Rhodamine-based lysosome-targeted fluorescence probes: high pH sensitivity and their imaging application in living cells†
Abstract
Two rhodamine-based pH probes (RhP and RhPA) were synthesized via the click reaction. The probes exhibited high pH sensitivity and selectivity with significant fluorescence intensity enhancement. Cell imaging experiments demonstrated RhPA was a good lysosome targeting probe in living cells with low cytotoxicity and excellent photostability.