Femtosecond laser synthesized nanohybrid materials for bioapplications

Cs L. Sajti, S. Giorgio, V. Khodorkovsky, W. Marine

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Hybrid nanomaterials were synthesized by adopting femtosecond laser ablation of a ZnO target in pure ethanol. Dye molecules were grafted onto the ZnO nanoparticles by mixing colloidal ZnO-ethanol solution prepared by laser ablation to Tetramethylrhodamine B isothiocyante, or to Rhodamine B solutions. Strongly facetted nanohybrid particles were observed with an average size of 15 nm, by HRTEM measurements. From photoluminescence spectroscopy of the nanohybrids after single and multiphoton excitations, we observed energy transfer from the ZnO nanoparticles towards the attached dye molecules. Moreover, IR excitation spectra of the hybrid nanomaterials reveal the emission of the grafted dye via two photon absorption of the ZnO.

Original languageEnglish
Pages (from-to)8111-8114
Number of pages4
JournalApplied Surface Science
Volume253
Issue number19
DOIs
StatePublished - 31 Jul 2007
Externally publishedYes

Keywords

  • Absorption
  • Hybrid nanomaterials
  • IR excitation spectra

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • General Physics and Astronomy
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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