One-Step Synthesis of Mixed Lanthanide Metal–Organic Framework Films for Sensitive Temperature Mapping

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Original languageEnglish
Article number1900336
Journal / PublicationAdvanced Optical Materials
Issue number19
Online published19 Jun 2019
Publication statusPublished - 4 Oct 2019


Mixed lanthanide metal–organic framework (LnMOF) films are directly grown on a quartz substrate through a wet chemical synthesis. Thermometric properties of the LnMOF films originating from temperature dependent emission intensity ratio of Tb/Eu are systematically investigated in the 298–383 K range. At an optimized Tb/Eu concentration ratio of 98.0:2.0, the ratiometric thermometer registers a high relative sensitivity of 16.14% K−1 at 359 K. As the temperature increases from 298 to 383 K, the LnMOF film thermometer also displays a distinct change in emission color from green to red, corresponding to a shift in Commission International de l'Eclairage (CIE) chromaticity coordinates from (0.3882, 0.5271) to (0.5459, 0.4037). The colorimetric property of the LnMOF film thermometer is exploited for real-time temperature mapping with a high sensitivity.

Research Area(s)

  • energy transfer, luminescence thermometry, metal–organic frameworks, thermal mapping, thermometers, thin films