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Photo-irradiation effects on the surface morphology of poly(p-phenylene vinylene) films |
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| Authors: | Alexandre Marletta ML Vega Y Galvão Gobato RM Faria |
| Institution: | a Instituto de Física, Universidade Federal de Uberlândia, CP 593, 38400-902 Uberlândia, MG, Brazil b Departamento de Física, Universidade Federal do Piauí, 64049-690 Teresina, PI, Brazil c Faculdade de Tecnologia e Ciências, Rua Artêmia Pires Freitas s/n, 44115-000 Feira de Santana, BA, Brazil d Departamento de Física, Universidade Federal de São Carlos, CP 676, 13565-905 São Carlos, SP, Brazil e Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brazil |
| Abstract: | In this work, we have studied the surface morphology of photo-irradiated poly(p-phenylene vinylene) (PPV) thin films by using atomic force microscopy (AFM). We have analyzed the first-order statistical parameters, the height distribution and the distance between selected peaks. The second-order statistical analysis was introduced calculating the auto-covariance function to determine the correlation length between heights. We have observed that the photo-irradiation process produces a surface topology more homogeneous and isotropic such as a normal surface. In addition, the polymer surface irradiation can be used as a new methodology to obtain materials optically modified. |
| Keywords: | Atomic force microscopy Surface morphology Conjugated polymers Statistical analysis |
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