New bent-shaped azomethine monomers for optical applications

Ovdenko, V. N.; Kolendo, A.

doi:10.1080/15421406.2016.1257301

Cited by 11 publications

(8 citation statements)

References 35 publications

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“…4-Formylphenyl methacrylate (FPMA) and 2-(1-carboxy methylethylsulfanylthiocarbonylsulfanyl)-2-methylpropionic acid (CTP) were synthesized as previously reported. , [2-(Methacryloyloxy)ethyl] trimethylammonium chloride solution (META, 80 wt % in H 2 O, stabilized with 600 ppm MEHQ), N -isopropylacrylamide (NIPAM, 97%), 4,4′-azobis(4-cyanovaleric acid) (ACVA, 98%) and branched PEI ( M w ≈ 25 000) were purchased from Sigma-Aldrich. Organic solvents were purchased from Caledon Laboratories Ltd. (Canada) and used without further purification.…”

Section: Methodsmentioning

confidence: 99%

Injectable, Self-Healing Hydrogel with Tunable Optical, Mechanical, and Antimicrobial Properties

Wang

Gong

et al. 2019

Chem. Mater.

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Injectable self-healing hydrogels, as implanted materials, have received great attention over the past decades. The tunable optical and mechanical properties as well as the ability to lower the risk of inflammatory responses are essential considerations for their applications in diverse bioengineering processes. In this work, we report a novel injectable selfhealing hydrogel with tunable optical, mechanical, and antimicrobial properties, fabricated by a multifunctional ABA triblock copolymer gelator, poly{(4 (methacryloyloxy)ethyl] trimethylammonium chloride]} and polyethylenimine. The self-healing capability of the hydrogel was demonstrated by rheology tests, and quantitative force measurements using a surface forces apparatus (SFA) provided molecular insights into the self-healing mechanism of Schiff base reaction. Additionally, the optical and mechanical properties of the hydrogel can be fine-tuned in a sensitive temperature-responsive manner because of the local nano-hydrophobic domains formed through the phase transition of the ABA triblock copolymer gelator. The hydrogel also demonstrated multiple sol−gel transitions subjected to pH change. Moreover, the hydrogel can also effectively inhibit the growth of both Gram-negative and Gram-positive bacteria (Escherichia coli and Staphylococcus aureus), while showing low cytotoxicity to both fibroblast and cancer cells (MRC-5 and HeLa). The novel multifunctional injectable self-healing hydrogel with tunable optical, mechanical, and excellent antimicrobial properties shows great potential in various bioengineering applications.

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Section: Methodsmentioning

confidence: 99%

Injectable, Self-Healing Hydrogel with Tunable Optical, Mechanical, and Antimicrobial Properties

Wang

Gong

et al. 2019

Chem. Mater.

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“…FPMA was prepared from 4-hydroxybenzaldehyde and methacryloyl chloride (Scheme S1) following the procedure in the previous report. 29 Proton nuclear magnetic resonance spectra ( 1 H NMR) of CTA and FPMA were recorded with a Varian spectrometer at 500 MHz; DMSO-d 6 was used as a solvent (Figures S1 and S2). The (MPC-st-FPMA) and (META-st-FPMA) were synthesized via RAFT polymerization of FPMA with either MPC or META and a targeted degree of polymerization of 130.…”

Section: Synthesis Of Mpf and Mtf Copolymersmentioning

confidence: 99%

Mussel-Inspired Polymer-Based Coating Technology for Antifouling and Antibacterial Properties

