Physico-chemical properties of β-diketone phosphorus-containing dendrimers

Authors

  • Viktoriia Starova Taras Shevchenko National University of Kyiv
  • Mykhailo Ianchuk 1. Taras Shevchenko National University of Kyiv, 64, Volodymyrs'ka St., 01601 Kyiv,Ukraine 2. Laboratoire de Chimie de Coordination UPR 8241 CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France 3. Université de Toulouse; UPS, INPT; LCC; F-31077 Toulouse, France
  • Olga Zaporozhets Taras Shevchenko National University of Kyiv
  • Anne-Marie Caminade 1. Laboratoire de Chimie de Coordination UPR 8241 CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France 2. Université de Toulouse; UPS, INPT; LCC; F-31077 Toulouse, France

DOI:

https://doi.org/10.17721/fujcV5I2P128-135

Keywords:

dendrimer, β-diketone, fluorescence, interaction with organic substrates

Abstract

Protolytic, absorbance and fluorescence properties of β-diketone phosphorus-containing dendrimers based on cyclotriphosphazene core were studied. Dendrimer solutions in acetone are characterized by intense absorbance band at ≈ 340 nm (ε340≈ 8.5·104L/mol·сm) and fluorescence band with maximum at 440 nm. Position of these maxima does not change in various solvents, unlike the bands of monomer β-diketone. It was found that dendrimer aggregation is accompanied by appearance of a second absorbance band ε400≈ 4.5·103L/mol·сm, by red shift of emission spectra ∆λ ≈ 10 nm and also by decrease in surface tension of acetone solution. Ability of dendrimer aggregates to solubilize organic substrates was observed with the fluorescent indicator acridine.

Author Biographies

Viktoriia Starova, Taras Shevchenko National University of Kyiv

PhD., analytical chemistry department

Mykhailo Ianchuk, 1. Taras Shevchenko National University of Kyiv, 64, Volodymyrs'ka St., 01601 Kyiv,Ukraine 2. Laboratoire de Chimie de Coordination UPR 8241 CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France 3. Université de Toulouse; UPS, INPT; LCC; F-31077 Toulouse, France

PhD  student

Olga Zaporozhets, Taras Shevchenko National University of Kyiv

Dr., Head of analytical chemistry department, chemical faculty

Anne-Marie Caminade, 1. Laboratoire de Chimie de Coordination UPR 8241 CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France 2. Université de Toulouse; UPS, INPT; LCC; F-31077 Toulouse, France

Dr., Directeur de Recherche CNRS (DR1), Head of the "Dendrimer and Heterochemistry" group Laboratoire de Chimie de Coordination du CNRS 

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Published

2017-12-30

Issue

Vol. 5 No. 2 (2017): Proceedings of the IX International scientific conference “Kyiv-Toulouse”

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