14 research outputs found
Non-wettable, Oxidation-Stable, Brightly Luminescent, Perfluorodecyl-Capped Silicon Nanocrystal Film
35.0 When Prevention Is Not Enough: Treatment and Empowerment of Pregnant Teens and Teen Moms
Psychosocial Functioning, Familiality, and Psychiatric Comorbidity in Bipolar Youth With and Without Psychotic Features
Non-wettable, oxidation-stable, brightly luminescent, perfluorodecyl-capped silicon nanocrystal film
Here we describe for the first time the synthesis of colloidally stable, brightly luminescent perfluorodecyl-capped silicon nanocrystals and compare the properties of solutions and films made from them with those of their perhydrodecyl-capped relatives. The perfluorodecyl capping group compared to the perhydrodecyl capping group yields superior hydrophobicity and much greater resistance to air oxidation, the enhanced electron-withdrawing character induces blue shifts in the wavelength of photoluminescence, and the lower-frequency carbon-fluorine stretching modes disfavor non-radiative relaxation pathways and boost the absolute photoluminescence quantum yield. Together these attributes bode well for advanced materials and biomedical applications founded upon perfluorodecyl-protected silicon nanocrystals