Kemijski inštitut

Operando impedance spectroscopy with combined dynamic measurements and overvoltage analysis in lithium metal batteries - Nature Communications Conventional EIS requires simplification and equilibrium conditions, limiting dynamic process observation. Here, authors tackle this with operando EIS and overvoltage monitoring in a 3-electrode Li me...

🧪🔋 Researchers from Laboratory for Modern Battery Systems have developed an advanced operando impedance spectroscopy method for real-time battery analysis! ➡️ nature.com/articles/s41467-025-57256-0

Amine‐Functionalized Triazolate‐Based Metal–Organic Frameworks for Enhanced Diluted CO2 Capture Performance NICS-24, a novel Zn(II)-based diaminotriazolate oxalate MOF, exhibits significant improvements in CO2 adsorption at low concentrations compared to compositionally related CALF-20. In humid conditions....

🧪🔬 Researchers from the Dept. of Inorganic Chemistry & Technology, collaborating with the Dept. of Catalysis & Reaction Engineering, have developed a new zinc-oxalate MOF (NICS-24) based on diaminotriazolate.
Promising for efficient CO₂ capture in indoor environments!
➡️ doi.org/10.1002/anie...

Acidity Reversal Enables Site-Specific Ring-Opening Polymerization of Epoxides from Biprotonic Compounds Polyethers are versatile materials extensively used in advanced as well as everyday applications. The incorporation of primary amine functionality into polyethers is particularly attractive due to its well-established coupling chemistries. However, the inherent nucleophilicity of amine group poses a challenge in the anionic ring-opening polymerization (ROP) of epoxides and requires the use of robust protecting groups that can withstand the harsh conditions of ROP without triggering undesirable side reactions. In this work, we present streamlined synthesis of amino-functionalized polyethers using classic N-carbamate-protected aminoalcohols as initiators for the ROP of epoxides. A Lewis acid-excess two-component organocatalytic system is found to trigger efficient anionic ROP of epoxides while preserving the integrity of the carbamate protection. Despite the higher intrinsic acidity of the carbamate group compared to the hydroxyl group, it is noncompetitive in both the deprotonation and ring-opening steps. This is due to an intriguing acidity-reversing effect of the catalyst, which allows site-specific ethoxylation to proceed exclusively from the hydroxyl group. The resulting poly(propylene oxide) and poly(ethylene oxide) exhibit the targeted molar mass, low dispersity, and well-defined end groups. The fidelity of the amino functionalities is further corroborated and utilized in construction of polypeptoide-based hybrid block copolymers using the synthesized polyethers as macroinitiators.

Researchers from the National Institute of Chemistry and SCUT present a straightforward synthetic route for the preparation of amino-functionalized polyethers via ROP of epoxide. Read the study in @pubs.acs.org ➡️ pubs.acs.org/doi/10.1021/...

Researchers at the National Institute of Chemistry have developed a novel therapeutic strategy called cytokine-armed pyroptosis.
The study, published in @naturecomms.bsky.social , will be presented by first author Sara Orehek on January 23, 2025, at the Forum 40 lecture series.
bit.ly/4ho2e7m

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