Conformational relaxation of ethylene-propylene-diene terpolymer at a solid interface

Uchida, Kiminori; Mita, Kazuki; Yamamoto, Satoru; Tanaka, Keiji

doi:10.1038/s41428-023-00764-x

Cited by 9 publications

(4 citation statements)

References 55 publications

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“…39,40 A significant component of nanomedicine focuses on DDSs, featuring nano-sized, soft nanoparticles like liposomes, lipid nanoparticles, polymeric nanoparticles, polymer-drug conjugates, dendrimers, and hydrogels, alongside hard nanoparticles such as carbon nanotubes, gold nanoparticles, and metalorganic frameworks. 29,[41][42][43][44][45] Among these, nanocarriers based on polymers offer several distinct advantages such as easy synthetic methods, tunable chemical and physical properties, incorporation of both hydrophilic and hydrophobic drugs and relatively higher stability than those based on liposomes. Biodegradable units can be easily integrated into polymers that greatly contribute to the controlled drug release from the nanocarrier in a sustainable manner.…”

Section: Ideal Size Range For Best Performancementioning

confidence: 99%

Sub-100 nm carriers by template polymerization for drug delivery applications

Hashim,

Abdrabou

2024

Nanoscale Horiz.

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Section: Ideal Size Range For Best Performancementioning

confidence: 99%

Sub-100 nm carriers by template polymerization for drug delivery applications

Hashim,

Abdrabou

2024

Nanoscale Horiz.

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“…Interface-sensitive characterizations with high spatial resolution, providing multiscale structural information about adhesive molecules at the interface, are essential to verify the above-mentioned theories. Sum frequency generation (SFG) spectroscopy − and soft X-ray absorption − have shown that functional groups of adsorbed chains are oriented at the outermost surface of the adherends. Real-space observation, such as electron microscopy, − has revealed the possibility of an interlocking or anchoring effect, , as described by the mechanical theory.…”

Section: Introductionmentioning

confidence: 99%

Electronic Interaction of Epoxy Resin with Copper at the Adhered Interface

Saeki,

Kawaguchi,

Tsuji

et al. 2024

Langmuir

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A better understanding of the aggregation states of adhesive molecules in the interfacial region with an adherend is crucial for controlling the adhesion strength and is of great inherent academic interest. The adhesion mechanism has been described through four theories: adsorption, mechanical, diffusion, and electronic. While interfacial characterization techniques have been developed to validate the aforementioned theories, that related to the electronic theory has not yet been thoroughly studied. We here directly detected the electronic interaction between a commonly used thermosetting adhesive, cured epoxy of diglycidyl ether of bisphenol A (DGEBA) and 4,4′-diaminodiphenylmethane (DDM), and copper (Cu). This study used a combination of density functional theory (DFT) calculations and femtosecond transient absorption spectroscopic (TAS) measurements as this epoxy adhesive-Cu pairing is extensively used in electronic device packaging. The DFT calculations predicted that π electrons in a DDM molecule adsorbed onto the Cu surface flowed out onto the Cu surface, resulting in a positive charge on the DDM. TAS measurements for the Cu/epoxy multilayer film, a model sample containing many metal/adhesive interfaces, revealed that the electronic states of excited DDM moieties at the Cu interface were different from those in the bulk region. These results were in good accordance with the prediction by DFT calculations. Thus, it can be concluded that TAS is applicable to characterize the electronic interaction of adhesives with metal adherends in a nondestructive manner.

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“…Research interest has surged in the investigation of transition metal coordination compounds that incorporate organic ligands, driven by their captivating structural arrangements and intricate network architectures [1][2][3][4][5][6][7]. The design, synthesis and development of metal-organic compounds with specific dimensionalities hinge upon diverse synthetic parameters, including metal-ion coordination with organic ligands, choice of solvent and reaction conditions [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

‘Charge Reverse’ Halogen Bonding Contacts in Metal-Organic Multi-Component Compounds: Antiproliferative Evaluation and Theoretical Studies

Banik,

Baishya,

Gomila

et al. 2024

Inorganics

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Two new metal–organic multi-component compounds of Ni(II) and Co(II), viz. [Ni(3-CNpy)2(H2O)4]ADS·2.75H2O (1) and [Co(3-CNpy)2(H2O)4](4-ClbzSO3)2 (2) (3-CNpy = 3-cyanopyridine, ADS = anthraquinone-1,5-disulfonate, 4-ClbzSO3 = 4-chlorobenzenesulfonate), were synthesized and characterized using single crystal XRD, TGA, spectroscopic (IR, electronic) and elemental analyses. Both the compounds crystallize as multi-component compounds of Ni(II) and Co(II), with uncoordinated ADS and 4-ClbzSO3 moieties in the crystal lattice, respectively. Crystal structure analyses revealed the presence of antiparallel nitrile···nitrile and π-stacked assemblies involving alternate coordinated 3-CNpy and uncoordinated ADS and 4-ClbzSO3 moieties. Moreover, unconventional charge reverse Cl∙∙∙N halogen bonding contacts observed in compound 2 provide additional reinforcement to the crystal structure. Theoretical calculations confirm that the H-bonding interactions, along with anion–π(arene) and anion–π(CN) in 1 and π–π, antiparallel CN···CN and charge reverse Cl···N halogen bonds in 2, play crucial roles in the solid state stability of the compounds. In vitro anticancer activities observed through the trypan blue cell cytotoxicity assay reveal that the compounds induce significant concentration dependent cytotoxicity in Dalton’s lymphoma (DL) cancer cells, with nominal effects in normal healthy cells. Molecular docking studies reveal that the compounds can effectively bind with the active sites of anti-apoptotic proteins, which are actively involved in cancer progression.

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Conformational relaxation of ethylene-propylene-diene terpolymer at a solid interface

Cited by 9 publications

References 55 publications

Sub-100 nm carriers by template polymerization for drug delivery applications

Sub-100 nm carriers by template polymerization for drug delivery applications

Electronic Interaction of Epoxy Resin with Copper at the Adhered Interface

‘Charge Reverse’ Halogen Bonding Contacts in Metal-Organic Multi-Component Compounds: Antiproliferative Evaluation and Theoretical Studies

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