Metal–organic frameworks for organic transformations by photocatalysis and photothermal catalysis

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(18), P. 9378 - 9418

Published: Jan. 1, 2024

Organic transformation by light-driven catalysis, especially, photocatalysis and photothermal denoted as photo(thermal) is an efficient, green, economical route to produce value-added compounds. In recent years, owing their diverse structure types, tunable pore sizes, abundant active sites, metal-organic framework (MOF)-based catalysis has attracted broad interest in organic transformations. this review, we provide a comprehensive systematic overview of MOF-based for First, the general mechanisms, unique advantages, strategies improve performance MOFs are discussed. Then, outstanding examples transformations over introduced according reaction type. addition, several representative advanced characterization techniques used revealing charge kinetics intermediates presented. Finally, prospects challenges field proposed. This review aims inspire rational design development materials with improved catalysis.

Language: Английский

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Regulating the Topologies and Photoresponsive Properties of Lanthanum‐organic Frameworks

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(66)

Published: Aug. 15, 2024

Abstract Metal‐organic frameworks (MOFs) show potential application in many domains, which photochromic MOFs (PMOFs) have received enormous attention. Researchers mainly utilize photoactive ligands to build PMOFs. Recently, the mixed electron donating and accepting strategies also been used construct PMOFs driven by transfer between nonphotochromic moieties. However, interligand competition inhibits formation of Therefore, exploration single‐ligand‐guided assembly is conductive for building Considering existing role pyridyl carboxyl, pyridinecarboxyate derived from fusion carboxyl units may serve as single ligand yield (Figure 1d). In this work, coordination bipyridinedicarboxylate (2,2′‐bipyridine‐4,4′‐dicarboxylic acid, H 2 bpdc; 1,10‐phenanthroline‐2,9‐dicarboxylic pda) LaCl 3 generate two PMOFs, [La(bpdc)(H O)Cl] ( 1 ) [La(pda)(H O) Cl]⋅2H O ). Both complexes feature dinuclear lanthanum blocks with differences connecting number likers, has (4,8)‐connected topology exhibits sql topology. Their structural result diversities photoresponsive functionalities. Compared reported built ligands, study provides new available categories generating tuning structure properties via substitution external photostimulus.

Language: Английский

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A general supramolecular strategy for fabricating full-color-tunable thermally activated delayed fluorescence materials

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 16, 2024

Abstract Developing a facile and feasible strategy to fabricate thermally activated delayed fluorescence materials exhibiting full-color tunability remains an appealing yet challenging task. In this work, general supramolecular for fabricating is proposed. Consequently, series of host–guest cocrystals are prepared by electron-donating calix[3]acridan various electron-withdrawing guests. Owing the through-space charge transfer mediated multiple noncovalent interactions, these all display efficient fluorescence. Especially, delicately modulating ability guest molecules, emission colors can be continuously tuned from blue (440 nm) red (610 nm). Meanwhile, high photoluminescence quantum yields up 87% achieved. This research not only provides alternative fabrication materials, but also establishes reliable protocol toward design advanced luminescent materials.

Language: Английский

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Encapsulation engineering of porous crystalline frameworks for delayed luminescence and circularly polarized luminescence

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 6694 - 6734

Published: Jan. 1, 2024

Delayed luminescence (DF), including phosphorescence and thermally activated delayed fluorescence (TADF), circularly polarized (CPL) exhibit common broad application prospects in optoelectronic displays, biological imaging, encryption. Thus, the combination of is attracting increasing attention. The encapsulation guest emitters various host matrices to form host-guest systems has been demonstrated be an appealing strategy further enhance and/or modulate their luminescence. Compared with conventional liquid crystals, polymers, supramolecular matrices, porous crystalline frameworks (PCFs) metal-organic (MOFs), covalent-organic (COFs), zeolites hydrogen-bonded organic (HOFs) can not only overcome shortcomings such as flexibility disorder but also achieve ordered guests long-term stability chiral structures, providing new promising platforms for development DF CPL. In this review, we provide a comprehensive critical summary recent progress photochemistry

Language: Английский

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Dynamic Reversible Full‐Color Piezochromic Fluorogens Featuring Through‐Space Charge‐Transfer Thermally Activated Delayed Fluorescence and their Application as X‐Ray Imaging Scintillators

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(20)

Published: Feb. 28, 2024

Abstract Thermally activated delayed fluorescence (TADF) emitters featuring through‐space charge transfer (TSCT) can be excellent candidates for piezochromic luminescent (PCL) materials due to their structural dynamics. Spatial donor‐acceptor (D−A) stacking arrangements enable the modulation of inter‐ and intramolecular D−A interactions, as well spatial states, under varying pressure conditions. Herein, we demonstrate an effective approach toward dynamic reversible full‐color PCL with TSCT‐TADF characteristics. Their single crystals exhibit a full‐color‐gamut process spanning range 170 nm. Moreover, TSCT‐TADF‐PCL display unity photoluminescence quantum yield, show promising application in X‐ray scintillator imaging.

