ID Authenticus: P-009-VGN

DOI: 10.1021/jp503935k

Abstract (EN): An experimental and theoretical study on the phase and molecular stability of Mq(3) (M = Al, Ga, and In; q = 8-hydroxyquinoline) is presented. The results suggest that the energy difference between the meridional and facial isomers of Mq(3) shall be significantly lower than previously though and provide an explanation for the reported mer-fac solid-solid transition. The first accurate vapor pressure measurements for Alq(3), Gaq(3), and Inq(3) are presented, which are of great relevance for the manufacturing of thin films by vacuum deposition. Phase transition thermodynamics indicates higher cohesive energies of the mer-isomers and an entropic differentiation that can be associated with the different molecular symmetry of the mer- and fac-isomers.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8