Air-Stable PbSe Nanocrystals Passivated by Phosphonic Acids.

  title={Air-Stable PbSe Nanocrystals Passivated by Phosphonic Acids.},
  author={Ju Young Woo and Sooho Lee and Seokwon Lee and Whi Dong Kim and Kangha Lee and Kyungnam Kim and Hye Jin An and Doh C Lee and Sohee Jeong},
  journal={Journal of the American Chemical Society},
  volume={138 3},
We developed a new chemical strategy to enhance the stability of lead selenide nanocrystals (PbSe NCs) against oxidation through the surface passivation by P-O- moieties. In the synthesis of PbSe NCs, tris(diethylamino)phosphine (TDP) selenide (Se) was used as a Se precursor, and the resulting PbSe NCs withstood long-term air exposure while showing nearly no sign of oxidation. Nuclear magnetic resonance (NMR) spectroscopy reveals that TDP derivatives passivate the surface of PbSe NC. Through a… CONTINUE READING