Photon upconversion lithography: patterning of biomaterials using near-infrared light

Adv Mater. 2015 Apr 1;27(13):2203-6. doi: 10.1002/adma.201405933. Epub 2015 Feb 18.

Abstract

Photon upconversion lithography is demonstrated for the patterning of proteins using near-infrared light. Proteins and an upconverting-nanoparticle-decorated substrate are linked via blue-light-cleavable Ru complexes. The substrate is irradiated using near-infrared light with a photomask. In the exposed areas, upconverting nanoparticles convert the near-infrared light into blue light, which induces cleavage of the Ru complexes and release of the proteins.

Keywords: nanoparticles; photocages; photopatterning; protein adsorption; upconversion.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biocompatible Materials / chemistry*
  • Infrared Rays*
  • Models, Molecular
  • Organometallic Compounds / chemistry
  • Photochemical Processes*
  • Photons*
  • Printing*
  • Protein Conformation
  • Proteins / chemistry
  • Ruthenium / chemistry

Substances

  • Biocompatible Materials
  • Organometallic Compounds
  • Proteins
  • Ruthenium