Ultrathin films of poly(2,5-dicyano-p-phenylene-vinylene)-co-(p-phenylene-vinylene) DCN-PPV/PPV: A Langmuir and Langmuir-Blodgett films study

Author(s)

Soares, Cecilia Goncalves ^[1] ; Caseli, Luciano ^[1] ; Bertuzzi, Diego Luan ^[2] ; Santos, Fabio Santana ^[2] ; Garcia, Jarem Raul ^[2] ; Peres, Laura Oliveira ^[1]

Affiliation

^[1] Univ Fed Sao Paulo, Inst Environm Chem & Pharmaceut Sci, Diadema, SP - Brazil

^[2] State Univ Ponta Grossa UEPG, Dept Chem, BR-84030900 Ponta Grossa, PR - Brazil

• Document type: Journal article
• Source: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS; v. 467, p. 201-206, FEB 20 2015.
• Web of Science Citations: 3

Abstract

Manipulation of polymeric films at the molecular level can be appropriate to improve the properties of optoelectronic devices. In this paper, the copolymer poly(2,5-dicyano-p-phenylene-vinylene)-co-(p-phenylene- vinylene) (DCN-PPV/PPV) was spread on the air-water interface forming Langmuir films. The monolayers were investigated with surface pressure-area isotherms, and polarization modulation infrared reflection-absorption spectroscopy (PM-IRRAS). The monomolecular films were then transferred to solid supports through the Langmuir-Blodgett (LB) technique, and characterized by PM-IRRAS and atomic force microscopy, with the viability of the film as an optical device investigated with fluorescence spectroscopy. The immobilization of this copolymer on solid supports as LB films provided a molecular architecture with control of their molecular properties, which may have applications for the production of optoelectronic devices. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 13/10213-1 - Interaction of bioactive materials in ultrathin films organized in models for biointerfaces models for investigation of molecular recognition processes and associated molecular mechanisms
• Grantee: Luciano Caseli
• Support Opportunities: Regular Research Grants