A self-assembled capsule facilitates reactions of isocyanates with water. The capsule provides an amphiphilic environment with hydrophobic aromatic ends and hydrophilic glycoluril units at the center. Reaction takes place in the narrow, cylindrical space to form the N,N-dialkylurea, which then appears in a longer capsule.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1039/c2cc34063a | DOI Listing |
J Chem Phys
November 2024
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan.
Encapsulation of coordination complexes within the confined spaces of self-assembled hosts is an effective method for creating supramolecular assemblies with distinct chemical and physical properties. Recent studies with calix-resorcin[4]arene hydrogen-bonded hexameric capsules revealed that encapsulated metal complexes exhibit enhanced and blue-shifted photoluminescence compared to their unencapsulated forms. The photophysical change has been hypothetically attributed to encapsulation-induced confinement, which isolates the metal complex from the solvent, suppressing stabilization of the excited state of the guest by solvent reorganization and structural relaxation, and altering the local environment, such as solvent polarity and viscosity, around the guest.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
Osteoarthritis (OA) is a common chronic inflammatory disease that leads to disability and death. Existing therapeutic agents often require frequent use, which can lead to drug resistance and long-term side effects. Polyphenols have anti-inflammatory and antioxidant potential.
View Article and Find Full Text PDFJACS Au
August 2024
Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.
Molecular hosts with functional cavities can emulate enzymatic behavior through selective encapsulation of substrates, resulting in high chemo-, regio-, and stereoselective product formation. It is still challenging to synthesize enzyme-mimicking hosts that exhibit a narrow substrate scope that relies upon the recognition of substrates based on the molecular size. Herein, we introduce a Pd self-assembled water-soluble molecular capsule [ ] () that was formed through the self-assembly of a ligand (4',4‴'-(1,4-phenylene)bis(1',4'-dihydro-[4,2':6',4″-terpyridine]-3',5'-dicarbonitrile)) with the acceptor -[(en)Pd(NO)] [en = ethane-1,2-diamine] ().
View Article and Find Full Text PDFNat Commun
July 2024
Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Organic Chemistry Department, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
The biological and technological importance of anion-mediated processes has made the development of improved methods for the selective recognition of anions one of the most relevant research topics today. The hydration sphere of anions plays an important role in the functions performed by anions by forming a variety of cluster complexes. Here we describe a supramolecular capsule that recognizes hydrated anion clusters.
View Article and Find Full Text PDFChem Sci
June 2024
Department of Organic and Polymer Chemistry, Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University Changsha Hunan-410083 China.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!