Biofunctional few-layer metal dichalcogenides and related heterostructures produced by direct aqueous exfoliation using phospholipids

We report a novel, inexpensive and green method for preparing aqueous dispersions of various biofunctional transition-metal dichalcogenides (MoS 2 , WS 2 , TiS 2 and MoSe 2 ) and their related heterostructures directly via ultrasonic exfoliation mediated by the presence of phospholipids. The dispers...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2019-11, Vol.9 (63), p.3761-3766
Main Authors: Williams, Aled T, Donno, Roberto, Tirelli, Nicola, Dryfe, Robert A. W
Format: Article
Language:English
Subjects:
Chalcogenides
Chemistry
Dispersions
Exfoliation
Flakes
Heterostructures
Phospholipids
Photoelectrons
Photoluminescence
Transition metal compounds
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report a novel, inexpensive and green method for preparing aqueous dispersions of various biofunctional transition-metal dichalcogenides (MoS 2 , WS 2 , TiS 2 and MoSe 2 ) and their related heterostructures directly via ultrasonic exfoliation mediated by the presence of phospholipids. The dispersions predominantly consist of few-layer flakes coated with 1,2-dioleoyl- sn-glycero -3-phosphocholine (DOPC), as confirmed by Raman, photoluminescence and X-ray photoelectron spectroscopies. The phospholipid coating renders the flakes biofunctional, which coupled with the unique properties of transition-metal dichalcogenides and their heterostructures, suggests this method will have great potential in biological applications. We report a method for preparing aqueous dispersions of biofunctional transition-metal dichalcogenides (MoS 2 , WS 2 , TiS 2 and MoSe 2 ) and their related heterostructures directly via ultrasonic exfoliation mediated by the presence of phospholipids.
ISSN:2046-2069
2046-2069
DOI:10.1039/c9ra07764b