Synthesis, photophysical studies and 1O2 generation of ruthenium phthalocyanine dendrimers

Francesca Setaro, Rubén Ruiz-González, Santi Nonell, Uwe Hahn, Tomás Torres

Research output: Indexed journal article Articlepeer-review

6 Citations (Scopus)

Abstract

A series of ruthenium phthalocyanine centered dendrimers has been prepared with up to 32 ethyl ester end groups. The photophysical properties have been assessed in THF to reveal a correlation between the degree of dendritic environment and the ability to generate singlet oxygen. In the attempt to prepare the correponding highly water-soluble polyelectrolyte dendrimers upon saponification we observed the cleavage of the central esters moieties adjacent to the pyridine unit in all cases. However, despite the lack of shielding by a growing branched shell surrounding the photoactive center, the obtained tetracarboxylate-terminated ruthenium phthalocyanine derivative was still able to generate singlet oxygen in aqueous medium.

Original languageEnglish
Pages (from-to)378-387
Number of pages10
JournalJournal of Porphyrins and Phthalocyanines
Volume20
Issue number1-4
DOIs
Publication statusPublished - 1 Jan 2016

Keywords

  • dendrimers
  • photosensitization
  • ruthenium phthalocyanines
  • singlet oxygen

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