Dependence of the surface roughness of MAPLE-deposited films on the solvent parameters |
| |
Authors: | A P Caricato G Leggieri M Martino A Vantaggiato D Valerini A Cretì M Lomascolo M G Manera R Rella M Anni |
| |
Institution: | (1) Department of Chemical Engineering, Inha University, 253 Yonghyundong, 402–751 Namgu, Incheon , South Korea; |
| |
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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|