Abstract

Purpose: The aim of this paper is to show technical and chemical parameters influence on opticalproperties and morphology of poly (1,4-phenylenemethylenenitrilo- 1,4-phenylenenitrilomethylene) (PPI)thin films prepared by spin-coating methodDesign/methodology/approach: PPI thin films were prepared by spin-coating method with variousspinning rates and molar concentrations. The monomers, terephthal aledehyde (TPA) and p-phenylenediamine(PPDA), were dissolved in tetrahydrofuran (THF) and then mixed. Optical properties of PPI thin films wereexamined by UV-Vis and IR spectroscopy. Surface morphology of thin films were tested by atomic forcemicroscopy.Findings: This paper show the influence of technical parameters of spin coating process ontoproperties of deposited thin films, such as thickness, optical properties and morphology.Research limitations/implications: Optimizing spinning rates and concentrations of monomers isexcepted to allow for thin films to have required properties.Practical implications: Conjugated polymers with heteroatom in the backbone like PPI are veryinteresting materials for their electronic properties. PPI can be used as active element in organic bothsolar cells and light-emitting diodes (LEDs).Originality/value: Spin-coating method is very cheap and fast method to prepare PPI thin films ascompared with CVD method. Recognizing of optimal speed rate and concentration of solution willmake thin films with required properties to be prepared.
(PDF) Influence of technological conditions on optical properties and morphology of spin-coated PPI thin films. Available from: https://www.researchgate.net/publication/288447820_Influence_of_technological_conditions_on_optical_properties_and_morphology_of_spin-coated_PPI_thin_films [accessed Oct 29 2024].

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