Manganese-phenolic network-coated black phosphorus nanosheets for theranostics combining magnetic resonance/photoacoustic dual-modal imaging and photothermal therapy

Abstract

In this work, we directly coated a layer of tannic acid (TA)-Mn²⁺ chelate networks on black phosphorus (BP) nanosheets (BPNSs) via a simple one-step method. The as-synthesized TA-Mn²⁺ chelate-coated BPNSs (BPNS@TA-Mn) have excellent T₁ MRI contrast enhancement capability, good photoacoustic imaging performance, and high photothermal conversion efficiency, showing great potential in imaging-guided photothermal therapy.