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Recent progress using novel tetraphenylethylene-based macrocyclic hosts in water.
Chem Commun (Camb)
December 2024
Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China.
Macrocyclic structures are popular in supramolecular chemistry and have enjoyed considerable success as platforms for elaboration to container compounds and new materials. Host/guest studies in organic media have relied heavily on structures derived from crown ethers, calixarenes, cucurbiturils, resorcinarenes and pillararenes over the past decades. More recently, their water-soluble versions have been developed for potential applications in biology.
View Article and Find Full Text PDFAdvances in Chiral Macrocycles: Molecular Design and Applications.
Chemistry
December 2024
State Key Laboratory of Luminescent Materials and Devices, Department of Chemistry, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China.
Chiral macrocycles have recently emerged as promising materials for enantioselective recognition, asymmetric catalysis, and circularly polarized luminescence (CPL) due to their terminal-free structure, preorganized chiral cavities, and unique host-guest and self-assembly properties. This review summarizes recent advances in the design and synthesis of chiral macrocycles with central, axial, helical, and planar chirality, each imparting distinct structural and chiroptical characteristics. We highlight key strategies for constructing these macrocycles and their applications in optoelectronic and catalytic systems.
View Article and Find Full Text PDFEnantiopure Macrocycles Based on Tröger's Base and Diphenyl Maleimide Exhibiting Strong Chiral Emission and Host-Guest Properties.
Chemistry
December 2024
College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071, China.
Article Synopsis
- Researchers developed new macrocyclic compounds that are both chiral and luminescent, which are rare in supramolecular chemistry.
- These macrocycles were created using a specific chemical reaction (Suzuki-Miyaura [2+2] cyclization) involving Tröger's base and diphenyl maleimide.
- The resulting structures exhibit strong fluorescence, with quantum yields of up to 100% in nonpolar solvents, and possess the ability to selectively host positively charged guest molecules.
Cracking down on vapochromic salts: unveiling vapomechanical stress in gas-sorbing platinum complexes.
Dalton Trans
November 2024
TerraPower LLC, Bellevue, WA 98008, USA.
This study explores the vapochromic and vapoluminescent behaviors of [Pt(tpy)Cl]PF host molecules (tpy = 2,2':6',2''-terpyridine) under acetonitrile (CHCN) vapor guest, challenging the conventional view that these phenomena arise solely from direct host-guest interactions. Our findings reveal a cooperative mechanism where mechanochromic surface perturbations prime the Pt(II) host for guest incorporation, leading to initial color and luminescence changes prior to significant structural alterations. While the color transition between the yellow [Pt(tpy)Cl]PF form and the red/orange [Pt(tpy)Cl]PF·CHCN form is reversible, repeated vapor cycling induces a loss of crystallinity, as indicated by diffraction peak broadening and emission shifts.
View Article and Find Full Text PDFUltrafast Luminescence Detection with Selective Adsorption of Carbon Disulfide in a Gold(I) Metal-Organic Framework.
Angew Chem Int Ed Engl
November 2024
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.
Although a widely used and important industrial chemical, carbon disulfide (CS) poses a number of hazards due to its volatility and toxicity. As such, the development of multifunctional materials for the selective capture and easy recognition of CS is one of the crucial issues. Herein, we demonstrate completely selective CS adsorption among trials involving HO, alcohols, volatile organic compounds (including thiol derivatives), N, H, O, CH, CO, NO, and CO.
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