Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Ferromagnetism Above 200 K in Organic-Ion Intercalated CrSBr
    (American Chemical Society, 2025) Ferreira-Teixeira, S.; Tezze, D.; Ramos, M.; Álvarez-García, C.; Bayındır, B.; Jo, J.; Gobbi, M.
    CrSBr is a van der Waals magnetic semiconductor exhibiting antiferromagnetic order below 140 K. It has emerged as a promising platform for engineering 2D magnetism because its intertwined electronic, optical, and magnetic properties can be profoundly modified via external stimuli such as electrical gating or magnetic fields. However, other strategies for tuning magnetism in layered materials, such as molecular intercalation, remain largely unexplored for CrSBr. Here, we demonstrate that the intercalation of tetramethylammonium (TMA) and tetrapropylammonium (TPA) ions into CrSBr induces a transition from antiferromagnetic to ferromagnetic order, while significantly enhancing the magnetic transition temperature to 190 K (TMA) and 230 K (TPA). The resulting intercalates are air-stable and exhibit large, hysteretic magnetoresistance exceeding 60% at 50 K in the TPA case. Besides, intercalation introduces symmetry-breaking structural changes in each CrSBr plane, revealed by Raman microscopy and corroborated by density functional theory (DFT) calculations. These findings highlight molecular intercalation as a powerful and versatile route to tailor the magnetic properties of CrSBr and unlock its potential to fabricate robust, high-temperature 2D magnetic devices. © 2025 Elsevier B.V., All rights reserved.
  • Article
    Citation - WoS: 2
    Citation - Scopus: 2
    Investigation on the Keggin Anchored on Hydroxide-Functionalized Single-Walled Carbon Nanotubes as Superior Cathode for Aqueous Zinc-Ion Batteries
    (American Chemical Society, 2025) Chilufya, Langson; Sertbaş, Vahide; Aytekin, Ahmet; Karabudak, Engin; Emirdag-Eanes, Mehtap
    Rechargeable aqueous zinc-ion batteries (AZIBs) have become a viable option in electrochemical energy storage systems (EESS) owing to their inherent safety features and economic friendliness. Nonetheless, creating suitable cathode materials for AZIBs with high structural stability, good rate performance, and great capacity remains a significant challenge. Polyoxometalate (POM)-based nanohybrid materials have shown promising results in high cycling stability and great specific capacity. However, POMs susceptible to electrolyte dissolution and the sluggish Zn-ion (Zn2+) kinetics have significantly hampered their electrochemical performance as cathodes for AZIBs. Herein, we present a Keggin POM, K<inf>3</inf>[PW<inf>12</inf>O<inf>40</inf>]·nH<inf>2</inf>O (KPW<inf>12</inf>), anchored on hydroxyl (OH)-functionalized single-walled carbon nanotubes (SWOH) that were fabricated via a facile ultrasonication procedure. Employed as cathodes for AZIBs, the optimal KPW<inf>12</inf>/SWOH feature exhibited remarkable electrochemical performance. The system satisfied the Zn2+storage, achieving a reversible discharge capacity of 183 mAh g–1at a high current density of 5C with a flat and long discharge plateau after 160 cycles. The perfect synergistic contribution of the pseudocapacitive nature of the super-reduced state of KPW<inf>12</inf>and the electron-conductive network of SWOH was attributed to this exceptional electrochemical performance. Furthermore, the presence of oxygen in SWOH enhanced the transfer kinetics of electrons and smooth Zn2+diffusion while lowering the Zn2+migration energy barrier by providing more accessible active sites. This demonstrates remarkable promise in fabricating robust electrode materials optimized for integration within aqueous battery systems that pave the way for further research into POM-based materials for EESS. © 2025 Elsevier B.V., All rights reserved.
  • Article
    Silver-Loaded Titania-Based Metal-Organic Frameworks as a Platform for Silver Ion Release for Antibacterial Applications
    (American Chemical Society, 2025) Mazare, Anca; Goldmann, Wolfgang Heinrich; Kocak, Esra; Osuagwu, Benedict; Qin, Shanshan; Cao, Ran; Schmuki, Patrik
    Conventional Ag-decorated TiO<inf>2</inf>coatings suffer from low adsorption capacity and burst release kinetics, limiting long-term antibacterial efficacy and risking cytotoxicity. An entirely different payload release approach can be based on metal–organic frameworks (MOFs), which offer tunable porosity, high surface area, and internal diffusion channels. Here, we report a thermally stabilized Ti-based MOF [NH<inf>2</inf>-MIL-125(Ti)] functionalized with Ag+via reactive deposition, enabling high Ag loading (∼14.7 wt %) and sustained release. Annealing at 250 °C enhances aqueous stability, allowing diffusion-governed Ag+delivery over >48 h, with 77% of the Ag still present in the MOF after a 24 h release. The system exhibits dose-dependent antibacterial activity in powders and comparable efficacy in coatings, with a more gradual release profile. This scalable platform is promising for long-acting coatings, wound interfaces, and implantable materials. © 2025 Elsevier B.V., All rights reserved.
