Iron porphyrin-modified PVDF membrane as a biomimetic material and its effectiveness on nitric oxide binding

Can, Faruk; Demirci, Osman Cahit; Dumoulin, Fabienne; Erhan, Elif; Arslan, Leyla Çolakerol; Ergenekon, Pınar

doi:10.1016/j.apsusc.2017.05.183

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…We detected only a weak Fe 2p 3/2 signal in the high-resolution spectra, corresponding to approximately 0.02 atom % or 0.1 wt % of the total including C 1s, N 1s, and O 1s signals. Additionally, no Fe–N coordination peak was observed in the N 1s spectrum, indicating that the imine bond did not coordinate with iron. − No metallic iron (Fe 0 ) peak was found in the iron element spectra, indicating that Fe 3+ was not reduced into metallic iron nanoparticles by 1-butanol during the reaction process. Additionally, inductively coupled plasma–optical emission spectrometry (ICP-OES) indicated that the iron content was 0.13 wt %, similar to the value measured via XPS.…”

Section: Results and Discussionmentioning

confidence: 99%

Rapid, Ambient Temperature Synthesis of Imine Covalent Organic Frameworks Catalyzed by Transition-Metal Nitrates

et al. 2021

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Covalent Organic Frameworks (COFs) are crystalline, porous organic materials with promise for applications including catalysis, energy storage, electronics, gas storage, water treatment, and drug delivery. Conventional solvothermal synthesis approaches to COFs require elevated temperatures, inert reaction environments, and long reaction times. Here, we report that transition metal nitrates can catalyze the rapid synthesis of imine COFs. We tested a series of transition metal nitrates as catalysts for the synthesis of a model COF and found that all transition metal nitrates produced crystalline COF products for reactions conducted at ambient temperatures. The reactions were insensitive to the presence of oxygen. Fe(NO3)3• 9H2O was found to produce the most crystalline product, and by optimizing the catalyst loading we found that crystalline COF could be produced within 10 minutes. We further tested Fe(NO3)3• 9H2O as a catalyst for 6 different COF targets varying in linker lengths, substituents, and stabilities, and found that Fe(NO3)3• 9H2O effectively catalyzed the synthesis of all imine COFs tested. This work demonstrates a simple, low-cost approach for the synthesis of imine COFs and will significantly lower the barrier for the development of imine COFs for various applications.Covalent organic frameworks (COFs) are crystalline and porous organic networks that have shown promise for applications including catalysis, energy storage, electronics, gas storage, water treatment, membrane separations, and drug delivery. [1][2][3][4][5] Imine COFs are of particular interest for applications because they exhibit excellent stability in water and various organic solvents. 5 However, imine COFs are typically synthesized in batch, high temperature (120 ℃) solvothermal or hydrothermal reactions that require 3 days or longer to achieve significant yields and good crystallinity. 3,[5][6][7] Hence, simpler, lower-cost, and more rapid approaches to the synthesis of imine COFs are needed.A number of studies have explored alternative, faster, and less energy-intensive approaches to the synthesis of imine COFs.Marder and coworkers developed an approach to produce imine COFs under solvothermal conditions within four hours using mild activation procedures to avoid pore collapse. 8 Wang and coworkers developed a general method to synthesize imine COFs in 160 seconds under electron bean radiation. 9 Exposure to light, 10 reaction in a microwave, 11,12 and sonication 13 can also promote reversible reactions and tremendously decrease the required reaction time. In

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Section: Results and Discussionmentioning

confidence: 99%

Rapid, Ambient Temperature Synthesis of Imine Covalent Organic Frameworks Catalyzed by Transition-Metal Nitrates

et al. 2021

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“…14,18 Researches related to the treatment of polymer surfaces of poly (vinylidene fluoride) (PVDF) and poly (ether-sulfone) (PES) have found that the use of nonthermal plasma has improved the antifouling properties of the surface and promoted biocompatibility with new functional groups. 19,20 Meanwhile, it has been reported that the polymer surfaces treated with plasma may have aging or reversible effects, that is, the surface characteristics undergo a change over the storage time. 12,21,22 Basically, what happens is that the modifications caused by the plasma treatment do not occur only during the exposure or in the moments just after the treatment, but also after long times after the treatment, once the active sites on the surface continue to react.…”

