Confinement of pyridinium hemicyanine dye within an anionic metal-organic framework for two-photon-pumped lasing

Nat Commun. 2013:4:2719. doi: 10.1038/ncomms3719.

Abstract

Two-photon-pumped dye lasers are very important because of their applications in wavelength up-conversion, optical data storage, biological imaging and photodynamic therapy. Such lasers are very difficult to realize in the solid state because of the aggregation-caused quenching. Here we demonstrate a new two-photon-pumped micro-laser by encapsulating the cationic pyridinium hemicyanine dye into an anionic metal-organic framework (MOF). The resultant MOF [symbol: see text] dye composite exhibits significant two-photon fluorescence because of the large absorption cross-section and the encapsulation-enhanced luminescent efficiency of the dye. Furthermore, the well-faceted MOF crystal serves as a natural Fabry-Perot resonance cavity, leading to lasing around 640 nm when pumped with a 1064-nm pulse laser. This strategy not only combines the crystalline benefit of MOFs and luminescent behaviour of organic dyes but also creates a new synergistic two-photon-pumped lasing functionality, opening a new avenue for the future creation of solid-state photonic materials and devices.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Carbocyanines / chemistry*
  • Coloring Agents / chemistry
  • Crystallization
  • Fluorescence
  • Lasers*
  • Light
  • Luminescence
  • Metals / chemistry
  • Microscopy, Confocal
  • Microscopy, Fluorescence
  • Optics and Photonics
  • Photochemotherapy
  • Photons
  • Pyridines / chemistry*

Substances

  • Carbocyanines
  • Coloring Agents
  • Metals
  • Pyridines
  • cyanine dye 1