A straightforward postsynthetic lanthanide functionalization strategy is developed for fabricating highly sensitive ratiometric luminescent nanothermometers based on nanosized MOFs, which highlights the ability of a broad range of nanosized MOFs to construct nanothermometers.

CO oxidation is one of the most extensively investigated reactions in the field of heterogeneous catalysis because of its importance in both environmental protection and fundamental studies.

Elevated plasma levels of homocysteine are a risk factor for cardiovascular diseases, neural tube defects, and Alzheimer's disease. The transsulfuration pathway converts homocysteine to cysteine, and approximately 50% of the cysteine in glutathione is derived from homocysteine in human liver cells, which suggests the hypothesis that defects in the transsulfuration pathway perturb redox homeostasis. To test this hypothesis, we examined a murine model for hyperhomocysteinemia in which the gene encoding the first enzyme in the transsulfuration pathway, cystathionine beta-synthase (CBS), has been disrupted. Limited metabolite profiling and CBS expression studies in liver, kidney, and brain reveal tissue-specific differences in the response to Cbs disruption. Homozygous disruption of Cbs lowered cysteine concentration in all three organs. Glutathione concentration was diminished in liver and brain, thus affecting the redox buffering capacity in these organs, whereas the approximately twofold higher glutathione synthesis capacity in kidney helped preserve the glutathione pool size despite loss of the transsulfuration pathway in this organ. In contrast, disruption of a single Cbs allele elicited only minor redox perturbations. Furthermore, the Cbs+/- genotype did not confer a significant disadvantage compared with the Cbs+/+ genotype in hepatocytes challenged by oxidative stress from exposure to tertiary butylhydroperoxide. These studies provide evidence that homozygous disruption of Cbs perturbs redox homeostasis and reduces cysteine levels, raising the possibility that these changes may be important in the etiology of the clinical manifestations of CBS deficiency.

Highly luminescent MIL-53–COOH (Al) nanocrystals were fabricated by post-functionalization with Eu3+, which demonstrates super selectivity and sensitivity in detection of Fe3+ in aqueous solutions.

devices and for various types of consumer electronics. All-solid-state rechargeable batteries (ASSBs) utilizing solid-electrolyte separators rather than combustible liquid electrolytes possess the inherent advantages of enhanced safety and stability for state-of-the-art battery technologies. [1] Recently, ASSBs have attracted a resurgence of interest as ideal candidates for the next generation of electrochemicalenergy-storage devices. The superiority of ASSBs could be ascribed to the distinctive attributes of solid-state electrolytes (SSEs), including high Li-ion transference number and safety, and comparable ionic conductivity to their liquid counterparts. [2] The adoption of SSEs could offer new opportunities for the high-temperature electrical-energy-storage market and pave the way for the utilization of high-capacity electrodes, such as Li, Na, and sulfur. [2c,3] In contrast, in conventional batteries employing liquid electrolytes, the highcapacity electrodes may meet with detrimental side reactions, causing problems such as dendrite growth, reactivity, and/ or dissolution in the solvent. [4,5] With the construction of rigid solid electrolyte separators and stable interfaces in ASSBs, dendrite growth can be effectively mitigated, thus improving the safety of the batteries. [4,6] Owing to these benefits, in battery research, the number of studies on fabricating superionic SSEs has grown rapidly. Despite great progress gained these years, issues Borohydride solid-state electrolytes with room-temperature ionic conductivity up to ≈70 mS cm −1 have achieved impressive progress and quickly taken their place among the superionic conductive solid-state electrolytes. Here, the focus is on state-of-the-art developments in borohydride solid-state electrolytes, including their competitive ionic-conductive performance, current limitations for practical applications in solid-state batteries, and the strategies to address their problems. To open, fast Li/Na/Mg ionic conductivity in electrolytes with BH 4 − groups, approaches to engineering borohydrides with enhanced ionic conductivity, and later on the superionic conductivity of polyhedral borohydrides, their correlated conductive kinetics/thermodynamics, and the theoretically predicted high conductive derivatives are discussed. Furthermore, the validity of borohydride pairing with coated oxides, sulfur, organic electrodes, MgH 2 , TiS 2 , Li 4 Ti 5 O 12 , electrode materials, etc., is surveyed in solid-state batteries. From the viewpoint of compatible cathodes, the stable electrochemical windows of borohydride solid-state electrolytes, the electrode/electrolyte interface behavior and battery device design, and the performance optimization of borohydride-based solid-state batteries are also discussed in detail. A comprehensive coverage of emerging trends in borohydride solid-state electrolytes is provided and future maps to promote better performance of borohydride SSEs are sketched out, which will pave the way for their further development in the field of energy stora...

Covalent organic polymer-4 (COP-4) supported palladium (Pd) catalysts were prepared for the first time. The Pd particles are highly dispersed into pores of COP-4 with electron reduction and the use of N,N-dimethylformamide (DMF) as the solvent. The catalysts show high activity for CO oxidation.

No abstract

We demonstrate tunable white-light emission and multi-readout thermometry in two respective nanocrystalline luminescent metal-organic frameworks (MOFs), which are prepared via postsynthetic functionalization with lanthanide cations of a robust UiO type MOF bearing the 2,2'-bipyridyl moiety (UiO-67-bpydc, 1). The white-light emitting framework Eu(3+)@1 can be conveniently applied as a thin film onto a commercial UV-LED chip for practical white lighting applications. The multi-readout orthogonal thermometry is illustrated in relation to the emission intensity ratio as well as the decay time and luminescence color of Eu(3+)/Tb(3+)@1 nanocrystals. This work highlights the opportunity for designing white-light emitters and nanothermometers based on lanthanide functionalized MOFs.