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Douglas-Gallardo OA, Gomez CG, Macchione MA, et al. Morphological Evolution of Noble Metal Nanoparticles in Chloroform: Mechanism of Switching on/off by Protic Species. RSC Adv. 2015;5(122):100488-100497doi: 10.1039/C5RA17529A.
Douglas-Gallardo, O. A., Gomez, C. G., Macchione, M. A., Cometto, F. P., Coronado, E. A., Macagno, V. A., & Pérez, M. A. (2015). Morphological Evolution of Noble Metal Nanoparticles in Chloroform: Mechanism of Switching on/off by Protic Species. RSC advances, 5(122), 100488-100497. https://doi.org/10.1039/C5RA17529A
Douglas-Gallardo, O A, et al. "Morphological Evolution of Noble Metal Nanoparticles in Chloroform: Mechanism of Switching on/off by Protic Species." RSC advances vol. 5,122 (2015): 100488-100497. doi: https://doi.org/10.1039/C5RA17529A
Douglas-Gallardo OA, Gomez CG, Macchione MA, Cometto FP, Coronado EA, Macagno VA, Pérez MA. Morphological Evolution of Noble Metal Nanoparticles in Chloroform: Mechanism of Switching on/off by Protic Species. RSC Adv. 2015;5(122):100488-100497. doi: 10.1039/C5RA17529A. PMID: 26889378; PMCID: PMC4754205.
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RSC Adv. 2015;5(122):100488-100497. doi: 10.1039/C5RA17529A.

Morphological Evolution of Noble Metal Nanoparticles in Chloroform: Mechanism of Switching on/off by Protic Species.

RSC advances

O A Douglas-Gallardo, C G Gomez, M A Macchione, F P Cometto, E A Coronado, V A Macagno, M A Pérez

Affiliations

  1. INFIQC - Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria. Pabellón Argentina, Ala 1, 2 piso, Haya de la Torre. 5000 Córdoba, Argentina.
  2. Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria. Edificio de Ciencias II, Haya de la Torre y Medina Allende, 5000 Córdoba, Argentina.

PMID: 26889378 PMCID: PMC4754205 DOI: 10.1039/C5RA17529A

Abstract

The morphological stability/morphological reshaping of noble metal nanoparticles are studied experimentally in order to unravel the chemical mechanisms lying beneath. Gold and silver nanoparticles (AuNPs and AgNPs, respectively) formed in chloroformic environment are used, as model synthetic systems, to study phenomena of morphological change. The morphological evolution of NPs that follows their formation, is characterized by spectroscopy (UV-Visible, Raman and FTIR) and TEM (Transmission Electron Microscopy). The change of NP morphology involves the increase of the average NP size and the broadening of size distribution, in a close resemblance with the effect characteristically obtained from the Ostwald ripening. The effect of the poor solvating properties of chloroform in stabilizing small charged species (H

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