Materials Today Energy, Journal Year: 2024, Volume and Issue: unknown, P. 101771 - 101771
Published: Dec. 1, 2024
Language: Английский
Chemical Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Precise endo -functionalization tailors the host cavity to fit shape and charge distribution of target guest molecules, offering a novel bottom-up strategy for constructing customized molecular receptors.
Language: Английский
Citations
0
Beilstein Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: 21, P. 421 - 443
Published: Feb. 24, 2025
The bespoke environments in enzyme active sites can selectively accelerate chemical reactions by as much 1019. Macromolecular and supramolecular chemists have been inspired to understand mimic these accelerations selectivities for applications catalysis sustainable synthesis. Over the past 60+ years, mimicry strategies evolved with changing interests, understanding, synthetic advances but, ubiquitously, research has focused on use of a molecular "cavity". activities different cavities vary subset features available particular cavity type. Unsurprisingly, without access mimics able encompass more/all functional sites, examples cavity-catalyzed processes demonstrating enzyme-like rate remain rare. This perspective will briefly highlight some key traditional catalysis, type, order contextualize recent development robust organic cage catalysts, which exploit stability, functionality, reduced symmetry enable promising catalytic modes.
Language: Английский
Citations
0
Chemical Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
A sulfate-binding stiff-stilbene based bis(cyclopeptide) gives rise to 1 : 1, 2 and host–guest assemblies, which can be interconverted by light irradiation acid/base addition.
Language: Английский
Citations
0
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(46), P. 31746 - 31756
Published: Nov. 6, 2024
Modern and upcoming high-speed optoelectronics as well secure data storage or solar energy harvesting technologies integrating stimuli-responsive materials fully rely on the fundamental concept of rapid transitions between discrete states possessing different properties. Relatively slow transition kinetics those for commonly used classes photochromic compounds in solution bulk solids severely restrict applicability device development. Herein, we report a multivariate strategy based spirooxazine derivative, coordinatively integrated solvent-free confined space solid-state matrix, such metal-organic framework (MOF), first time, resulting fastest photoresponse reported any material to date. The photoisomerization rate developed was estimated be 126 s
Language: Английский
Citations
2
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 8, 2024
Herein, we reported a biofuel-driven recyclable chiral supramolecular transfer container based on hexacationic triphenylamine cage and nucleotides. Possessing rotatable paddle rigid backbones, the artificial receptor effectively encapsulated nucleotides with high binding constant up to 5.37×10
Language: Английский
Citations
1
Chemical Communications, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 2, 2024
This work summarizes macrocyclic catalysis strategies for overcoming aqueous-phase reactivity challenges, product inhibition, and catalyst compatibility in “one-pot” reactions.
Language: Английский
Citations
1
Crystals, Journal Year: 2024, Volume and Issue: 14(10), P. 873 - 873
Published: Oct. 2, 2024
The crystalline sponge method has proven invaluable in the preparation and analysis of supramolecular host/guest complexes if host can be obtained a suitable form, allowing guest binding modes inside cavities which inform other studies into processes such as catalysis. Here, we report structures set ten using an octanuclear coordination cage with range small-molecule neutral organic guests including four aromatic aldehydes ketones, three cyclic lactams, epoxides. In all cases, cavity-bound are anchored by collection CH•••O hydrogen-bonding interactions between O atom on convergent CH protons at pocket interior surface. Depending size presence solvent molecules additional guests, there may one or two small forming π-stacked pairs. Some (the lactams) participate NH•••F H-bonding surface-bound fluoroborate anions, indicate type anion/guest thought to responsible for solution-phase catalytic reactions bound guests.
Language: Английский
Citations
0
Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 27, 2024
Abstract Heteroleptic (mixed‐ligand) coordination cages are of interest as host systems with more structurally and functionally complex cavities than homoleptic architectures. The design heteroleptic cages, however, is far from trivial. In this work, we experimentally probed the self‐assembly Pd(II) ions binary ligand combinations in a combinatorial fashion to search for new cis ‐Pd 2 L L’ cages. A hierarchy computational analyses was then applied these aim elucidating key factors rationalising outcomes. Simple inexpensive geometric were shown be effective identifying complementary pairs. Preliminary results demonstrated viability relatively rapid semi‐empirical calculations predicting topology thermodynamically favoured assemblies rigid ligands, whilst flexible proved challenging. Stemming this, challenges identified future work developing forecasting tools self‐assembled metallo‐supramolecular systems.
Language: Английский
Citations
0
Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 8, 2024
Abstract Herein, we reported a biofuel‐driven recyclable chiral supramolecular transfer container based on hexacationic triphenylamine cage and nucleotides. Possessing rotatable paddle rigid backbones, the artificial receptor effectively encapsulated nucleotides with high binding constant up to 5.37×10 5 M −1 in water, displaying guest‐induced efficient fluorescence enhancement quantum yield increased from 6.5 % 16.6 %. Especially, achiral could bind adenosine triphosphate activate chirality substrates single molecular container, giving circularly polarized luminescence at 575 nm positive Cotton effect peaks significant asymmetric factor ( g abs =+6.4×10 −4 ). Meanwhile, adaptive supramolecule not only has reversible thermal responsiveness but also stepwise regulate by catalysis of hexokinase apyrase tandem, showing recovery after refueled, achieving dynamically regulated programmable multistate luminescent supramolecules. Therefore, be successfully applied logic gates multilevel information encryption, providing new insight into intelligent materials.
Language: Английский
Citations
0
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 12, 2024
Abstract We report a light‐responsive tetrahedral metal–organic capsule that binds perrhenate catalyst, which is released selectively upon irradiation with 350 nm light, turning on the catalytic reduction of organic carbonyls by hydrosilanes. The activity can be switched off heating at 75 °C for 2.5 h, stimulates reformation and catalyst re‐encapsulation. Multiple on‐off cycles were shown, clear relationship between product yield light time. Encapsulation thus enables coupling light‐responsiveness to catalysis in manner might generalized other catalysts capsules.
Language: Английский
Citations
0