Effect of CdSe nanoparticle addition on nanostructuring of PS-b-P4VP copolymer via solvent vapour exposure
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Fecha
2013-10-28Autor
Etxeberria Altuna, Haritz
Fernández Salvador, Raquel
Zalakain, Iñaki
Mondragón Egaña, Iñaki Bixintxo
Eceiza Mendiguren, María Azanzazu
Kortaberria Altzerreka, Galder
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Journal of Colloid and Interface Science 416 : 25-29 (2014)
Resumen
The surface morphology of poly(styrene-b-4 vinyl pyridine) (PS-b-P4VP) diblock copolymer thin films
after solvent vapor annealing has been studied. Morphological features can be switched upon exposure
to vapors of a solvent selective for one of the blocks. Self-assembled nanostructures such as hexagonal
or striped morphologies were obtained varying vapor exposure time. In addition, the effect of the presence of CdSe nanoparticles located in the P4VP block on obtained nanostructures was analyzed. Atomic force microscopy (AFM) was used for morphological characterization of the block copolymer and the nanocomposites. AFM images showed that nanostructuring was different depending on the amount of CdSe nanoparticles, due to the decrease in P4VP chain mobility.