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Exploring Dynamics and Intermolecular Interactions in Binary Mixtures of Reline and DMSO: An Investigation Using Nuclear Magnetic Resonance and Infrared Spectroscopic Techniques.
J Phys Chem B
January 2025
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
Reline, which is composed of choline chloride and urea in a molar ratio of 1:2, is the first and most extensively studied deep eutectic solvent (DES). In certain applications, reline is blended with organic solvents, dimethyl sulfoxide (DMSO) in most cases, to gain improved properties. Therefore, it is crucial to have a profound understanding of the impact of DMSO on the dynamics and structures of the species in the binary mixtures.
View Article and Find Full Text PDFNeptunizhulides, Cryptic -AT Polyketide Synthase-Derived Metabolites from NBU2194.
Org Lett
January 2025
Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, Health Science Center, Ningbo University, Ningbo, Zhejiang 315211, China.
Genome mining of NBU2194 resulted in the identification of a family of 17-membered macrolides, neptunizhulides A-F. Their structures were elucidated by comprehensive spectroscopic data analysis. Stereochemical assignments of the neptunizhulides were determined by -based configuration analysis, ROESY NMR, Mosher's ester derivatization, and bioinformatic predictions.
View Article and Find Full Text PDFMolecular Structural Control of the Amorphous-Crystalline Balance in Solids: Structure-Phase Correlation in DADQs with Enhanced/Switchable Fluorescence.
Chemistry
January 2025
University of Hyderabad School of Chemistry, School of Chemistry, School of Chemistry, University of Hyderabad, 500046, Hyderabad, INDIA.
The amorphous/crystalline (A/C) assembly in molecular solids has a direct bearing on their attributes and applications, including mechanical, pharmaceutical, electronic and photophysical. A systematic analysis of the molecular features and interactions that determine the predilection towards the A, C or bi-stable A-C states is critical. This fundamental problem is addressed through an exhaustive investigation of a large family of alkoxyalkyl diaminodicyanoquinodimethanes (ROR'-DADQs); enhancement of their fluorescence from the solution, to the A, to the C state serves as an excellent signature of the phase preference and temporal stability.
View Article and Find Full Text PDFCarbon-carbon bond formation and cleavage at redox active bis(pyridylimino)isoindole (BPI) germylene compounds.
Dalton Trans
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Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, Facultad de Química, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla, 41092 Sevilla, Spain.
Redox-active ligands provide alternative reaction pathways by facilitating redox events. Among these, tridentate bis(piridylimino)isoindole (BPI) fragments offer great potential, though their redox-active behaviour remains largely underdeveloped. We describe herein a family of BPI germanium(II) complexes and the study of their redox properties.
View Article and Find Full Text PDFAn ML-Enhanced Laser-Based Methane Slip Sensor Using Wavelength Modulation Spectroscopy.
ACS Sens
January 2025
Department of Mechanical Engineering, University of British Columbia, 2054-6250 Applied Science Lane, Vancouver, British Columbia V6T 1Z4, Canada.
Natural gas (NG) is a promising alternative to diesel for sustainable transport, potentially reducing GHG and air quality emissions significantly. However, the GHG benefits hinge on managing methane slip, the unburned methane in the exhaust of NG engines, which carries a significant global warming potential. The CH slip from NG engines is highly dependent on engine type and operation, and effective greenhouse gas emission mitigation requires that the actual operation of real-world engines is monitored.
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