Viologen-Based Photochromic Metal–Organic Framework for Antibiotics Detection in Water

Crystal Growth & Design, Год журнала: 2024, Номер 24(16), С. 6780 - 6789

Опубликована: Авг. 1, 2024

A viologen-functionalized europium-based metal–organic framework, denoted as compound 1, has been synthesized solvothermally by employing 1,1′-bis(3,5-dicarboxyphenyl)-4,4′-bipyridinium dichloride (abbreviated H4bdcbpCl2). Compound 1 possesses a 2-fold parallel self-interpenetrating structure composed of two sets identical three-dimensional (3D) cationic frameworks with {4·84·12}2{42·82·102}{8}2 topology. The introduction tetracarboxylic group-decorated viologen derivative not only facilitates the formation helix-based high dimensionality and positively charged framework but also promotes photoinduced electron transfer (PET)-caused photochromic property. Significantly, demonstrates rapid detection process for nitrofurantoin (NFT) nitrofurazone (NFZ) in aqueous environments, exhibiting good recycling stability, large quenching coefficient (Ksv), low limit (LOD), anti-interference ability through fluorescence turn-off mechanism. This phenomenon was further investigated spectroscopic analyses density functional theory (DFT) calculations. Moreover, exhibits sensing capabilities various ions system, including Fe3+, Cr2O72–, MnO4–, which verify that could serve multifunctional sensor molecular ionic pollutants.

Язык: Английский

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Series of Viologen-Based Metal–Organic Polyhedra with Photo/Electrochromic Behavior for Inkless Printing and UV Detection

Inorganic Chemistry, Год журнала: 2024, Номер 63(15), С. 6692 - 6700

Опубликована: Апрель 4, 2024

The fabrication of molecular crystalline materials with fast, multistimuli-responsive behavior and the construction corresponding structure–activity relationship are extraordinary significance for development smart materials. In this context, three functional metal–organic polyhedra (MOP), {[Dy2(bcbp)3(NO3)1.5(H2O)7]·Cl4.2·(NO3)0.3·H2O}n (1), {[Dy2(bcbp)4(H2O)8]Cl6}n (2), {[Eu2(bcbp)4(H2O)10]Cl6·H2O}n (3; bcbp = 1,1′-bis(4-carboxyphenyl)-4,4′-bipyridinium), were successfully prepared characterized. All compounds exhibit rapid reversible photochromic electrochromic dual-responsive behaviors. Furthermore, benefiting from well-defined crystal structure different responsive behaviors, photoinduced electron transfer (PIET) process explored. addition, considering excellent performance, function filter paper organic glass used ink-free printing UV light detection.

Язык: Английский

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Effect of lattice water on the photochromic property/photochromism of a Zn(II)-viologen coordination polymers

Journal of Molecular Structure, Год журнала: 2024, Номер 1311, С. 138340 - 138340

Опубликована: Апрель 19, 2024

Язык: Английский

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A Multistimuli Responsive Crystalline Cd(II)-Viologen Coordination Polymer with Single-Crystal–Single-Crystal Transformation

Inorganic Chemistry, Год журнала: 2021, Номер 60(17), С. 13500 - 13509

Опубликована: Авг. 17, 2021

It is necessary to develop stable and fast multistimuli responsive materials due the growing demand in our daily life. In this work, a new viologen-based Cd-complex (1) exhibits multiple thermochromic photochromic behaviors through 10 states with 7 colors. For example, it responds both Cu Kα/Mo Kα X-ray sources UV dual light quickly color change from colorless dark blue (1X) (Cu sources) cyan (1-UV) (UV light), respectively. Interestingly, three-step coloration phenomenon when heated, which unprecedented viologen compounds. Crystal 1 undergoes pink, blue, brown under 130, 180, 240 °C, addition, upon fumigation, 1P 1Q undergo decoloration process (1K) yellow (1T), Four more (1P, 1K, 1T, 1O) obtained via dehydration–hydration treatment are all photochromic. More importantly, single-crystal–single-crystal transformation (SC–SC), of were investigated molecular level, also rather rare for species. The detailed electron donor pathways transfer clearly given according results crystal structure. colorful external stimuli may be attributed transfer.

Язык: Английский

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Photochromism and photomagnetism in three cyano-bridged 3d–4f heterobimetallic viologen frameworks

Dalton Transactions, Год журнала: 2021, Номер 50(14), С. 4959 - 4966

Опубликована: Янв. 1, 2021

Three 3-D isostructural cyanide-bridged 3d–4f heterobimetallic complexes with enhanced photochromism and photomagnetism at RT have been achieved by the introduction of a photoactive viologen functionalized ligand.