Imbia,

Ounkaew,

Mao

et al. 2024

Langmuir

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Zwitterionic coatings provide a promising antifouling strategy against biofouling adhesion. Quaternary ammonium cationic polymers can effectively kill bacteria on the surface, owing to their positive charges. This strategy can avoid the release of toxic biocides, which is highly desirable for constructing coatings for biomedical devices. The present work aims to develop a facile method by covalently grafting zwitterionic and cationic copolymers containing aldehydes to the remaining amine groups of selfpolymerized dopamine. Reversible addition−fragmentation chain transfer polymerization was used to copolymerize either zwitterionic 2-methacryloyloxyethyl phosphorylcholine monomer (MPC) or cationic 2-(methacryloyloxy)ethyl trimethylammonium monomer (META) with 4-formyl phenyl methacrylate monomer (FPMA), and the formed copolymers poly(MPC-st-FPMA) and poly(META-st-FPMA) are denoted as MPF and MTF, respectively. MPF and MTF copolymers were then covalently grafted onto the amino groups of polydopamine-coated surfaces. PDA/MPF/MTF-coated surfaces exhibited antibacterial and antifouling properties against S. aureus, E. coli, and bovine serum albumin protein. In addition, they showed excellent viability of normal human lung fibroblast cells MRC-5. We expect the facile surface modification strategy discussed here to be applicable to medical device manufacturing.

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“…Використання SnO2 у нанорозмірному стані суттєво впливає на чутливість сенсора, адже зменшення розміру його кристалітів приводить до значного збільшення впливу на властивості матеріалу саме поверхневих явищ, таких як хемосорбція кисню на поверхні, яка відіграє визначальну роль у формуванні чутливості адсорбційно-напівпровідникового сенсора [6]. Ще однією можливістю впливати на характеристики адсорбційно-напівпровідникових сенсорів є допування газочутливого шару різними металами-каталізаторами окиснення газу, що аналізується, у даному випадку -CO. Відомо, що найактивнішими металічними каталізаторами в реакції окиснення CO є метали платинової групи, які можуть функціонувати в широкому інтервалі їх температур [7][8][9].…”

Section: Synthesis and Optical Properties Of New Symmetric Pyrazol-counclassified

“…Синтез біс-альдегіду 1 описано раніше у роботах [7,8]. Синтез 4,4'-((2-гідроксипропан-1,3-диіл)біс(оксі)) дибензальдегіду.…”

unclassified

Synthesis and Optical Properties of New Symmetric Pyrazol-Contained Heterocycles and the Perspective of Development of Holographic Medium Based on It

Vyshnevskyi

Ovdenko

Павлов

et al. 2018

Bull. T. Shevchenko Nat. Univ. Kyiv. Chem.

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By the interaction of a symmetric bis-aldehyde with 1-phenyl-3-methylpyrazolone-5, a new symmetrical dye capable of photoinduced isomerization was obtained. Recording media (RM) based on synthesized dye and soft polymer matrix were prepared. Intensity of absorption of RM rises with increasing of dye percentage in polymer matrix. But, Beer-Lambert law is not fulfilled. Therefore, the partial aggregation of dye molecules is present. As in the case of azo-compounds, information recording proceeds, probably, through spatial changes caused by the photoinduced E,Z double bond isomerization. Recorded holograms have the polarization nature – it was proved by the quenching of diffraction orders during changing the polarization of reference beam from е1⊥e2 to е1║е2. It was shown that compounds containing the –НС=С< bond, where =С< is the part of heterocyclic moiety are able to the isomerization. The diffraction efficiency is expected to be higher due to presence of two photoactive groups in symmetric molecule, comparing with molecules with one photoactive group. Light absorption with λ=532 nm by the dye molecules is proved to be sufficient for holograms recording and relaxation despite the low adsorption intensity at such wavelength. The recording and relaxation speed are high. Fast increasing of η in the beginning of hologram exposition and, after turning off the illumination beam, fast decay, according to the η||(t) and η⊥(t) curves. Hence, this polymer composite is capable for further applications in dynamic holography. It was shown that increasing of dye amount in polymer matrix leads to growth of diffraction efficiency. It has been established that data recording media is characterized by higher values of diffraction efficiency with parallel polarization compared to perpendicular.

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New bent-shaped azomethine monomers for optical applications

Cited by 11 publications

References 35 publications

Injectable, Self-Healing Hydrogel with Tunable Optical, Mechanical, and Antimicrobial Properties

Injectable, Self-Healing Hydrogel with Tunable Optical, Mechanical, and Antimicrobial Properties

Mussel-Inspired Polymer-Based Coating Technology for Antifouling and Antibacterial Properties

Synthesis and Optical Properties of New Symmetric Pyrazol-Contained Heterocycles and the Perspective of Development of Holographic Medium Based on It

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