Section: Introductionmentioning

confidence: 99%

“…Several researches have demonstrated that these changes are unique and depend on the gas applied to produce the plasma, the type of membrane polymer, and the operating conditions such as pressure and temperature 14,18 . Researches related to the treatment of polymer surfaces of poly (vinylidene fluoride) (PVDF) and poly (ether‐sulfone) (PES) have found that the use of nonthermal plasma has improved the antifouling properties of the surface and promoted biocompatibility with new functional groups 19,20 …”

Section: Introductionmentioning

confidence: 99%

Simple approach for the plasma treatment of polymeric membranes and investigation of the aging effect

Marques

Silveira

Leite

et al. 2021

J of Applied Polymer Sci

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The modification of the surface characteristics after treatment with plasma in polymeric materials, such as the aging phenomenon, calls the attention of research in the area of nonthermal plasma technology. In this work, a direct treatment with dielectric-barrier discharge plasma was used on the surfaces of ultrafiltration membranes. The measurements of the contact angle with water, attenuated total reflectance accessory, zeta potential, atomic force microscopy and scanning electron microscopy-MEV were performed on the surfaces to verify changes after plasma treatment and to understand the occurrence and timing of the plasma aging effect. In the analysis of the membrane performance, hydraulic permeation and protein retention tests were performed. The results showed an improvement in wettability and hydrophilic properties in the post-treated membranes. The study of reversibility/aging of the postplasma surface is important for research that deals with the modification of polymeric membranes. Changes in surface morphology, topography and wettability of the membranes were observed up to seven days after treatment, with a tendency to return to the initial characteristics of the membranes.

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“…2p 1/2 and Fe 3? 2p 1/2 , respectively, and a satellite at 729.09 eV [49,62,67,68]. Interestingly, the positively Fe d?…”

Section: Xps Electronic Structure Characterizationsmentioning

confidence: 96%

Efficacy assessment of metalloporphyrins as functional materials for photodetection applications: role of central tetrapyrrole metal ions

2022

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Despite the continued research, it is still not entirely clear how important characteristics of metalloporphyrins are exploited for optoelectronic applications. Consequently, the stimulant aim for this work is to design and implement organic/inorganic heterojunctions based on metalloporphyrins (CuTPP, NiTPP, FeTPPCl, and MnTPPCl)/n-Si and evolve their photodetection performance. To evaluate the performance variation of variously manufactured photodetectors, structural characterizations using XRD, Raman spectroscopy, XPS, and AFM are combined with optical absorption and photoluminescence. Core level emissions are used to unveil the deposited films’ electronic and structural features. The estimated energy gap values are found to be 2.4, 2.53, 2.49, and 2.43 eV for CuTPP. NiTPP. FeTPPCl, and MnTPPCl, respectively. The fabricated devices’ PL-spectra are analyzed, where CuTPP exhibited the lowest value of excitonic binding energy. The photodetection performance is evaluated via the J–V relation under dark and various radiant illumination power. The microelectronic parameters of the manufactured heterojunctions are estimated. Ultimately, the photodetectors' figures of merit are estimated for all the fabricated devices, where CuTPP/n-Si heterojunction achieved the best performance and highest values of R = 11.95 mA/W, D* = 8.7 × 109 Jones, LDR = 46.18 dB, SNR = 203.4, and trise/tfall = 51.32/54.29 ms. Consequently, MTPP-based photoreceptors would play an active role as a powerful tool for light detection soon. Graphical abstract

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Iron porphyrin-modified PVDF membrane as a biomimetic material and its effectiveness on nitric oxide binding

Cited by 7 publications

References 23 publications

Rapid, Ambient Temperature Synthesis of Imine Covalent Organic Frameworks Catalyzed by Transition-Metal Nitrates

Rapid, Ambient Temperature Synthesis of Imine Covalent Organic Frameworks Catalyzed by Transition-Metal Nitrates

Simple approach for the plasma treatment of polymeric membranes and investigation of the aging effect

Efficacy assessment of metalloporphyrins as functional materials for photodetection applications: role of central tetrapyrrole metal ions

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