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Updated: Feb 14, 2026

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
Published on: July 21, 2011
Flexible and transparent films consisting of lanthanide complexes for ratiometric luminescence thermometry
Daqing Yang1, Dexi Liu1, Chunkun Tian1
1School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, China.
Abstract:
Herein, a flexible and transparent film consisting Eu3+/Tb3+ lanthanide complexes and poly(methylmethacrylate) was constructed via solution casting method, and further developed as a ratiometric luminescent thermometer with an excellent linear response to temperature variation from 77 to 297 K. The thermometer displays higher photo- and thermostability than corresponding pure complexs. Based on that the emission intensity ratio of 5D4 → 7F5 transition (Tb3+) to 5D0 → 7F2 transition (Eu3+) can be linearly related to the temperature, the resulting thermometer is not only more reliable than single Eu3+(or Tb3+) material based on one emission, and but also has higher sensitivity than other types of luminescent thermometers. This work highlights the practical applications of luminescent films in temperature-sensing fields.
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