Abstract

Abstract: Matrix-assisted pulsed laser evaporation (MAPLE) was used to deposit layers of poly(9,9-dioctylfluorene) (PFO) to study the relation between the solvent properties (laser light absorption, boiling temperature and solubility parameters) and the morphology of the deposited films. To this end, the polymer was diluted (0.5 wt%) in tetrahydrofuran—THF, toluene and toluene/hexane mixtures. The thickness of the films was equal to 70 ± 20 nm. The morphology and uniformity of the films was investigated by Atomic Force Microscopy and by the photoluminescence emission properties of the polymer films, respectively. It is shown that, although the solubility parameters of the solvents are important in controlling the film roughness and morphology, the optical absorption properties and boiling temperature play a very important role, too. In fact, for matrices characterized by the same total solubility parameter, lower roughness values are obtained for films prepared using solvents with lower penetration depth of the laser radiation and higher boiling temperatures.

Autore Pugliese

• Caricato Anna Paola , Martino Maurizio , Anni Marco

Tutti gli autori

• Caricato A.P. , Leggieri G. , Martino M. , Vantaggiato A. , Valerini D. , Creti' A. , Lomascolo M. , Manera M. G. , Rella R. , Anni M.

Titolo volume/Rivista

APPLIED PHYSICS. A, MATERIALS SCIENCE & PROCESSING

Anno di pubblicazione

2010

ISSN

1432-0630

ISBN

Non Disponibile

Numero di citazioni Wos

18

Ultimo Aggiornamento Citazioni

27/04/2018

Numero di citazioni Scopus

20

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile