Synthesis and phototoxicity of polyethylene glycol (PEG) substituted metal-free and metallo-porphyrins: Effect of PEG chain length, coordinated metal, and axial ligand

Ryan E. Mewis, Huguette Savoie, Stephen J. Archibald*, Ross W. Boyle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Treatment of 5,10,15,20-tetra(pentafluorophenyl) porphyrins with polyethylene glycol (PEG) halides and sodium sulfide is a mild and efficient route to water-soluble PEG substituted porphyrins. The method has been used to access a series of free-base and metallated PEG porphyrins, which have been investigated for photodynamic activity against Human Caucasian colon adenocarcinoma (Caco2) cells. Toxicity, in the presence and absence of light, is shown to be affected by the length of the PEG chain, nature of coordinated metal and axial ligand.

Original languageEnglish
Pages (from-to)200-206
Number of pages7
JournalPhotodiagnosis and Photodynamic Therapy
Volume6
Issue number3-4
DOIs
Publication statusPublished - Sept 2009

Keywords

  • Ligand
  • Metal
  • PEG
  • Porphyrin

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