https://doi.org/10.1140/epjst/e2008-00461-1
Photoacoustic investigation of maghemite-based BSA nanocomposite
1
Fundação Universidade Federal de Rondônia, Departamento de Ciências Exatas e da Natureza, Ji-Paraná RO, 78961-970, Brazil
2
Universidade de Brasília, Instituto de Física, Núcleo de Física Aplicada, Brasília DF, 70910-900, Brazil
3
Departamento de Química, Laboratório Fotobiologia e Fotomedicina Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901 Ribeirão Preto, SP, Brazil
Maghemite-based bovine serum albumin (BSA) nanocomposites have been investigated using photoacustic spectroscopy (PAS). Features in the PAS spectra were analyzed in terms of three bands (band-C, band-S, and band-L). Though the observed PAS peak positions are insensitive to the nanoparticle concentration the PAS peak intensity displays a different behaviour. For band-C the PAS intensity scales almost linearly with the nanoparticle concentration in the hosting template. Nevertheless, it was found that the PAS intensity of band-L scales sub-linearly with the nanoparticle concentration.
© EDP Sciences, Springer-Verlag, 2008
