Hostname: page-component-5d59c44645-dknvm Total loading time: 0 Render date: 2024-02-27T20:20:24.807Z Has data issue: false hasContentIssue false

Ionic Self Assembly and Low Conversion Temperature (P-Phenylene Vinylene)

Published online by Cambridge University Press:  21 March 2011

A. Marletta
Instituto de Física de São Carlos, Universidade de São Paulo, C.P. 369, 13560-970, São Carlos-SP, Brazil
Get access


We developed an alternative approach to produce self-assembled (SA) thin films of poly(p-phenylene vinylene) (PPV) by controlled substitution of the chloride counterion of the precursor poly(xylylidene tetrahydrothiophenium chloride) (PTHT) by a long chain dodecylbenzenesulfonate (DBS) anion. The main advantage of this novel procedure is that thermal conversion through the elimination of DBS may be performed at considerably lower temperatures (80-100 °C) in few minutes. In addition it provides PPV films with better optical properties and low incorporation of structural defects, like carbonyl groups. An important feature of these SA-PPV films is the well resolved vibronic structures in the photoluminescence and absorption spectra. We observe a dramatic improvement in quantum efficiency of PPV when the conversion temperature is decreased from 230 to 80 °C. This effect may be explained by the decrease of extrinsic defect incorporations (carbonyl groups) detected by infrared (IR) measurements. This improvement in the optical properties at low temperatures may help us to understand basic phenomena, such as the nature of excitons in PPVs.

Research Article
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)



1. Marletta, A., Gonçalves, D., Oliveira, O. N. Jr., Faria, R. M., Guimarães, F. E. G., Adv. Mat. 12, 69 (2000).Google Scholar
2. Wu, A., Yokoyama, S., Watanabe, S., Kakimoto, M., Imai, Y., Araki, T., Iriyama, K., Thin Solid Film 244, 750 (1994).Google Scholar
3. Rothberg, L. J., Yan, M., Kwock, E. W., Miller, T. M., Galvin, M. E., Son, S., Papadimitrakopoulos, F., IEEE Trans.Electron Dev. 44, 1258 (1997).Google Scholar
4. Marletta, A., Gonçalves, D., Oliveira, O. N. Jr., Faria, R. M., Guimarães, F. E. G., Macromolecules 33, 5886 (2000).Google Scholar
5. Marletta, A., Castro, F. A., Gonçalves, D., Oliveira, O. N. Jr., Faria, R. M., Guimarães, F. E. G., presented at the 2000 Synthetic Metals Meeting Gastein, Austria, 2000 (unpublished)Google Scholar
6. Bradley, D. D. C., J.Phys. D: Appl. Phys. 20, 1389 (1987).Google Scholar
7. Herold, M., Gmeiner, J., Schwoerer, M., Acta Polymer 45, 392 (1994).Google Scholar