Language: Английский

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Unleashing Ambient Triplet Harvesting Pathways in Arylene Diimides via Modular, Noncovalent Charge Transfer Interactions

Chemistry of Materials, Journal Year: 2023, Volume and Issue: 35(18), P. 7781 - 7788

Published: Sept. 8, 2023

Development of organic molecules that can harvest triplet excitons under ambient conditions by a relatively simple strategy holds great promise in the paradigm photophysics. Deploying through-space charge transfer (CT) interactions via noncovalently stacked donor–acceptor molecular design be tuned accordance with structural modifications considered an attractive toward this direction. Herein, we accomplish precise control tuning harvesting pathways cocrystals engineering CT complexation between them. We use pyromellitic diimide (PmDI) phosphor to cocrystallize different donors such as dibenzofuran (DBF), dibenzothiophene (DBT), and dibenzoselenophene (DBS) augment two counterparts carefully toggle emission into singlet (1CT) fluorescence, thermally activated delayed fluorescence (TADF), (3CT) phosphorescence, their respective cocrystals. On moving from PmDI-DBF PmDI-DBT, was biased 1CT TADF. The synergistic involvement strong heavy-atom effect diverts excited TADF exclusively 3CT phosphorescence PmDI-DBS. Most crucially, not only put forward methodology for biasing state various but also glorify modular noncovalent without complicated synthetic efforts unlike conventional covalent designs.

Language: Английский

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Donor–Acceptor Functionalized Water-Soluble Metal–Organic Cages Showing an Excellent Synergistic Photothermal–Chemotherapy Effect

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

Water-soluble metal–organic cages (WSMOCs) show high potential as antitumor agents, while the targeted functionalization of WSMOCs toward enhanced performances is a challenging task. Herein, were functionalized with donor–acceptor (D–A) systems for synergistic photothermal–chemotherapy. Octahedral [M6L4] based on 2,4,6-tri(2-pyridine-4-yl)-1,3,5-triazine (TPT) acceptor and M(bpy)2+ (M = Pd 1a, Pt 1b) nodes tetrathiafulvalene (TTF) to form TTF@1a TTF@1b. This D–A charge transfer, extending absorption into near-infrared region photothermal conversion efficiencies 35.65% 40.65% Also, was found enhance stability compound induce their aggregation nanoparticles increase cellular compatibility. Additionally, acidic-sensitive ion release feature compounds made them promising chemotherapy. In vitro in vivo tests demonstrated effectiveness this approach applications.

Language: Английский

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Spatially Resolved Organic Whispering‐Gallery‐Mode Hetero‐Microrings for High‐Security Photonic Barcodes

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(46)

Published: Aug. 22, 2023

Whispering-gallery-mode (WGM) microcavities featuring distinguishable sharp peaks in a broadband exhibit enormous advantages the field of miniaturized photonic barcodes. However, such kind barcodes developed hitherto are primarily based on wherein multiple gain medias were blended into single matrix, thus resulting limited and indistinguishable coding elements. Here, surface tension assisted heterogeneous assembly strategy is proposed to construct spatially resolved WGM hetero-microrings with spatial colors along its circular direction. Through precisely regulating charge-transfer (CT) strength, full-color microrings covering entire visible range effectively acquired, which series recognizable allow for effective construction high-quality Notably, elements finally acquired through nucleation growth controlled by directional diffusion between hetero-emulsion droplets, remarkably promoting security strength capacity The results would be useful fabricate new types organic hierarchical hybrid heterostructures optical information recording labels.

Language: Английский

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Incorporation of a one-dimensional electron-rich chain in viologen-based coordination polymers for super photochromic properties and improved optical applications in polyvinyl alcohol film

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(11), P. 3200 - 3210

Published: Jan. 1, 2024

1D electron-rich complex chain was incorporated to the viologen (1), resulting in robust photochromic properties, distinct ET pathways, and applications optics. And 1-PVA film can improve photochromism of complexes.

Language: Английский

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Low-power, non-coherent light-triggered two-photon absorption via extending the lifetime of the transition state

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 511, P. 215868 - 215868

Published: April 22, 2024

Language: Английский

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