Colloidal Plasmonic Titanium Nitride Nanoparticles: Properties and Applications

TL;DR

This paper investigates the optical and photothermal properties of colloidal titanium nitride nanoparticles, highlighting their potential for biomedical applications due to their plasmon resonance and surface functionalization capabilities.

Contribution

It provides detailed characterization of titanium nitride nanoparticles' optical properties and demonstrates their high photothermal efficiency and surface passivation advantages.

Findings

Titanium nitride nanoparticles exhibit plasmon resonance in the biological transparency window.

Nanoparticles show high photothermal conversion efficiency.

Surface native oxide enables versatile functionalization.

Abstract

Optical properties of colloidal plasmonic titanium nitride nanoparticles are examined with an eye on their photothermal via transmission electron microscopy and optical transmittance measurements. Single crystal titanium nitride cubic nanoparticles with an average size of 50 nm exhibit plasmon resonance in the biological transparency window. With dimensions optimized for efficient cellular uptake, the nanoparticles demonstrate a high photothermal conversion efficiency. A self-passivating native oxide at the surface of the nanoparticles provides an additional degree of freedom for surface functionalization.