1 Цитирования (Scopus)

Аннотация

The luminescent coarse-, micro-and nanocrystalline europium(III) terephthalate tetrahy-drate (Eu2bdc3‧4H2O) metal-organic frameworks were synthesized by the ultrasound-assisted wet-chemical method. Electron micrographs show that the europium(III) terephthalate microparticles are 7 μm long leaf-like plates. According to the dynamic light scattering technique, the average size of the Eu2bdc3‧4H2O nanoparticles is equal to about 8 ± 2 nm. Thereby, the reported Eu2bdc3‧4H2O nanoparticles are the smallest nanosized rare-earth-based MOF crystals, to the best of our knowledge. The synthesized materials demonstrate red emission due to the5D0–7FJ transitions of Eu3+ upon 250 nm excitation into1ππ* state of the terephthalate ion. Size reduction results in broad-ened emission bands, an increase in the non-radiative rate constants and a decrease in both the quantum efficiency of the5D0 level and Eu3+ and the luminescence quantum yields. Cu2+, Cr3+, and Fe3+ ions efficiently and selectively quench the luminescence of nanocrystalline europium(III) ter-ephthalate, which makes it a prospective material for luminescent probes to monitor these ions in waste and drinking water.

Язык оригиналаанглийский
Номер статьи2448
Число страниц14
ЖурналNanomaterials
Том11
Номер выпуска9
DOI
СостояниеОпубликовано - сен 2021

Предметные области Scopus

  • Химическая технология (все)
  • Материаловедение (все)

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Подробные сведения о темах исследования «Ultrasound-assisted synthesis of luminescent micro-and nanocrystalline eu-based mofs as luminescent probes for heavy metal ions». Вместе они формируют уникальный семантический отпечаток (fingerprint).

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