Background Lanthanides are photoluminescent metals that are characterized by very sharp and narrow emission bands and very long emission lifetimes arising from 4f orbital transitions.  These long lifetimes can be used to essentially eliminate background fluorescence by using time-resolved spectroscopy since lifetimes of fluorophores and fluorescent compounds are on the nanosecond time scales where lanthanides … Continue reading Lumi804-Eu: An Exceptional Lanthanide probe for Time-Resolved Photoluminescence