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Fibrous Phosphorus Quantum Dots for Cell Imaging
Journal article   Open access   Peer reviewed

Fibrous Phosphorus Quantum Dots for Cell Imaging

Pedro E. M. Amaral, Donald C. Hall, Rahul Pai, Jaroslaw E. Krol, Vibha Kalra, Garth D. Ehrlich and Hai-Feng Ji
ACS applied nano materials, v 3(1), pp 752-759
01 Jan 2020
DOI: https://doi.org/10.1021/acsanm.9b01786
url
https://doi.org/10.1021/acsanm.9b01786View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze),  Open

Abstract

Materials Science Materials Science, Multidisciplinary Nanoscience & Nanotechnology Science & Technology Science & Technology - Other Topics Technology
Fibrous phosphorus is a crystalline structure belonging to the extensive family of phosphorus allotropes. The material's structure consists of 1D tubular layers held together by van der Waals forces and is a semiconductor with an optical band gap of 2.1 eV in its bulk form. With these properties in mind, we developed a facile solution-based method for the fabrication of fibrous phosphorus quantum dots (FPQDs). The FPQDs were prepared by sonicating the material in N-methylpyrrolidone and centrifuging to separate by size. The average size of the quantum dots is 3.8 +/- 0.9 nm with a height profile of 2.7 +/- 1.3 nm. The as-prepared FPQDs show fluorescence properties with emission in the indigo-blue region and a band gap of 3.3 eV and show remarkable stability when exposed to air and light. As a proof-of-concept of its properties, we used FPQDs as a fluorescent label in the bioimaging of human adenocarcinoma cells.

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Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
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