Self-assembled stacks of trimeric manganese porphyrins exhibit high activity in the photocatalytic epoxidation of stilbene using O2 as the oxidant. The supramolecular structure of the catalyst leads to increased stability of the system and enhances the stereoselectivity of the reaction.
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http://dx.doi.org/10.1039/c3cc45608k | DOI Listing |
Langmuir
January 2025
Biomimetic Materials and Tissue Engineering Laboratory, Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States.
The self-assembly of phenylalanine (F)-based peptides is a critical area of research with potential implications for the development of advanced biomaterials and technologies. Previous studies indicate that homo-oligopeptides with F-X residues (X = 1 to 6) can self-assemble into diverse nano-microstructures, but the role of oligopeptide chain length on this process remains unclear. This review investigates the role of F-X chain length on self-assembly processes and morphologies, considering the effect of incubation conditions and the capping group at the N and/or C terminals.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Institute of Chemistry, CAS, Laboratory of Colloid and Interface Scie, Zhong Guancun, 100080, Beijing, CHINA.
Here, we report the synthesis and self-assembly of a novel chiral 2,3:6,7‒naphthalenediimide-based triangular macrocycle (NDI-∆) and their chiroptical properties. The enantiomeric NDI-∆ is synthesized by condensation of (RR) or (SS)-trans-1,2-cyclohexanediamine and 2,3,6,7-naphthalenetetracarboxylic 2,3:6,7-dianhydride, in which the chirality of the macrocycles is controlled by the diamine. With the rigid outer π-surface, the macrocycle showed unique chiroptical properties and self-assembly modes.
View Article and Find Full Text PDFNanoscale
December 2024
Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
The transportation of ions across cell membranes is vital in biological functions and is frequently controlled by external triggers like light, ligands, and voltage. Synthetic ion transport systems, particularly those featuring gating mechanisms, have attracted considerable interest. In this research, we engineered self-assembled barrel rosette ion channels using a photoresponsive azobenzene integrated at an allosteric site.
View Article and Find Full Text PDFSmall Methods
December 2024
Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge city, Sector 81 Manauli PO, SAS Nagar, 140306, India.
The future of next-generation electronics relies on low-cost organic semiconductors that are tailored to simultaneously provide all requisite optoelectronic properties, focusing greatly on ambipolar charge-transport and solution processability. In this regard, room-temperature discotic liquid crystals (DLCs) are potential candidates, where quasi-1D self-assembly affords a charge-transport channel along their columnar axis. This work shows a molecular design strategy by utilizing anthraquinone as the primary motif, surrounded by ester functionalized tri-alkoxy phenyl units to develop room-temperature DLCs (1.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
College of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
- exhibited significant aggregation-induced Emission (AIE) characteristics, including high brightness (αAIE ≈ 40), robust light stability, a substantial Stokes shift (128 nm), and a high signal-to-noise ratio, effectively overcoming aggregation-caused quenching (ACQ). Derived from the axially chiral -H-BINOL, - was synthesized via nucleophilic cyclization and exhibited pronounced self-assembly properties. Through robust intra- and intermolecular hydrogen bonding interactions, - formed diverse supramolecular structures, including spherical flower-like aggregates, hollow-core triangular tubules, hexagonal tubules, and irregular white block-like stacks.
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