Recent advances in crystalline hybrid photochromic materials driven by electron transfer

Coordination Chemistry Reviews, Год журнала: 2021, Номер 452, С. 214304 - 214304

Опубликована: Ноя. 19, 2021

Язык: Английский

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Photoelectron Transfer Mediated by the Interfacial Electron Effects for Boosting Visible-Light-Driven CO₂ Reduction

ACS Catalysis, Год журнала: 2022, Номер 12(6), С. 3550 - 3557

Опубликована: Март 4, 2022

Imine-linked covalent organic frameworks (COFs) are popular candidates for photocatalytic CO2 reduction, but high polarization of the imine bond is less efficient π-electron delocalization between linked building units, leading to low intramolecular electron transfer and poor efficiency. Herein, we present a structural electronic engineering strategy through integrating imine-linked COF consisting Zn–porphyrin Co–bipyridyl units with cadmium sulfide (CdS) nanowires form CdS@COF core–shell structure. The experimental theoretical results have validated that CdS serves as channel interfacial effects, which induces photoelectron from subsequent injection into reduction. as-prepared generates 4057 μmol g–1 CO in 8 h under visible-light irradiation, considerably higher than those its neat counterparts. This work provides protocols tackle charge across polar linkages photosensitizers active sites solar-to-chemical energy conversion.

Язык: Английский

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Dynamic Manipulating Space‐Resolved Persistent Luminescence in Core–Shell MOFs Heterostructures via Reversible Photochromism

Angewandte Chemie International Edition, Год журнала: 2021, Номер 61(2)

Опубликована: Ноя. 7, 2021

Photo-controllable persistent luminescence at the single crystal level can be achieved by integration of long-lived room temperature phosphorescence (RTP) and photochromism within metal-organic frameworks (MOFs) for first time. Moreover, multiblock core-shell heterojunctions have been prepared utilizing isostructural MOFs through an epitaxial growth process, in which shell exhibits bright yellow afterglow emission that gradually disappears upon further irradiation, but core does not show such property. Benefitting from combined photochromic behavior, a multiple encryption demo facilely designed based on dynamic manipulating RTP via reversible photochromism. This work only develops new types dynamically photo-controllable switch, also provides method to obtain MOFs-based optical towards potential space/time-resolved information anti-counterfeiting applications.

Язык: Английский

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Controlled Photoinduced Generation of “Visual” Partially and Fully Charge Separated States in Viologen Analogues

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(5), С. 2232 - 2238

Опубликована: Фев. 1, 2021

Charge-separated states with a lifetime scale of seconds or longer not only favor studies using various steady-state analysis techniques but are important for light-energy conversion and other applications. Through steric-hindrance-induced method, unprecedented photoinduced generation partially charge separated (PCS) state days has been detected in the "visual" mode during decay excited to commonly observed fully (FCS) viologen analogues. One pale yellow 4,4′-bipyridine-based metalloviologen compound, an interannular dihedral angle 1.84° 4,4′-bipyridine, directly decays purple FCS after photoexcitation. The similar coordination framework larger (33.74°), changes first PCS then relaxes slowly (in dark Ar, ca. 2 days; 70 °C 1 h) state. two-step coloration phenomenon is compounds their analogues also rather rare photochromic species. EPR Raman data reveal that separation generates univalent zinc radicals received electron Zn(I) distributes further 4,4′-bipyridine. Reduction π-conjugation direct indirect change band gap account prolongation relaxation process capture These findings help understand control processes provide potential design strategy multicolor photochromism, high efficiency,

Язык: Английский

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Photochromic crystalline hybrid materials with switchable properties: Recent advances and potential applications

Coordination Chemistry Reviews, Год журнала: 2022, Номер 475, С. 214918 - 214918

Опубликована: Окт. 31, 2022

Язык: Английский

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Donor–Acceptor Mixed-Naphthalene Diimide-Porphyrin MOF for Boosting Photocatalytic Oxidative Coupling of Amines

ACS Catalysis, Год журнала: 2023, Номер 13(8), С. 5723 - 5732

Опубликована: Апрель 12, 2023

Integrating electron donor and acceptor chromophores as ligands within one MOF for light harvesting photocatalysis appears to be a major synthesis challenge. Meanwhile, high-efficiency selective aerobic oxidative coupling of amines imines under mild conditions is highly desirable scientific industrial fields. Herein, via facile one-pot synthetic strategy, an porphyrin ligand 5,15-di(p-benzoato)porphyrin (H2DPBP) was successfully integrated into naphthalene diimide (electron acceptor)-based Zr-MOF (Zr-NDI) construct mixed-ligand (Zr-NDI-H2DPBP) benefiting from the two with similar geometry connectivity. When utilized heterogeneous photocatalyst benzylamine at room temperature, prepared Zr-NDI-H2DPBP exhibited boosted imine generation rate (136 mmol g–1 h–1) far exceeding those other noble-metal-free photocatalysts can applied various derivatives. Furthermore, results experiments density functional theory calculations, photocatalytic performance attributed photoinduced transfer H2DPBP NDI energy facilitated by photosensitized irradiation, which effectively improve electron–hole separation efficiency generate abundant reactive active species superoxide radical (O2•–) singlet oxygen (1O2), respectively. This work provides avenue chromophore-based light-harvesting systems utilizing MOFs platforms boost solar-energy conversion.