  • Article
    Citation - WoS: 8
    Citation - Scopus: 6
    Effect of external electric field on fluidization of rodlike particles using CFD-DEM
    (American Chemical Society, 2024) Kazemi, Saman; Aali, Hamed; Larijani, Roxana Saghafian; Zarghami, Reza; Liu, Helei; Mostoufi, Navid
    Given the significant impact of an external electric field on fluidized bed hydrodynamics and the practical importance of rodlike particles, this study examines the behavior of a fluidized bed containing rodlike particles under various external electric fields. Simulations were performed using a coupled computational fluid dynamics-discrete element method, and rodlike particles were generated using a multisphere approach aided by quaternions. The effect of different vertical and horizontal external electric fields on the orientation of particles was investigated. Also, the effect of particle size on their orientation in the presence of constant vertical and horizontal external electric fields was explored in this work. The results showed that increasing the electric field strength and reducing the size of rodlike particles lead to an increment in the tendency of particles to become oriented along the direction of the electric field. Moreover, the effect of the external electric field at various inlet gas velocities on the probability distribution of the porosity in the bed was studied. Finally, the effect of vertical and horizontal electric fields on the bubble diameter was examined. This study offers a deeper understanding of the fluidization of rodlike particles in the presence of an electric field, and its findings can be applied to design and optimize related processes.
  • Review
    Citation - WoS: 41
    Citation - Scopus: 43
    Electrochemical Sensors in the Food Sector: a Review
    (American Chemical Society, 2024) Ghaani, Masoud; Azimzadeh, Mostafa; Büyüktaş, Duygu; Carullo, Daniele; Farris, Stefano
    In a world that is becoming increasingly concerned with health, safety, and the sustainability of food supply chains, the control and assurance of food quality have become of utmost importance. This review examines the application and potential of electrochemical sensors in the dynamic field of food science to meet these expanding demands. The article introduces electrochemical sensors and describes their operational mechanics and the components contributing to their function. A summary of the most prevalent electrochemical methods outlines the diverse food analysis techniques available. The review shifts to discussing the food science applications of these sensors, highlighting their crucial role in detecting compounds in food samples like meat, fish, juice, and milk for contemporary quality control. This paper showcases electrochemical sensors' utility in food analysis, underscoring their significance as powerful, efficient tools for maintaining food safety and how they could transform our approach to global food quality control and assurance.
  • Review
    Citation - WoS: 14
    Citation - Scopus: 8
    Recent Progress on Synthesis and Properties of Black Phosphorus and Phosphorene as New-Age Nanomaterials for Water Decontamination
    (American Chemical Society, 2023) Goren,A.; Gungormus,E.; Vatanpour,V.; Yoon,Y.; Khataee,A.
    Concerted efforts have been made in recent years to find solutions to water and wastewater treatment challenges and eliminate the difficulties associated with treatment methods. Various techniques are used to ensure the recycling and reuse of water resources. Owing to their excellent chemical, physical, and biological properties, nanomaterials play an important role when integrated into water/wastewater treatment technologies. Black phosphorus (BP) is a potential nanomaterial candidate for water and wastewater treatment, especially its monolayer 2D derivative called phosphorene. Phosphorene offers relative adjustability in its direct bandgap, high charge carrier mobility, and improved in-plane anisotropy compared to the most extensively studied 2D nanomaterials. In this study, we examined the physical and chemical characteristics and synthetic processes of BP and phosphorene. We provide an overview of the latest advancements in the main applications of BP and phosphorene in water/wastewater treatment, which are categorized as photocatalytic, adsorption, and membrane filtration processes. Additionally, we explore the existing difficulties in the integration of BP and phosphorene into water/wastewater treatment technologies and prospects for future research in this field. In summary, this review highlights the ongoing necessity for significant research efforts on the integration of BP and phosphorene in water and wastewater applications. © 2024 American Chemical Society.
  • Article
    Citation - WoS: 6
    Citation - Scopus: 6
    Weak Dependence of Voltage Amplification in a Semiconductor Channel on Strain State and Thickness of a Multidomain Ferroelectric in a Bilayer Gate
    (American Chemical Society, 2023) Misirlioglu, I.B.; Yapici, M.K.; Sendur, K.; Okatan, M.B.
    Ferroelectric/dielectric layered stacks are of special interest as gate oxides in the pursuit of designing low-power transistors, where the electrostatics of such stacks are thought to provide a means to allow for voltage amplification in the semiconductor channel. Strain and thickness dependence of the response of such a gate stack in relation to voltage amplification in a semiconductor channel becomes important to identify, which is what we study in this work using a thermodynamic approach. For a ferroelectric multidomain state as the stable phase in the stack, our findings show that a limited magnitude of voltage amplification appears to be feasible. Voltage amplification at the semiconductor surface is computed to hardly exceed 1.2 in thick bilayers (40 nm) for strains stabilizing the multidomain state and attains even less than this value for the thinner stacks. © 2023 American Chemical Society.
