Title |
Thermo‐Chromium: A Contactless Optical Molecular Thermometer
|
---|---|
Published in |
Chemistry - A European Journal, May 2017
|
DOI | 10.1002/chem.201701726 |
Pubmed ID | |
Authors |
Sven Otto, Norman Scholz, Thomas Behnke, Ute Resch‐Genger, Katja Heinze |
Abstract |
The unparalleled excited state potential energy landscape of the chromium(III)-based dye [1]3+ ([Cr(ddpd)2]3+; ddpd = N,N'-dimethyl-N,N'-dipyridin-2-yl-pyridin-2,6-diamine) enables a strong dual emission in the near infrared. The temperature dependence of this dual emission allows for the use of [1]3+ as an unprecedented molecular ratiometric thermometer in the 210 - 358 K temperature range in organic and in aqueous media. Incorporation of [1]3+ in biocompatible nanocarriers like 100 nm-sized polystyrene nanoparticles and solutol micelles provides nanodimensional thermometers operating under physiological conditions. |
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