Heavy metal (27) | ![]() |
Lanthanide (13) | ![]() |
Metal (743) | ![]() |
Precious metal (41) | ![]() |
Transition metal (33) | ![]() |
He looked to the oxides of the lanthanides#the row of metals nestled almost at the bottom of the periodic table, from cerium to lutetium.
The lanthanides'empty orbitals are buried beneath shells of other electrons, which should make them much less attractive to water s oxygen,
he and his colleagues tested the idea by making small ceramic discs of the oxides of all the lanthanides except radioactive promethium.
And cerium oxide#the cheapest and most widely available of the lanthanide oxides#remained hydrophobic even after a two-hour sauna at 1, 000#C,
Indeed, most chemists would have failed to spot the hydrophobicity of the lanthanide oxides, Cheung speculates,
#Lanthanide-organic framework nanothermometers prepared by spray-drying A work in Advanced Functional Materials shows how spray-drying prepared MOF nanoparticles containing lanthanide metals may be used as nanothermometers operative over a wide range of temperatures
the first lanthanide-organic framework prepared by the spray-drying method. This system is the most sensitive cryogenic nanothermometer reported so far
"Bimetallic lanthanide complexes that display a ratiometric response to oxygen concentration"in the periodical Chemical sciences and"Spectrally resolved confocal microscopy using lanthanide centred near-IR emission"in Chemical Communications.
so called lanthanides. One lanthanide, europium, emits a constant red signal. The other, terbium, emits a green signal that increases with diminishing oxygen concentrations.
Most physicians should be able to read the oxygen concentration with the naked eye, explains Thomas Just Sørensen."
The material comprises a metal from the lanthanide group, also known as rare-earth elements, and a widely used polymer called polyethylene glycol, or PEG.
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