Heat triggered molecular restructuring results in triple gel–gel–gel transformations in a Li<sup>+</sup>-integrated metallogel

Mukherjee, Moupia; Dixit, Manish; Kumar, Yogendra; Kalam, Abul; Dubey, Mrigendra

doi:10.1039/d2me00146b

Cited by 6 publications

(2 citation statements)

References 74 publications

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“…Eu 2 L 3 also exhibited a higher Φ value (38.16% for Eu 2 L 3 versus 14.42% for Eu(L 1 ) 3 ). It should be noted that the UV–vis absorption study for Eu 2 L 3 ‐ Gels displayed slightly red‐shifted absorption as compared to Eu 2 L 3 with the same concentration, suggesting that the ordered structure in Eu 2 L 3 ‐ Gels was favorable for energy transfer between L and Eu 3+ ions, [ 21 ] which was further verified by the comparison of the emission intensities of Eu 2 L 3 ‐ Gels and Eu 2 L 3 (Figure S14, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Eu³⁺‐Directed Supramolecular Metallogels with Reversible Quadruple‐Stimuli Response Behaviors

Chen,

Li,

Zhang

et al. 2024

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Smart luminescent materials that have the ability to reversibly adapt to external environmental stimuli and possess a wide range of responses are continually emerging, which place higher demands on the means of regulation and response sites. Here, europium ions (Eu3+)‐directed supramolecular metallogels are constructed by orthogonal self‐assembly of Eu3+ based coordination interactions and hydrogen bonding. A new organic ligand (L) is synthesized, consisting of crown ethers and two flexible amide bonds‐linked 1,10‐phenanthroline moieties to coordinate with Eu3+. Synergistic intermolecular hydrogen bonding in L and Eu3+‐L coordination bonding enable Eu3+ and L to self‐assemble into shape‐persistent 3D coordination metallogels in MeOH solution. The key to success is the utilization of crown ethers, playing dual roles of acting both as building blocks to build L with C2‐symmetrical structure, and as the ideal monomer for increasing the energy transfer from L to Eu3+’s excited state, thus maintaining the excellent luminescence of metallogels. Interestingly, such assemblies show K+, pH, F−, and mechano‐induced reversible gel‐sol transitions and tunable luminescence properties. Above findings are useful in the studies of molecular switches, dynamic assemblies, and smart luminescent materials.

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Section: Resultsmentioning

confidence: 99%

Eu³⁺‐Directed Supramolecular Metallogels with Reversible Quadruple‐Stimuli Response Behaviors

Chen,

Li,

Zhang

et al. 2024

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“…Enlightened by biological phenomena, the utilization of various non-covalent interactions for practical application has been growing continually. The journey of synthesizing metallogels, − a class of supramolecular systems, has caught distinctive attention currently in science and technology. Metallogel offers three-dimensional soft-scaffold composed of metal ions, low molecular weight gelator molecules, and an immobilized solvent through the interplay of supramolecular interactions.…”

Section: Introductionmentioning

confidence: 99%

Suberic Acid-Based Supramolecular Metallogels of Ni(II), Zn(II), and Cd(II) for Anti-Pathogenic Activity and Semiconducting Diode Fabrication

et al. 2023

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The importance of three synthesized metallogels of suberic acid distinctly with nickel, zinc, and cadmium acetate salts has been uncovered. For the creation of these soft materials, N,N′-dimethyl formamide was utilized as a source of the trapped solvent. The synthesized metallogels display intriguing viscoelasticity, and the interpretation of experimental parameters obtained from rheological results advocates the gel behavior. Microstructural analysis combined with energy-dispersive X-ray confirms the occurrence of individual gel-developing constituents as observed in different hierarchical microstructural patterns. Significant variations in microstructural arrangements with diverse extent of supramolecular non-covalent patterns inside gel networks were perceived through field emission scanning electron microscopy, atomic force microscopy, and transmission electron microscopy analyses. Fourier transform infrared and electrospray ionization-mass spectral analyses and powder X-ray diffraction analysis of metallogel samples of different gel-establishing ingredients help to investigate the possible supramolecular interactions dictating the metallogel scaffolds. Thermogravimetric analysis of xerogel samples was collected from the synthesized metallogels to understand the thermal stability. These gel materials were characterized by their potential antibacterial efficiency. The potency of metallogels against selective Gram-positive and Gram-negative bacteria was visualized via a spectrophotometer. Human pathogens like Klebsiella pneumoniae (MTCC 109), Salmonella typhi (MTCC 733), Vibrio parahaemolyticus, Bacillus cereus (MTCC 1272), Lactobacillus fermentum (NCDO 955), and Staphylococcus aureus (MTCC 96) are employed in this study. Apart from the biological significance, our metallogels demonstrate as incredible diode performance of fabricated semiconducting systems, which exhibit a considerable amount of non-linearity demonstrating a non-ohmic conduction mechanism at room temperature in dark conditions. Device fabrication was achieved from these metallogels employing the sandwich model with indium tin oxide-coated glass substrates/metallogel/Al structure.

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Amide functional low molecular weight gelator based metallogel

Alam,

Mondal,

Sarma

2024

Coordination Chemistry Reviews

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Heat triggered molecular restructuring results in triple gel–gel–gel transformations in a Li⁺-integrated metallogel

Abstract: Nature upholds many self-regulatory assemblies which adapt themselves according to the external adverse change and modulate their molecular and/or supramolecular structures to transform into another structural form through dynamic evolution....

Cited by 6 publications

References 74 publications

Eu³⁺‐Directed Supramolecular Metallogels with Reversible Quadruple‐Stimuli Response Behaviors

Eu³⁺‐Directed Supramolecular Metallogels with Reversible Quadruple‐Stimuli Response Behaviors

Suberic Acid-Based Supramolecular Metallogels of Ni(II), Zn(II), and Cd(II) for Anti-Pathogenic Activity and Semiconducting Diode Fabrication

Amide functional low molecular weight gelator based metallogel

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Heat triggered molecular restructuring results in triple gel–gel–gel transformations in a Li+-integrated metallogel

Abstract: Nature upholds many self-regulatory assemblies which adapt themselves according to the external adverse change and modulate their molecular and/or supramolecular structures to transform into another structural form through dynamic evolution....

Cited by 6 publications

References 74 publications

Eu3+‐Directed Supramolecular Metallogels with Reversible Quadruple‐Stimuli Response Behaviors

Eu3+‐Directed Supramolecular Metallogels with Reversible Quadruple‐Stimuli Response Behaviors

Suberic Acid-Based Supramolecular Metallogels of Ni(II), Zn(II), and Cd(II) for Anti-Pathogenic Activity and Semiconducting Diode Fabrication

Amide functional low molecular weight gelator based metallogel

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Product

Resources

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Heat triggered molecular restructuring results in triple gel–gel–gel transformations in a Li⁺-integrated metallogel

Eu³⁺‐Directed Supramolecular Metallogels with Reversible Quadruple‐Stimuli Response Behaviors

Eu³⁺‐Directed Supramolecular Metallogels with Reversible Quadruple‐Stimuli Response Behaviors