Pore-entrapped fluorescein molecules act as antenna to sensitize the NIR emission of Yb3+ cations MOF structure.

BackgroundReducing COVID-19 transmission relies on controlling droplet and aerosol spread. Fluorescein staining reveals microscopic droplets.AimTo compare the spread in non-laminar laminar air flow operating theatres.MethodsA ‘cough-generator’ was fixed to a theatre trolley at 45°. Fluorescein-stained ‘secretions’ were projected series of calibrated targets. These photographed under UV light ‘s...