Novel insights into fluorescent ‘dark states’ illuminate ways forward for improved imaging
(MEMPHIS, Tenn. – June 14, 2024) Scientists at St. Jude Children’s Research Hospital today announced a way to improve molecular scale distance measurements using single-molecule fluorescence resonance energy transfer (smFRET). smFRET quantifies the excitation and emission properties of chemicals called fluorophores.
When an excited electron in the fluorophore relaxes, it emits light after a delay, causing the molecule to glow (fluoresce). However, fluorophores don’t always fluoresce after excitation. Instead, through quantum mechanical ...








