Novel Nanocomposites for Luminescent Thermometry with Two Different Modalities

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2024 Mar 28

PMID 38542986

Authors

Masfer Alkahtani

Yahya A Alzahrani

Abdulaziz Alromaeh

Philip Hemmer

Affiliations

Soon will be listed here.

Abstract

In this work, we successfully integrated fluorescent nanodiamonds (FNDs) and lanthanide ion-doped upconversion nanoparticles (UCNPs) in a nanocomposite structure for simultaneous optical temperature sensing. The effective integration of FND and UCNP shells was confirmed by employing high-resolution TEM imaging, X-ray diffraction, and dual-excitation optical spectroscopy. Furthermore, the synthesized ND@UCNP nanocomposites were tested by making simultaneous optical temperature measurements, and the detected temperatures showed excellent agreement within their sensitivity limit. The simultaneous measurement of temperature using two different modalities having different sensing physics but with the same composite nanoparticles inside is expected to greatly improve the confidence of nanoscale temperature measurements. This should resolve some of the controversy surrounding nanoscale temperature measurements in biological applications.

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