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-Functionalization of Pillar[4]arene[1]benzoquinone Monoxime via Selective 1,4-Addition of Grignard Reagents.
Org Lett
January 2025
School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, P. R. China.
-functionalization of pillar[]arenes has been a formidable challenge, partially due to the fragility of their macrocyclic skeletons. In this concise report, we describe a facile synthetic method for monoarylation/alkylation at the position to the oxime functionality in pillar[4]arene[1]benzoquinone monoxime () via addition of Grignard reagents. The described method enables the creation of various mono--alkyl/aryl-substituted pillar[5]arene derivatives that were previously inaccessible.
View Article and Find Full Text PDFA Dual-Pathway Responsive Mechanophore for Intelligent Luminescent Polymer Materials.
J Am Chem Soc
January 2025
Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310058, PR China.
Mechanoluminescent units, when integrated into polymer matrices, undergo structural transformations in response to mechanical force, resulting in changes in fluorescence. This phenomenon holds considerable promise for the development of stress-sensing materials. Despite the high demand for robust, tunable mechanoluminescent mechanophores for force assessment and smart force-responsive materials, strategies for their design and synthesis remain underdeveloped.
View Article and Find Full Text PDFImidazole Cationic-Bridged Pillar[5]arene Polymer as a Recycle Adsorbent for Iodine Capture.
ACS Appl Mater Interfaces
January 2025
Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, P. R. China.
Developing efficient and recyclable iodine adsorbents is crucial for addressing radioactive iodine pollution. An imidazole cation-bridged pillar[5]arene polymer (P5-P5I) was synthesized via a salt formation reaction. P5-P5I exhibited a high iodine vapor capture capacity of 2130.
View Article and Find Full Text PDFEffects of Intrinsic Defects on the Carrier Lifetime in CdZnTe: Insights from Ab Initio Calculations.
J Phys Chem Lett
January 2025
School of Physics, Nankai University, Tianjin 300071, China.
CdZnTe (CZT) has garnered substantial attention due to its outstanding performance in room-temperature semiconductor radiation detectors, where carrier transport properties are critical for assessing the detector performance. However, due to the complexities of crystal growth, CZT is prone to defects that affect carrier lifetime and mobility. To investigate how defects affect nonequilibrium carrier transport, nonadiabatic molecular dynamics (NAMD) is employed to examine six types of intrinsic defects and their impact on electron-hole (e-h) recombination.
View Article and Find Full Text PDFDirected evolution of diacylglycerol acyltransferases 2 promotes lipids and triglyceride accumulation.
Plant Mol Biol
January 2025
College of Life Sciences, Northwest A & F University, Xi'an, 710000, China.
Triacylglycerol (TAG) is a major component of plant-neutral lipids. Diacylglycerol acyltransferase 2 (DGAT2) plays an important role in plant oil accumulation by catalyzing the final step of the Kennedy pathway. In this study, ten DGAT2 sequences were originating from different oil crops into the TAG-deficient yeast strain H1246, to compare their enzyme activity of oil synthesis and filter out potential amino acid residue sites for directed evolution.
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