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Highly efficient visible blue-emitting black phosphorus quantum dot: Mussel-inspired surface functionalization for bioapplications

Title
Highly efficient visible blue-emitting black phosphorus quantum dot: Mussel-inspired surface functionalization for bioapplications
Authors
Lee, Mi YeonPark, Young HoKang, Eun BiChae, A RiChoi, Yu JinJo, Seong HoKim, Yu JinPark, Soo JinMin, Byung GakAn, Tae KyuLee, Ji HoonIn, Su IlKim, Sang YoulPark, Sung YoungIn, In Sik
DGIST Authors
In, Su Il
Issue Date
2017
Citation
ACS Omega, 2(10), 7096-7105
Type
Article
Article Type
Article
ISSN
2470-1343
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. © 2017 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/5663
DOI
10.1021/acsomega.7b01058
Publisher
American Chemical Society
Related Researcher
  • Author In, Su Il Green and Renewable Energy for Endless Nature(GREEN) Lab
  • Research Interests CO2 conversion to hydrocarbon fuels; Water splitting for hydrogen generation; Quantum dot devices; Dye sensitized solar cells; Environmental remediation; Synthesis of functional nanomaterials; CO2 연료전환; 수소생산을 위한 광전기화학적 물분해; 양자점 태양전지; 염료감응 태양전지; 공해물질 저감연구; 기능성 나노소재 개발
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Collection:
Energy Science and EngineeringGreen and Renewable Energy for Endless Nature(GREEN) Lab1. Journal Articles


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