Abstract
The preparation of blue-emitting black phosphorus quantum dots (BPQDs) is based on the liquid-phase exfoliation of bulk BP. We report the synthesis of soluble BPQDs showing a strong visible blue-light emission. Highly fluorescent (photoluminescence quantum yield of ~5% with the maximum emission (λmax) at ~437 nm) and dispersible BPQDs in various organic solvents are first prepared by simple ultrasonication of BP crystals in chloroform in the ambient atmosphere. Furthermore, simple mussel-inspired surface functionalization of BPQDs with catechol-grafted poly(ethylene glycol) in basic buffer afforded water-soluble blue-emitting BPQDs showing long-term fluorescence stability, very low cytotoxicity, and excellent fluorescence live cell imaging capability.
| Original language | English |
|---|---|
| Pages (from-to) | 7096-7105 |
| Number of pages | 10 |
| Journal | ACS Omega |
| Volume | 2 |
| Issue number | 10 |
| DOIs | |
| State | Published - 31 Oct 2017 |
Bibliographical note
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