Tb(III) complexes with nonyl-substituted calix[4]arenes as building blocks of hydrophilic luminescent mixed polydiacetylene-based aggregates

Julia Elistratova, Bulat Akhmadeev, Rustem Zairov, Alexey Dovzhenko, Sergey Podyachev, Svetlana Sudakova, Viktor Syakaev, Raz Jelinek, Sofia Kolusheva, Asiya Mustafina

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The present work for the first time introduces PDA-based vesicles as convenient supporters of luminescent water insoluble Tb3+ complexes. The specific cyclophanic structure of the ligands, where upper and lower calix[4]arene rims are decorated by nonyl- and chelating groups correspondingly provides both complex formation with Tb3+ ions with the coordination of the latter via two 1,3-diketonate groups and self- or mixed aggregation of the complexes. The conditions of the self-aggregation of the Tb3+ complexes are revealed, although the self-aggregates are unstable being converted into the nanosized precipitates which tend to further aggregation and phase separation. The complexes exhibit Tb(III)-centered luminescence which tends to change in time following the phase separation processes. The embedding of the Tb3+ complexes into the PDA-based vesicles results in the mixed aggregates with significant Tb(III)-centered luminescence and significant colloidal stability. The latter arises from high negative electrokinetic potential values due to exterior carboxylic/carboxylate groups of the PDA vesicles.

Original languageEnglish
Pages (from-to)463-470
Number of pages8
JournalJournal of Molecular Liquids
Volume268
DOIs
StatePublished - 15 Oct 2018

Keywords

  • Calix[4]arene
  • Luminescence
  • PDA vesicles
  • Self-aggregates
  • Tb complexes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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