Journal of the Turkish Chemical Society Section A Chemistry

As dopamine is an important neurotransmitter involved in neural signaling and certain diseases, it is crucial to detect it in patients to regulate bodily functions. In this study, novel S-doped, P-doped, and S,P-co-doped graphene oxide pencil graphite electrodes were prepared in a single step via the chronoamperometric method for use in a dopamine sensor. The anodic oxidation potentials of dopami…

This study presents the first systematic evaluation of 1-aryl-2-nitroethenes as antimicrobial additives in M-11 lubricating oils. A series of nine substituted derivatives (R = H, p-CH₃, p-OCH₃, o/p-F, o/p-Cl, o/p-OH) were synthesized via Henry condensation and characterized by FT-IR, ¹H NMR, and melting point analysis. Antimicrobial efficacy was assessed against Pseudomonas aeruginosa ATCC 27853,…

Heavy metal pollution, including Cu²⁺, Fe³⁺, and Pb²⁺ is a significant environmental concern due to their toxic nature, posing a risk to living organisms and the environment. Adsorption using bentonite as an adsorbent is an efficient approach for removing heavy metal pollutants from water. This study employs three forms of bentonite: natural bentonite, acid-activated bentonite, and acid-thermal a…

Alkaline zinc-air batteries (ZABs) exhibit high theoretical energy density and capacity, along with intrinsic safety and cost-effectiveness. However, the widespread adoption of ZABs is hindered by various challenges, including the vigorous hydrogen evolution reaction (HER) and zinc dendrite formation, which degrade discharge performance and increase safety risks. This study demonstrates a signifi…

Cisplatin is a widely used chemotherapeutic agent, and its precise & accurate quantification in solutions is crucial because these methods could be further used for its determination in pharmaceutical formulations and biological matrices. Here, a novel, rapid, and reliable reversed-phase isocratic HPLC method was developed and validated for the determination of cisplatin in solution. The …

Gum arabic (GA) is a naturally derived, water-soluble polysaccharide characterized by a complex and highly branched molecular architecture. Structurally, GA consists of a polysaccharide backbone predominantly composed of β-D-galactopyranosyl residues linked through (1→3) glycosidic bonds. It is obtained as a natural exudate from Acacia species, primarily Acacia senegal and Acacia seyal, with its …

In this study, three novel chloro-substituted carbazole–formazan derivatives were synthesized through a diazotization–coupling reaction starting from carbazole-based hydrazone intermediates. The structures of the obtained compounds were elucidated using FT-IR, ¹H NMR, ¹³C NMR, and HRMS spectroscopy (for the p-chloro derivative), all of which confirmed the successful formation of the azo–hydrazone…

In this work, the usability of tamoxifen-loaded alginate/chitosan nanoparticles as a drug release system was investigated. Optimal conditions for nanoparticle preparation were determined, and the nanoparticles were characterized using Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), and scanning electron microscopy (SEM). According to AFM and SEM images, the nanopart…

In this study, a novel silica-supported sorbent functionalized with 1,4-bis[(4-methoxybenzyl) oxy]anthracene-9,10-dione was prepared and applied for the first time for the selective adsorption and preconcentration of Pb(II) and Cd(II) ions from brackish aquaculture water. The sorbent was characterized by FT-IR, ¹H NMR, and SEM-EDX, while kinetic modeling revealed that the adsorption process follo…

Molasses is a widely consumed traditional food product obtained from various fruits and valued for its nutritional and sensory properties. Thermal processing during molasses production promotes Maillard reactions, which contribute to desirable color and flavor development but may also result in the formation of undesirable compounds such as 5-hydroxymethylfurfural (HMF). Elevated HMF levels are a…

The structural, microstructural, and dielectric properties of Eu3+-doped and Eu3+, B3+ co-doped Sr2GdTaO6 double perovskite ceramics were systematically investigated. X-ray diffraction (XRD) analysis confirmed that all samples crystallize in the monoclinic P2₁/n space group with long-range B/B′ ordering, remaining single-phase up to 20 mol% Eu3+ and 70 mol% B3+. The peak-shift analysis revealed a…

A new ligand of Mannich base (5-chloro-3-(dibenzyl amino) (phenyl)methyl) benzo[d]oxazole-2(3H)-thione) (L1) was synthesized. Micro complexes (CuL1) and (ZnL1) were synthesized, and their anti-tumor and antioxidant activity against cancer cells (MCF-7) were investigated. The derivative (L1) has been synthesized through condensation of 5-chloro-2-mercaptobenzoxazole, benzaldehyde with dibenzyl ami…

The rise of antibiotic resistance in pneumonia therapy highlights the urgent need for alternative treatments derived from natural sources. Azadirachta indica leaves contain diverse secondary metabolites with notable antibacterial potential, yet their effects on Streptococcus pneumoniae and Streptococcus pyogenes remain insufficiently characterised. This study evaluated the antibacterial activity …

Herein, strawberry pickles were prepared using varying salt concentrations and subjected to 20 days of fermentation. After fermentation, the pulp and juice fractions of the strawberry pickles were analyzed for their phytochemical profiles, antioxidant activities, enzyme inhibition capacities (angiotensin-converting enzyme-ACE, elastase, and collagenase), microbiological properties, and sensory ch…

This study examines the structural, thermal, and morphological characteristics of polyethylene glycol (PEG) reinforced with functionalized multi-walled carbon nanotubes (F-MWCNTs) at various concentrations (0.5–1.5 wt.%). FTIR analysis verified successful incorporation and interfacial interactions between PEG and functionalised MWCNTs, as evidenced by shifts in –OH and C–O–C vibrational bands, in…

Lipases are versatile green biocatalysts from the hydrolase family, valued for their high selectivity, specificity, and catalytic efficiency in diverse industrial applications, including pharmaceuticals, food, and bioenergy. Their activity and productivity are strongly influenced by a range of physicochemical and operational factors. This review summarizes the key parameters affecting lipase perf…

Photoelectrochemical (PEC) water splitting offers a sustainable route to hydrogen fuel production. Furthermore, titania nanotubular arrays (TNTAs) are promising photoanode materials due to their excellent stability, high surface area, and efficient charge transport; their wide band gap limits visible light absorption and practical efficiency. The study prepared crystalline TNTAs by anodizing tita…

In this study, a dithizone (Di-DHZ) derivative was synthesized, characterized by UV-Vis analysis, used as an ionophore in a potentiometric sensor, and selectively used in Pb2+ ion detection. Di-DHZ compound was synthesized by the reaction of dithizone and iodine in dichloromethane. In UV analyses, distinct bathochromic shifts and complex formations were observed, indicating the formation of dithi…

This review highlights three main topics: advancements in vitrification technology and associated issues like melter corrosion in global facilities, the chemistry and networking of glassy and frit forms of waste, and improvements in vitrified structures that enhance the properties of glass formulations. Borosilicate glass formulations offer various technical advantages for nuclear waste managemen…

Bromhexine-HCl (BHH) can be determined in pharmaceutical formulations and in its pure form using a simple, quick, and affordable spectrophotometric approach. New organic reagents are prepared for the investigation, and 4'-Chloro-4-hydroxychalcone (4-CHC) is chosen as the best reagent. A second stage in the process involves diazotizing BHH, which contains an (NH2) group, using NaNO2, and then reac…