For 10 points, name this property, exhibited by corundum and calcite, which relies on the emission of longer wavelength light from an excited sample and has a longer time-scale than phosphoresence.
',6-diamidino-2-phenylindole, DAPI, shows an increase in this property when bound to DNA. Similarly, tryptophan has this property with an emission peak from 300 nm to 350 nm depending on solvation. This property, with efficiency measured by quantum yield, was named by Stokes in an 1852 paper, which mentions earlier work by Herschel on a quinine sulfate solution that caused light to become "epipolized". Molecular oxygen and iodine can cause quenching, interfering with it, but dynamic quenching can be exploited in FRET. For 10 points, name this property, exhibited by corundum and calcite, which relies on the emission of longer wavelength light from an excited sample and has a longer time-scale than phosphoresence.
',6-diamidino-2-phenylindole, DAPI, shows an increase in this property when bound to DNA.
{Fluorescence}