DOI

  • Leonid Yu Mironov
  • Peter S. Parfenov
  • Anna V. Shurukhina
  • Yaroslav I. Lebedev
  • Anastasiya A. Metlenko

Dye-doped nanoparticles of Eu3+ chelate complexes with naphtoyltrifluoroacetone and 1,10-phenanthroline were synthesized using two different reprecipitation techniques. The nanoparticles were characterized by atomic force microscopy, absorption spectroscopy, steady-state, and time-resolved fluorescence spectroscopy. Fluorescent spectroscopy of chelate nanoparticles doped with Oxazine 170 and Nile blue dyes indicates that a single dye molecule efficiently quenches luminescence of more than a hundred chelates. The Eu3+ chelates have a significantly longer luminescence lifetime than organic dyes, which leads to the appearance of delayed dyes fluorescence with microsecond lifetimes. The fluorescence brightness of dye-doped chelate nanoparticles was determined to be 50 times higher than that of a single Rhodamine 6G molecule. The combination of high fluorescence brightness and long fluorescence lifetime of the dye-doped chelate nanoparticles is promising for time-gated applications. (Graph Presented).

Язык оригиналаанглийский
Страницы (с-по)19958-19965
Число страниц8
ЖурналJournal of Physical Chemistry C
Том121
Номер выпуска36
DOI
СостояниеОпубликовано - 14 сен 2017

    Предметные области Scopus

  • Электроника, оптика и магнитные материалы
  • Энергия (все)
  • Физическая и теоретическая химия
  • Поверхности, слои и пленки

ID: 36681434