  • Article
    Citation - WoS: 2
    Citation - Scopus: 2
    Plasmonic Functional Assay Platform Determines the Therapeutic Profile of Cancer Cells
    (American Chemical Society, 2023) Çetin, Arif E.; Topkaya, Seda Nur; Yazıcı, Ziya Ata; Yalçın Özuysal, Özden
    Functional assay platforms could identify the biophysicalpropertiesof cells and their therapeutic response to drug treatments. Despitetheir strong ability to assess cellular pathways, functional assaysrequire large tissue samples, long-term cell culture, and bulk measurements.Even though such a drawback is still valid, these limitations didnot hinder the interest in these platforms for their capacity to revealdrug susceptibility. Some of the limitations could be overcome withsingle-cell functional assays by identifying subpopulations usingsmall sample volumes. Along this direction, in this article, we developeda high-throughput plasmonic functional assay platform to identifythe growth profile of cells and their therapeutic profile under therapiesusing mass and growth rate statistics of individual cells. Our technologycould determine populations' growth profiles using the growthrate data of multiple single cells of the same population. Evaluatingspectral variations based on the plasmonic diffraction field intensityimages in real time, we could simultaneously monitor the mass changefor the cells within the field of view of a camera with the capacityof > & SIM;500 cells/h scanning rate. Our technology could determinethe therapeutic profile of cells under cancer drugs within few hours,while the classical techniques require days to show reduction in viabilitydue to antitumor effects. The platform could reveal the heterogeneitywithin the therapeutic profile of populations and determine subpopulationsshowing resistance to drug therapies. As a proof-of-principle demonstration,we studied the growth profile of MCF-7 cells and their therapeuticbehavior to standard-of-care drugs that have antitumor effects asshown in the literature, including difluoromethylornithine (DFMO),5-fluorouracil (5-FU), paclitaxel (PTX), and doxorubicin (Dox). Wesuccessfully demonstrated the resistant behavior of an MCF-7 variantthat could survive in the presence of DFMO. More importantly, we couldprecisely identify synergic and antagonistic effects of drug combinationsbased on the order of use in cancer therapy. Rapidly assessing thetherapeutic profile of cancer cells, our plasmonic functional assayplatform could be used to reveal personalized drug therapies for cancerpatients.
  • Book Part
    The Role of Polyurethane Foam Indoors in the Fate of Flame Retardants and Other Semivolatile Organic Compounds
    (American Chemical Society, 2021) Genişoğlu, Mesut; Sofuoğlu, Sait Cemil; Sofuoğlu, Aysun
    Flame retardant chemicals are added to polyurethane foams (PUFs) during production. These chemicals are released to the environment during the use of PUF containing furniture or building materials. In contrast, organic pollutants such as polychlorinated biphenyls, polycyclic aromatic hydrocarbons, synthetic musk compounds, and volatile organic compounds could be sorbed by PUF depending on the concentration gradient, ambient temperature, and the physicochemical properties. Most of these substances tend to accumulate by adhering to organic matter in dust, particles, and surfaces, as they do not degrade for long periods of time. Sorption-emission cycles of PUF-associated organic compounds prolong their presence in indoor environments, which could increase human exposure. Since these organic compounds might have carcinogenic or chronic-toxic health effects on living organisms, it is important to understand the role of PUF in exposure to these substances in indoor environments. This chapter reviews the literature on the relationship of organic substances with PUF in indoor environments.
  • Article
    Citation - WoS: 16
    Citation - Scopus: 16
    Silylethynyl substitution for preventing aggregate formation in perylene diimides
    (American Chemical Society, 2021) Aksoy, Erkan; Danos, Andrew; Li, Chunyong; Monkman, Andrew P.; Varlıklı, Canan
    Ethynylene-bridged perylene diimides (PDIs) with different sized silane groups have been synthesized as a steric blocking group to prevent the formation of non-radiative trap sites, for example, strong H-aggregates and other dimers or excimers. Excited singlet-state exciton dynamics were investigated by time-resolved photoluminescence and ultrafast pump-probe transient absorption spectroscopy. The spectra of the excimer or dimer aggregates formed by the PDIs at high concentrations were also determined. Although the photophysical properties of the bare and shielded PDIs are identical at micromolar concentrations, more shielded PDI2 and PDI3 exhibited resistance to aggregation, retaining higher photoluminescence quantum yield even at 10 mM concentration and in neat films. The PDIs also exhibited high photostability (1 h of continuous excitation), as well as electrochemical stability (multiple cycles with cyclic voltammetry). Prevention of dimer/aggregate formation in this manner will extend the uses of PDIs to a variety of high concentration photonics and optoelectronic applications, such as organic light-emitting diodes, organic photovoltaics, and luminescent solar concentrators.