Journal
ACS OMEGA
Volume 2, Issue 10, Pages 7096-7105Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.7b01058
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Funding
- Global Ph.D. Fellowship [NRF-2014H1A2A1021021]
- Ministry of Trade, Industry, and Energy (MOTIE) through the Research and Development for Regional Industry [R0005303]
- Korea Institute for Advancement of Technology (KIAT) through the Research and Development for Regional Industry [R0005303]
- Radiation Technology R&D program through the NRF - Ministry of Science, ICT & Future Planning [NRF-2017M2A2A6A01019289]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2015R1D1A3A01020192]
- International Joint Technology Development Project through the Ministry of Trade, Industry, and Energy (MI, Korea) [N0002123]
- Korea Institute for KIAT
- Korea Evaluation Institute of Industrial Technology (KEIT) [R0005303, N0002123] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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 approximate to 5% with the maximum emission (lambda(max)) at approximate to 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.
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