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Engineering the energy gap of black phosphorene quantum dots by surface modification for efficient chemiluminescence.

In this work, NH2-functionalized BPQDs (N-BPQDs) were purposely synthesized by using an ultrasound exfoliation technique combined with solvothermal treatment. The surface modification of BPQDs allowed engineering the energy gap and accelerating the electron transfer between the electron/hole donors and N-BPQDs, which played an important role in producing efficient chemiluminescence (CL) with the assistance of persulfate (K2S2O8). This work sheds new light on revealing the relationship between the BPQD structures and their optical properties.