Polymer hybrid thin films based on rare earth ion-functionalized MOF: photoluminescence tuning and sensing as a thermometer

Abstract

A series of photofunctional polymer hybrid thin films based on rare earth ion functionalized metal organic frameworks (MOFs, 1 for zinc complexes bio-MOF-1 (Zn8(ad)4(BPDC)6O·2Me2NH2) and 2 for rare earth complexes RE(BPDC)(Ad) (BPDC = biphenyl-4,4'-dicarboxylic acid, Ad = adenine) have been prepared via polymerization reaction of ethyl methacrylate (EMA) and 4-vinylpyridine (VPD). The as-obtained hybrid films were characterized by X-ray diffraction, FT-IR, and SEM, especially for the luminescence performance and sensing ability. These hybrid polymer thin films are dense and transparent and display multi-colors, including blue, red and blue-green. Among them, Y0.9Tb0.0999Eu(0.0001)-2 fabricated hybrid thin film displays a white light output. More significantly and interestingly, the Tb0.999Eu(0.001)-2 fabricated hybrid thin film can be used as luminescent ratiometric thermometer based on the energy transfer from Tb(3+) to Eu(3+), whose color will change from blue-green to pink from 100 K to 320 K.

ChemInform Abstract: Lanthanide Organic Framework Luminescent Thermometers

“…Twop apers report processing Ln-coordination polymers nanothermometersa sf ilms. [19,53] With Eu 3 + @UiO-67 100 nm nanoparticles in hand (whichm ay be Tb-doped to produce at hermometer), Yana nd Zhou fabricated aw hite LED by dipcoating at hin film of this materialo nto ac ommercially-available 375 nm UV-LED chip:n anocrystals were dispersed in methanol, followed by ultrasonic treatment until as ignificant portion of the methanol was evaporated and ah omogeneous suspension achieved;t he chip was then dipped into the suspensionfor several seconds and removedf or drying in air. [19] Chem.…”

Multi-Color Luminescence and Sensing of Rare Earth Hybrids by Ionic Exchange Modification

“…luminescence of them [50,51]. We have also studied rare earth ions exchanged bio-MOF-1 and other coordination polymers, whose luminescence can be tuned and further applied to fluorescent sensing [52,53]. Therefore, for these kinds of rare earth coordination polymers with H 2 NMe 2 + , both ion substitution and ion exchange can be used to functionalize them to construct the functional hybrid systems.…”

A Two‐Photon Luminescent Dye‐Loaded Metal–Organic Framework for Physiological Temperature Sensing within Biological Windows

“…In addition, the stability and quantum efficiency were significantly improved after loading into the MOF and, with high temperature resolution, excellent repeatability and low biological toxicity,m easurements with this composite has great potentialt ob ea pplied to physiological temperature sensing in cells or tissues.Almost all physical, chemical and biological processesa re highly temperature dependent,s ot he measurement of the temperature is crucial in both scientific and industrial fields. [1][2][3] Accurate and sensitive thermalm easurements are essential for biological research and biomedical applications as temperature interrelates with the reactivity and dynamics of mostb iomolecules. Abnormal temperature in organisms is an indicator of physiological disorder and is as ign of illness.…”

“…Almost all physical, chemical and biological processesa re highly temperature dependent,s ot he measurement of the temperature is crucial in both scientific and industrial fields. [1][2][3] Accurate and sensitive thermalm easurements are essential for biological research and biomedical applications as temperature interrelates with the reactivity and dynamics of mostb iomolecules. Abnormal temperature in organisms is an indicator of physiological disorder and is as ign of illness.…”