Boltzmann-Distribution-Driven Cathodoluminescence Thermometry in Transmission Electron Microscopy.

Nanothermometry in transmission electron microscopy (TEM) is useful for comprehending the functioning mechanisms of the heterogeneous matter through real-time observations. Herein, we introduce a Boltzmann-distribution-driven cathodoluminescence (CL) nanothermometry for local temperature probing in TEM. The population distribution across the close-lying Stark sublevels of dysprosium ions in an yttrium vanadate matrix follows the Boltzmann distribution, enabling the use of the CL-intensity ratio as a thermometry over a wide temperature range of 103-435 K with a relative sensitivity exceeding 3% K and precision of ±2%.

Smart photopharmacological agents: LaVO:Eu@vinyl phosphonate combining luminescence imaging and photoswitchable butyrylcholinesterase inhibition.

The combination of photoswitchability and bioactivity in one compound provides interesting opportunities for photopharmacology. Here, we report a hybrid compound that in addition allows for its visual localization. It is the first demonstration of its kind and it even shows high photoswitchability.

The Structure and Optical Properties of Luminescent Europium Terephthalate Antenna Metal-Organic Frameworks Doped by Yttrium, Gadolinium, and Lanthanum Ions.

New heterometallic antenna terephthalate MOFs, namely, (EuM)bdc·4HO (M = Y, La, Gd) (x = 0.001-1), were synthesized by a one-step method from aqueous solutions. The resulting compounds are isomorphic to each other; the crystalline phase corresponds to Lnbdc∙4HO.

Iridium(III)-Incorporating Self-Healing Polysiloxanes as Materials for Light-Emitting Oxygen Sensors.

Polymer-metal complexes (PMCs) based on poly(2,2'-bipyridine-4,4'-dicarboxamide-co-polydimethylsiloxanes) with cyclometalated di(2-phenylpyridinato-C,N')iridium(III) fragments and cross-linked by Zn (Zn[Ir]-BipyPDMSs) or Ir (Ir[Ir]-BipyPDMSs) represent flexible, stretchable, phosphorescent, and self-healing molecular oxygen sensors. PMCs provide strong phosphorescence at λ = 595-605 nm. Zn[Ir]-BipyPDMS with PDMS chain length of M = 5000 has the highest quantum yield of 9.

Remote temperature sensing in microelectronics: optical thermometry using dual-center phosphors.

Remote thermal sensing has emerged as a temperature detection technique for tasks in which standard contact thermometers cannot be used due to environment or dimension limitations. One of such challenging tasks is the measurement of temperature in microelectronics. Here, optical thermometry using co-doped and mixed dual-center GdO:Tb/Eusamples were realized.