Язык: Английский

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Photochromic and Room Temperature Phosphorescent Donor–Acceptor Hybrid Crystals Regulated by Core-Substituted Naphthalenediimides

Inorganic Chemistry, Год журнала: 2021, Номер 60(21), С. 16233 - 16240

Опубликована: Окт. 14, 2021

Donor-acceptor (D-A) hybrid crystals are an emerging kind of crystalline material composed semiconductive inorganic donors and organic acceptors. Except for the intrinsic photochromism, recently we have reported that anion-π polyoxometalate (POM)/naphthalenediimide (NDI) could produce interesting room temperature phosphorescence (RTP) quantum yield up to 7.2%. Herein, extended into core-substituted NDIs anticipated regulation their photochromic RTP properties. Thus, two crystals, namely (H4BDMPy-Br2NDI)·(NMP)4·(HPW12O40) (1) (H4BDMPy-I2NDI)·(HPW12O40) (2) (H2BDMPy-Br2NDI: N,N'-bis(3,5-dimethylpyrazolyl)-2,6-dibromo-1,4,5,8-naphthalenediimide H2BDMPy-I2NDI: N,N'-bis(3,5-dimethylpyrazolyl)-2,6-diiodide-1,4,5,8-naphthalenediimide), been synthesized from phosphotungstic anions (PW12O403-) Br or I NDIs. Compared core-unsubstituted analogues (H4BDMPy-NDI)·(NMP)4·(HPW12O40) (3), 2 with photosensitive iodine substituents is more sensitive light, which can become discolored under natural light. As a result heavy-atom effect, 1 exhibits remarkable 10.2% lifetime 1.14 ms.

Язык: Английский

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Metal–organic framework bearing new viologen ligand for ammonia and Cr₂O₇²⁻ sensing

RSC Advances, Год журнала: 2022, Номер 12(12), С. 6951 - 6957

Опубликована: Янв. 1, 2022

Three anionic metal–organic frameworks (MOFs) {[Zn3(BTEC)2(H2O)(4-BCBPY)]·(H2O)}n (1–3) (BTEC4− = 1,2,4,5-benzenetetracarboxylic acid anion, 4-BCBPY2+ 1,1′-bis(4-cyanobenzyl)-4,4′-bipyridinium dication) were synthesized in the reaction of with different metal salts such as ZnNO3, ZnCl2, and ZnSO4, under solvothermal conditions presence chloride. Single crystal X-ray diffraction analysis shows that compounds 1, 2 3 have MOF structures based on binuclear building units, which are connected by two protonated BTEC4− ligands three zinc ions, viologen cation is located channel to achieve charge balance. Compounds good photosensitivity, respond sunlight, UV light blue ray, turn blue. The D–A distance π–π stacking discolored samples (1P, 2P 3P) changed. In addition, showed visible color changes ammonia vapor, rapidly changing from white At same time, exhibited fluorescence quenching vapor Cr2O72−. It further proved fluorescent sensors a low detection limit (for Cr2O72−: 10−5 M) high sensitivity for was found photochromic behavior, sensing properties can be tuned nature salts.

Язык: Английский

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Conformation- and Coordination Mode-Dependent Stimuli-Responsive Salicylaldehyde Hydrazone Zn(II) Complexes

Inorganic Chemistry, Год журнала: 2023, Номер 62(16), С. 6323 - 6331

Опубликована: Апрель 12, 2023

Luminescent Zn(II) complexes that respond to external stimuli are of wide interest due their potential applications. Schiff base with O,N,O-hydrazone shows excellent luminescence properties multi-coordination sites for different coordination modes. In this work, three salicylaldehyde hydrazone (1, 2a, 2b) were synthesized and stimuli-responsive behaviors in states explored. Only complex 1 exhibits reversible self-recoverable photochromic photoluminescence solution. This may be the configuration eversion excited-state intramolecular proton transfer (ESIPT) process. solid state, 2a has obvious mechanochromic property, which is caused by destruction intermolecular interactions transformation from crystalline state amorphous state. 2b have delayed fluorescence effective halogen bond structures. could undergo crystal-phase into its polymorphous force/vapor stimulation. Interestingly, can attributed electron generation radicals induced UV irradiation. Due conformations modes, show properties. work presents multi-stimuli-responsive discusses response mechanism detail, provide new insights design materials.

Язык: Английский

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A multifunctional photochromic metal–organic framework with Lewis acid sites for selective amine and anion sensing

CrystEngComm, Год журнала: 2020, Номер 22(24), С. 4124 - 4129

Опубликована: Янв. 1, 2020

A bipyridinium-based MOF was prepared, which exhibits reversible photochromic properties, good luminescence sensing ability for Cr₂O₇²⁻, and can be considered an excellent colorimetric sensor the selective detection of amine vapors.

Язык: Английский

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Photochromic and Room-Temperature Phosphorescent D–A Hybrid Crystals Induced by Anion−π Interactions

Crystal Growth & Design, Год журнала: 2021, Номер 21(6), С. 3511 - 3520

Опубликована: Апрель 28, 2021

The donor–acceptor (D–A) hybrid crystals are an emerging class of crystalline complexes composed semiconductive organic and inorganic components at the molecular level. These unique not only possess intrinsic electron-transfer photochromic properties upon high-energy irradiations but possibly exhibit unusual room-temperature phosphorescence (RTP) emissions when suitable charge-transfer states formed with low-energy irradiations. Herein, we reported that interesting D–A indeed exhibited two such in which components, polyoxometalates (POMs) naphthalene diimides (NDIs), intercontacted through uncommon anion−π interactions. To go deep into their structure–property relationships, five different POMs (PW12O403–, SiW12O404– or Mo6O192–) protonated (or zinc-coordinated) pyrazolyl-substituted NDIs have been synthesized. Their light-induced color changes RTP systematically investigated, revealed matching electron energy levels first factor to decide while heavy atoms both coordination metal cations mainly beneficial quantum yields. Notably, yields for these up 5.9%.

Язык: Английский

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