Probing the internal environment of PVP networks generated by irradiation with different sources

Maurizio Leone, Giuseppe Spadaro, Clelia Dispenza, Vito Foderà, Daniela Giacomazza, Maurizio Leone

Risultato della ricerca: Articlepeer review

23 Citazioni (Scopus)


Poly(N-vinyl-2-pyrrolidone) (PVP) hydrogelshave been synthesised from the aqueous solutions of the same linear polymer by two different radiation sources: electron beams and UV rays. The present investigation couples conventional hydrogel characterisation techniques with the study of the partition equilibria, fluorescencebehaviour and release of two different molecular probes,1-anilino-8-naphthalene sulphonate (ANS) and ThioflavinT (ThT). The two probes have comparable molecular weight and different structural and optical properties. The ‘chemical’ networks produced upon irradiation in different experimental conditions presented quite distinctivemechanical spectra, yielded to different porous solids upon freeze-drying and showed specific rehydration ratios when ‘equilibrated’ in water. More interestingly, they offered ‘hydrophobic pockets’ to host the ANS molecules in a way that the probe is completely occluded from water, making it fluoresce. Conversely, the generated PVP networks did not show any specific affinity towards the hydrophilic ThT that was only barely untaken.
Lingua originaleEnglish
pagine (da-a)969-980
Numero di pagine11
RivistaColloid and Polymer Science
Stato di pubblicazionePublished - 2010

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.1600.1606???
  • ???subjectarea.asjc.2500.2507???
  • ???subjectarea.asjc.1500.1505???
  • ???subjectarea.asjc.2500.2505???


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