Highly Efficient Visible Blue-Emitting Black Phosphorus Quantum Dot: Mussel-Inspired Surface Functionalization for Bioapplications | Zendy

Miyeon Lee | Zendy; Young Ho Park | Zendy; Eun Bi Kang | Zendy; Ari Chae | Zendy; Yujin Choi | Zendy; Seongho Jo | Zendy; Yu Jin Kim | Zendy; SooJin Park | Zendy; Byung-Gak Min | Zendy; Tae Kyu An | Zendy; Jihoon Lee | Zendy; SuIl In | Zendy; Sang Youl Kim | Zendy; Sung Young Park | Zendy; Insik In | Zendy

Open Access

Highly Efficient Visible Blue-Emitting Black Phosphorus Quantum Dot: Mussel-Inspired Surface Functionalization for Bioapplications

Author(s) -

Miyeon Lee,

Young Ho Park,

Eun Bi Kang,

Ari Chae,

Yujin Choi,

Seongho Jo,

Yu Jin Kim,

SooJin Park,

Byung-Gak Min,

Tae Kyu An,

Jihoon Lee,

SuIl In,

Sang Youl Kim,

Sung Young Park,

Insik In

Publication year - 2017

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.7b01058

Subject(s) - surface modification , photoluminescence , quantum dot , exfoliation joint , materials science , fluorescence , quantum yield , ethylene glycol , sonication , photochemistry , chemical engineering , nanotechnology , chemistry , optoelectronics , organic chemistry , optics , graphene , physics , engineering

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 (λ max ) 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.

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