Polydopamine-functionalized black phosphorus quantum dots for cancer theranostics

The rapid degradation of black phosphorus (BP) with oxygen and moisture causes the innate instability that is the Achilles’ heel of BP, a facile surface passivation strategy is developed to prepare polydopamine coated BP quantum dots (denoted as BP@PDA) with excellent stability and high photothermal conversion efficiency for cancer theranostics.