Porphyrin-containing glycodendrimers

Roberto Ballardini, Barbara Colonna, M. T. Gandolfi, Stacey A. Kalovidouris, Lukasz Orzel, Françisco M. Raymo, J. Fraser Stoddart*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Two dendrimers, incorporating tetrasubstituted porphyrin units as their cores and, in one case, four perbenzoylated and, in the other case, twelve peracetylated β-D-glucopyranosyl residues at their peripheries, have been synthesized in yields of 39 and 16%, respectively. The deprotection of these dendrimers was achieved quantitatively under Zemplén conditions. The protected and deprotected dendrimers were characterized by liquid secondary-ion or matrix-assisted laser desorption ionization time-of-flight mass spectrometry and by a combination of one- and two-dimensional 1H and 13C NMR spectroscopy. All the glycodendrimers were also characterized by absorption and emission spectroscopy, and lifetime measurements. The most relevant result is that both protected and deprotected dendrimers show two fluorescence lifetime values that are different from the porphyrin model compounds.

Original languageEnglish (US)
Pages (from-to)288-294
Number of pages7
JournalEuropean Journal of Organic Chemistry
Issue number2
DOIs
StatePublished - Jan 1 2003

Keywords

  • Carbohydrates
  • Convergent synthesis
  • Dendrimers
  • Luminescence
  • Porphyrins

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry

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