: a synthetic platform for the development of fluorescent probes for diagnostic and theranostic applications.

Reaction-based fluorescent-probes have proven successful for the visualisation of biological species in various cellular processes. Unfortunately, in order to tailor the design of a fluorescent probe to a specific application ( organelle targeting, material and theranostic applications) often requires extensive synthetic efforts and the synthetic screening of a range of fluorophores to match the required synthetic needs. In this work, we have identified as a unique "plug-and-play" synthetic platform that can be used to develop a range of ONOO responsive fluorescent probes for a variety of applications.