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Catalytic Chiral Photochemistry Sensitized by Chiral Hosts-Grafted Upconverted Nanoparticles.

Ming RaoChunying FanJiecheng JiWenting LiangLingling WeiDongjing ZhangZhiqiang YanWuanhua WuCheng Yang
Published in: ACS applied materials & interfaces (2022)
Singlet chiral photocatalysis is highly challenging. Herein, we report fluorescence resonance energy transfer (FRET)-based chiral photocatalysis with γ-cyclodextrin (CD)-grafted lanthanide-doped upconverted nanoparticles (UCNP). The CD-modified UCNP strongly emits in the UV wavelength region upon excitation with a 980 nm laser, which selectively sensitizes the photosubstrates complexed by CD on the surface of UCNP through FRET. Therefore, enantiodifferentiating photocyclodimerization of anthracene or naphthalene derivatives sensitized by the CD-modified UCNP gives photoproducts in good enantioselectivity even in the presence of a catalytic amount of CD-modified UCNP. Moreover, the photocatalysts are readily separated and could be reused for at least six cycles without decreasing the enantioselectivity.
Keyphrases
  • energy transfer
  • quantum dots
  • single molecule
  • capillary electrophoresis
  • ionic liquid
  • nk cells
  • visible light
  • photodynamic therapy
  • mass spectrometry
  • signaling pathway