Magnetic Control of the Manganese Photoluminescence in Fe3O4/l-Cys ZnS:Mn Nanocomposites | JoVE Visualize

Magnetic Control of the Manganese Photoluminescence in Fe₃O₄/l-Cys ZnS:Mn Nanocomposites

Shyam Sutariya¹, Mohammed Bsatee², Olesia Gololobova³

¹Neuroscience Program, Department of Psychology, East Carolina University, Rawl Building, Greenville, North Carolina 27858, United States.

ACS Omega|March 29, 2021

View abstract on PubMed

Summary

We explored magnetic control of manganese (Mn) photoluminescence in iron oxide/l-cysteine-capped zinc sulfide nanocomposites. This bifunctional material shows potential for theranostics and quantum computing applications.

Area of Science:

Materials Science
Nanotechnology
Quantum Physics

Background:

Bifunctional nanocomposites combining magnetic and luminescent properties are crucial for advanced applications.
Iron oxide/l-cysteine-capped zinc sulfide (Fe3O4/l-cys ZnS:Mn) nanocomposites offer a unique platform for exploring magnetoluminescent coupling.

Purpose of the Study:

To investigate the magnetic control of photoluminescence (PL) in Fe3O4/l-cys ZnS:Mn nanocomposites.
To characterize the physicochemical, morphological, and magnetic properties of the synthesized material.
To understand the underlying mechanisms of magnetoluminescent coupling for potential applications.

Main Methods:

Synthesis of Fe3O4/l-cys ZnS:Mn nanocomposites via wet chemical deposition.
Characterization using X-ray diffraction (XRD) and electron microscopy.
Temperature- and field-dependent photoluminescence intensity studies, alongside vibrating sample magnetometry.

Main Results:

XRD confirmed high crystalline quality and purity of the semiconducting composite material.
Electron microscopy showed clean, smooth nanoparticles (15-30 nm) without amorphous phases.
Superparamagnetic behavior and optical response confirmed the bifunctional nature.
Magnetoluminescent coupling observed as PL suppression (5-10%) from 10 K to room temperature.

Conclusions:

The study demonstrates effective magnetic control over Mn photoluminescence in Fe3O4/l-cys ZnS:Mn nanocomposites.
PL suppression is attributed to restricted energy transfer to Mn orbitals due to magnetic ordering and Jahn-Teller distortions.
These biocompatible nanocomposites show promise as theranostic agents and quantum computational elements, advancing diagnostics and drug delivery.