Язык: Английский

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Chemorobust dye-encapsulated framework as dual-emission self-calibrating ratiometric sensor for intelligent detection of toluene exposure biomarker in urine

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Год журнала: 2023, Номер 296, С. 122637 - 122637

Опубликована: Март 17, 2023

Язык: Английский

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Photochromic Supramolecular Isomers Derived from Pb(II)-Bipyridinedicarboxylate Complexes

Inorganic Chemistry, Год журнала: 2023, Номер 62(22), С. 8663 - 8669

Опубликована: Май 24, 2023

Photochromic metal-organic complexes (PMOCs) have received huge attention of chemists, thanks to their diverse structural characteristic and various available photo-modulate physicochemical functionalities. The organic ligand plays a crucial role in the quest PMOCs with specific photo-responsive multiple coordination modes polydentate ligands also provide possibilities for forming isomeric MOCs, which may open new perspective on research PMOCs. exploration suitable PMOC systems is significant yield Taking into account extant based polypyridines carboxylate as electron acceptors (EAs) donors (EDs), covalent fusion pyridyl carboxyl species produce single functionalized bearing ED EA moieties building novel In this study, assembly bipyridinedicarboxylate (2,2'-bipyridine-4,4'-dicarboxylic acid, H2bpdc) Pb2+ ions generate two [Pb(bpdc)]·H2O (1 2), same chemical compositions main discrepancies mode bpdc2- ligands. As expected, supramolecular isomers 1 2 exhibited different photochromic performance, distinct microscopic functional units. A schematic encryption anti-counterfeiting device has been studied. Compared extensively studied supported by photoactive like pyridinium naphthalimide-derivatives derived from mixed electron-accepting N-ligands electron-donating ligands, our work provides idea pyridinecarboxylic acid

Язык: Английский

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Optical Phenomena in Molecule-Based Magnetic Materials

Chemical Reviews, Год журнала: 2024, Номер 124(9), С. 5930 - 6050

Опубликована: Апрель 30, 2024

Since the last century, we have witnessed development of molecular magnetism which deals with magnetic materials based on species, i.e., organic radicals and metal complexes. Among them, broadest attention was devoted to molecule-based ferro-/ferrimagnets, spin transition materials, including those exploring electron transfer, nanomagnets, such as single-molecule magnets (SMMs), qubits, stimuli-responsive materials. Their physical properties open application horizons in sensors, data storage, spintronics, quantum computation. It found that various optical phenomena, thermochromism, photoswitching characteristics, luminescence, nonlinear chiroptical effects, well responsivity external stimuli, can be implemented into Moreover, fruitful interactions these effects provide new cross-effects multifunctionality, enriching applications optical, electronic, devices. This Review aims show scope phenomena generated recent advances areas high-temperature photomagnetism, thermometry utilizing SMMs, addressability magneto-chiral dichroism, opto-magneto-electric multifunctionality. These findings are discussed context types accessible for classes

Язык: Английский

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Multi‐Physical Lattice Metamaterials Enabled by Additive Manufacturing: Design Principles, Interaction Mechanisms, and Multifunctional Applications

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 20, 2025

Abstract Lattice metamaterials emerge as advanced architected materials with superior physical properties and significant potential for lightweight applications. Recent developments in additive manufacturing (AM) techniques facilitate the of lattice intricate microarchitectures promote their applications multi‐physical scenarios. Previous reviews on have largely focused a specific/single field, limited discussion properties, interaction mechanisms, multifunctional Accordingly, this article critically design principles, structure‐mechanism‐property relationships, enabled by AM techniques. First, are categorized into homogeneous lattices, inhomogeneous other forms, whose principles processes discussed, including benefits drawbacks different fabricating types lattices. Subsequently, structure–mechanism–property relationships mechanisms range fields, mechanical, acoustic, electromagnetic/optical, thermal disciplines, summarized to reveal critical principles. Moreover, metamaterials, such sound absorbers, insulators, manipulators, sensors, actuators, soft robots, management, invisible cloaks, biomedical implants, enumerated. These provide effective guidelines

Язык: Английский

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