Novel fluorescent security marker. Part I: morphological and optical properties of 2-amino-6-ethoxy-4-[4-(4- morpholinyl)phenyl]-3,5-pyridinedicarbonitrile nanoparticles

Marco De Spirito, Mauro Missori, M. Missori, L. Ferrari, S. Selci, A. Gnoli, F. R. Bertani, A. S. Girgis, H. El-Saied, A. H. Basta

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

6 Citazioni (Scopus)

Abstract

Newly synthesized fluorescent nanoparti- cles of 2-amino-6-ethoxy-4-[4-(4-morpholinyl)phenyl]-3, 5-pyridinedicarbonitrile have been developed and characterized for possible applications as security marker in paper documents. Nanoparticles have been prepared by reprecipitation in water under sonication. The size and the shape of these nanoparticles, charac- terized by light scattering and atomic force micros- copy, have been found to be highly dependent on sonication power. Typical sizes range from tens to hundreds of nanometers. Furthermore, a remarkable increase in the fluorescence yield has been observed as nanoparticles sizes decrease. Finally, all of the above features, together with the striking stability of optical and mechanical properties over the course of months, allow for straightforward applications that rely on strong and stable fluorescence such as marking impor- tant or valuable documents.
Lingua originaleEnglish
pagine (da-a)649-660
Numero di pagine12
RivistaJournal of Nanoparticle Research
DOI
Stato di pubblicazionePubblicato - 2012

Keywords

  • Pyridine derivatives
  • fluorescent nanoparticles

Fingerprint Entra nei temi di ricerca di 'Novel fluorescent security marker. Part I: morphological and optical properties of 2-amino-6-ethoxy-4-[4-(4- morpholinyl)phenyl]-3,5-pyridinedicarbonitrile nanoparticles'. Insieme formano una fingerprint unica.

Cita questo