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Article
Family of BODIPY Photocages Cleaved by Single Photons of Visible/Near-Infrared Light
Journal of the American Chemical Society
  • Julie A. Peterson, Iowa State University
  • Chamari Wijesooriya, Iowa State University
  • Elizabeth J. Gehrmann, Iowa State University
  • Kaitlyn M. Mahoney, Iowa State University
  • Pratik P. Goswami, Iowa State University
  • Toshia Albright, Iowa State University
  • Aleem Syed, Iowa State University
  • Andrew S. Dutton, Iowa State University
  • Emily A. Smith, Iowa State University
  • Arthur Winter, Iowa State University
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
5-18-2018
DOI
10.1021/jacs.8b04040
Abstract

Photocages are light-sensitive chemical protecting groups that provide external control over when, where, and how much of a biological substrate is activated in cells using targeted light irradiation. Regrettably, most popular photocages (e.g., o-nitrobenzyl groups) absorb cell-damaging ultraviolet wavelengths. A challenge with achieving longer wavelength bond-breaking photochemistry is that long-wavelength-absorbing chromophores have shorter excited-state lifetimes and diminished excited-state energies. However, here we report the synthesis of a family of BODIPY-derived photocages with tunable absorptions across the visible/near-infrared that release chemical cargo under irradiation. Derivatives with appended styryl groups feature absorptions above 700 nm, yielding photocages cleaved with the highest known wavelengths of light via a direct single-photon-release mechanism. Photorelease with red light is demonstrated in living HeLa cells, Drosophila S2 cells, and bovine GM07373 cells upon ∼5 min irradiation. No cytotoxicity is observed at 20 μM photocage concentration using the trypan blue exclusion assay. Improved B-alkylated derivatives feature improved quantum efficiencies of photorelease ∼20-fold larger, on par with the popular o-nitrobenzyl photocages (εΦ = 50–100 M–1 cm–1), but absorbing red/near-IR light in the biological window instead of UV light.

Comments

This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in the Journal of the American Chemical Society, copyright © American Chemical Society after peer review. To access the final edited and published work see DOI: 10.1021/jacs.8b04040. Posted with permission.

Copyright Owner
American Chemical Society
Language
en
File Format
application/pdf
Citation Information
Julie A. Peterson, Chamari Wijesooriya, Elizabeth J. Gehrmann, Kaitlyn M. Mahoney, et al.. "Family of BODIPY Photocages Cleaved by Single Photons of Visible/Near-Infrared Light" Journal of the American Chemical Society Vol. 140 Iss. 23 (2018) p. 7343 - 7346
Available at: http://works.bepress.com/arthur_winter/36/