Issue 24, 2016

A new generation of highly sensitive luminescent thermometers operating in the optical window of biological tissues

Abstract

A new type of luminescent thermometer based on highly temperature dependent d–d Cr3+ transitions related to barely temperature dependent f–f Nd3+ transitions is reported for the first time, showing exceptionally high sensitivity and shifting current paradigms behind the physics and chemistry of luminescent nanothermometers. The highest sensitivity in the physiological temperature range was found for LiLaP4O12:1%Cr,10%Nd and reached 4.89%/°C – three times, up to over one order of magnitude higher than most luminescent thermometers reported to date. Moreover, the brightness of such probes based on Cr ions was around one order of magnitude higher than the Stokes Nd emission. Even higher sensitivities, up to 30%/°C, were found above 200 °C, indicating the importance of a rational approach to the design of chemical composition and smart involvement of photophysical processes, to significantly enhance the properties of luminescent thermometers. The thermal dependence of the luminescence intensity ratio from the two ions was investigated for different Cr3+ and Nd3+ ion concentrations, which actually had no severe impact, either on the LIR or on the sensitivity of such luminescent thermometers.

Graphical abstract: A new generation of highly sensitive luminescent thermometers operating in the optical window of biological tissues

Supplementary files

Article information

Article type
Communication
Submitted
12 Apr. 2016
Accepted
12 Maijs 2016
First published
13 Maijs 2016

J. Mater. Chem. C, 2016,4, 5559-5563

A new generation of highly sensitive luminescent thermometers operating in the optical window of biological tissues

L. Marciniak, A. Bednarkiewicz, D. Kowalska and W. Strek, J. Mater. Chem. C, 2016, 4, 5559 DOI: 10.1039/C6TC01484D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements