Article
Chemistry, Organic
Anton S. Makarov, Arthur N. Bakiev, Diana A. Eshmemeteva
Summary: We present a metal- and additive-free method for synthesizing meta-substituted anilines using commercially available or one-step accessible substituted methylvinyl ketones, N-acylpyridinium salts, and primary/secondary alkyl- and arylamines. This method enables the synthesis of anilines with uncommon substitution patterns and has potential applications in medicinal chemistry and materials science.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Peng Cheng, Mohamed Sarakha, Christine Mousty, Pierre Bonnet, Gilles Mailhot
Summary: The aim of this study was to prepare an Fe3O4/Tetra-n-butylammonium decatungstate (TBADT) catalyst for the selective oxidation of aromatic amine compounds using hydrogen peroxide (H2O2). The material M-DT, made from the interaction between TBADT and Fe3O4, was fully characterized. The M-DT catalyst showed efficient and selective conversion of sulfapyridine to nitroso-sulfapyridine in the presence of H2O2.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Applied
Piotr Cyganowski, Joanna Wolska
Summary: This study presents a new approach for synthesizing aromatic amines using nitroaromatic compounds (NARs) in contaminated wastewaters. The researchers developed anion exchange membranes with gold nanoparticles (AuNPs) to simultaneously reduce and separate the NARs. The nanocomposite membranes formed using tetrahydrofuran (THF) showed better performance in the reduction and separation process.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Chemistry, Analytical
Jingjing Yu, Lili Shi, Yuxin Liu, Wei Liu, Mantang Chen, Xuehui Sun, Cong Nie, Fuwei Xie
Summary: In this study, a sulfonated covalent triazine frameworks (CTF-SO3H) material was developed as a solid phase extraction (SPE) absorbent for efficient enrichment and determination of carcinogenic substances in tobacco smoke. The results showed that the developed method had high enrichment efficiency, good recovery rate, high precision, and was cost-effective.
MICROCHEMICAL JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Hua-Dong Dong, Jian-Ping Zhao, Ming-Xing Peng, Yong-Hui Zhang
Summary: The study found that ZnO-TiC composites exhibit excellent gas sensing performance, which is attributed to the electronic modulation of the Schottky barrier at the interface. Therefore, constructing the ZnO-TiC Schottky barrier is an effective strategy to enhance the performance of gas sensors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Environmental
Anna Kubiak, Marcin Mackiewicz, Magdalena Biesaga, Marcin Karbarz
Summary: In this study, a temperature and pH sensitive microgel was synthesized and applied for the sorption of five bisphenols from aqueous solutions. The microgel showed satisfactory sorption capacity with maximum adsorption capacities ranging from 55 mg/g to 160 mg/g for all five bisphenols.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Hwajin Yun, Yoonjeong Chae, Eunji Kim, Hong Ki Kim, Sukhyeun Jang, Mu-Hyun Baik, Chi Won Ahn, Yonghee Lee
Summary: This study reports a simple but effective strategy to enhance the stability of delaminated MXenes by passivating vulnerable edges with heterocyclic aromatic amines. The functionalized pyrrole MXenes exhibit long-term anti-oxidation in aqueous solutions and higher electrochemical performance as a supercapacitor.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jinghao Wang, Lulu Zuo, Zhiyu Guo, Caoyu Yang, Yuheng Jiang, Xuewei Huang, Lizhu Wu, Zhiyong Tang
Summary: Photoelectrochemistry is an innovative approach to organic synthesis, showing great potential for efficient and selective activation of amine compounds. The developed photoelectrode materials exhibit high efficiency, remarkable repeatability, and good tolerance towards functional groups.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Food Science & Technology
Yanmei Feng, Ying Xu, Wenrui Li, Shasha Chen, Zhuoqun Su, Lingyi Xi, Guoliang Li
Summary: Novel Fe3O4@COP adsorbents were synthesized for effectively enriching HAAs, and a reliable method for HAAs detection was developed by magnetic solid-phase extraction combined with HPLC-MS/MS. Results showed that different thermal processing methods promoted the generation of HAAs, with Norharman and Harman being the predominant HAAs in thermally processed meat products.
Article
Engineering, Chemical
Kovo G. Akpomie, Jeanet Conradie
Summary: In this study, an oleophilic natural organic-silver nanocomposite was successfully synthesized and applied for oil sorption from simulated oil-polluted water. The impregnation of AgNPs enhanced the hydrophobic characteristics of the sorbent and resulted in higher oil uptake compared to the pristine sorbent. The synthesized composite showed efficient oil desorption and reusability, establishing its potential for oil spill treatment.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Review
Biotechnology & Applied Microbiology
Sang-Woo Han, Jong-Shik Shin
Summary: Aromatic L-amino acid decarboxylases (AADCs) catalyze the conversion of aromatic L-amino acids into aromatic monoamines. Microbial AADCs have limited distribution but hold significant potential for biomedical applications.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Food Science & Technology
Hui Teng, Hongting Deng, Chang Zhang, Hui Cao, Qun Huang, Lei Chen
Summary: Meat products contain hazardous compounds called heterocyclic aromatic amines (HAAs) which have carcinogenic and mutagenic properties. Understanding the formation and hazards of HAAs is important for ensuring food safety.
FOOD SCIENCE AND HUMAN WELLNESS
(2023)
Article
Chemistry, Organic
Xian Xu, Qianlin Sun, Xin Xu
Summary: This work presents a chemo- and stereoselective benzylic C(sp(3))-H alkenylation of tertiary ortho-methyl anilines with internal alkynes using a beta-diketiminato scandium catalyst. The protocol offers an efficient method for synthesizing a new family of tertiary ortho-allylanilines in high yields, which can be further transformed into other valuable anilines. A cationic scandium benzyl species was identified as the catalytic intermediate.
Article
Chemistry, Multidisciplinary
Qi Liu, Tian-Xing Zhang, Yadan Zheng, Chun Wang, Ziyao Kang, Yu Zhao, Jingshan Chai, Hua-Bin Li, Dong-Sheng Guo, Yang Liu, Linqi Shi
Summary: CENP, a novel nanoparticle, co-delivers molecular drugs and therapeutic genes for interference-free gene-drug combination cancer therapy, showing significantly enhanced anti-tumor effects. With the potential to be a universal platform adaptable for various drug and gene combinations, CENP holds promise for the development of effective cancer treatments.
Article
Food Science & Technology
Zuzana Miskova, Eva Lorencova, Richardos Nikolaos Salek, Tereza Kolackova, Ludmila Travnikova, Anita Rejdlova, Leona Bunkova, Frantisek Bunka
Summary: The aim of this study was to monitor and evaluate the content of eight biogenic amines (BAs) in 232 samples of wines produced in the Central European region (Zone B). PUT, HIS, TYM, and PEA were the most frequently detected BAs in all tested wine samples. The BA content in red wines was generally higher than in rose and white wines, with 9% of the red wine samples having histamine concentrations above the recommended limit of 10 mg/L.
Article
Chemistry, Analytical
Serkan Erdemir, Mehmet Oguz, Sait Malkondu
Summary: In this study, a new fluorescent probe THI based on electron deficient dicyanovinyl, electron-rich diethylamino, and receptor thiazoline has been developed for the detection of Hg2+ ions. The probe shows reversible recognition behavior towards Hg2+ with S2-. It exhibits high selectivity towards Hg2+ with low detection limit and solvato-chromism properties in tested solvents. Furthermore, it can be used as a fluorescent probe to visualize Hg2+ in living cells without any toxic effect.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Mehmet Oguz, Alev Oguz, Asif Ali Bhatti, Ahmet Kocak, Mustafa Yilmaz
Summary: The compound NBFP has been successfully synthesized for the selective detection of Hg(II) and Al(III) ions, displaying strong binding constants and biocompatibility in living cells. The fluorescent response and stoichiometry of NBFP with metal ions were confirmed, showing promise for living cell imaging applications.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Serkan Erdemir, Sait Malkondu
Summary: A novel colorimetric and fluorescent switch-on probe based on xanthene-triphenylamine was developed for highly selective and sensitive detection of Hg2+. The probe exhibited significant enhancement in fluorescence intensity upon binding with Hg2+ and successfully detected Hg2+ in food and water samples, as well as in live cells for cell imaging studies.
Article
Chemistry, Physical
Serkan Erdemir, Ozcan Kocyigit, Sait Malkondu
Summary: A novel sensory macromolecule has been designed for the recognition of Ca2+ ions, which has demonstrated excellent sensing behavior and can be used for monitoring calcium ions in various environments.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Applied
Alev Oguz, Mehmet Oguz, Ahmed Nuri Kursunlu, Mustafa Yilmaz
Summary: Hydrosulfide and cyanide anions play important roles in daily life, but their excess amounts can cause serious problems to human health. In this study, a water-soluble macrocyclic sensor based on Calix[4]arene is introduced for selective and sensitive detection of cyanide and hydrogen sulfide. The sensor can also be used for detecting cyanide and hydrogen sulfide in living cells.
Article
Chemistry, Physical
Elif Yemisci, Ahmed Nuri Kursunlu, Mehmet Oguz, Alev Oguz, Mustafa Yilmaz
Summary: This study aims to propose a novel macrocyclic probe combined with pillar[5]arene and Bodipy for the analysis of Hg(II) in aqueous medium, real sample, and living cells. The fluorescent probe showed high selectivity and sensitivity towards Hg(II) ions, with a limit of detection of 2.18 x 10(-7) M. It can be used as a reversible and reusable sensor for the detection of Hg(II) in multi-component metal environments, as well as in living cells and real food samples.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Analytical
Serkan Erdemir, Sait Malkondu, Mehmet Oguz
Summary: A novel turn-on near-infrared fluorescence and colorimetric palladium probe has been designed, which demonstrates excellent selectivity, sensitivity, fast response time, NIR fluorescence, high biocompatibility, and low detection limit for palladium detection in water, soil, drug, and living cell samples.
Article
Chemistry, Analytical
Serkan Erdemir, Mehmet Oguz, Sait Malkondu
Summary: A novel near infrared fluorescence probe based on triphenylamine conjugated dicyanoisophorone has been reported for the detection of trace thiophenol. The probe exhibits a turn-on fluorescence response to thiophenol, with an increased quantum yield from 0.011 to 0.142. It has low cytotoxicity, strong anti-interference capability, large Stokes shift, fast response time, and good linear response to PhSH. Practical applicability of the probe has been demonstrated in various applications, including smartphone platform, TLC kit, plant tissue imaging, soil assay, and water analysis.
ANALYTICA CHIMICA ACTA
(2023)
Article
Engineering, Electrical & Electronic
Serkan Erdemir, Duygu Aydin, Mehmet Oguz
Summary: A simple benzothiazolecalixarene-based probe (C-HBT) was designed and constructed for the detection of trace amounts of Zn2+ and Cu2+. The C-HBT probe showed low detection limits of 35.1 and 66.7 nM for Zn2+ and Cu2+, respectively, with high binding constant values and rapid response. The C-HBT probe was successfully applied for on-site and naked-eye recognition of Zn2+ and Cu2+ using inexpensive smartphone and cotton swab methods. Furthermore, C-HBT exhibited excellent performance for Zn2+ and Cu2+ detection in living cells without significant cytotoxicity.
IEEE SENSORS JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Elif Yemeniciler Kayhan, Ayse Yildirim, Mustafa Baris Kocer, Ahmet Uysal, Mustafa Yilmaz
Summary: A cellulose-based fluorescent probe (Cel-Nap) was developed for detecting Cr(VI), with a low LOD of 1.07 μm in the range of 0.33 x 10-5-3.22 x 10-5 M. The fluorescence and antibacterial properties of UiO-66-Cel-Nap and ZIF-8-Cel-Nap materials were investigated, with ZIF-8-based materials exhibiting better antimicrobial properties. Materials containing Ag+ were found to be more effective against bacteria than those containing AgNPs, and ZIF-8-Cel-Nap-Ag+ was the most effective material with a significant antibacterial effect against E. coli at a MIC value of 0.0024 mg/mL.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Environmental
Serkan Erdemir, Mehmet Oguz, Sait Malkondu
Summary: Researchers have developed a novel fluorescence probe for the sensitive and selective detection of Hg2+, Cu2+, and Thiram. The probe has been successfully applied in real samples and also allows visualization of the ions in cells.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Serkan Erdemir, Sait Malkondu, Mehmet Oguz
Summary: High levels of residual palladium can have serious negative health effects. A novel fluorescent probe has been designed for the rapid detection of palladium and carbon monoxide (CO). The probe can selectively detect Pd and CO with naked eyes and distinguish different species of Pd. The method has practical applications in drug residue and soil analysis, as well as bioimaging of Pd and CO concentration changes in cells.
Article
Engineering, Environmental
Serkan Erdemir, Sait Malkondu, Mehmet Oguz
Summary: Two novel reaction-based ratiometric fluorescence probes (Phe-HBT and Me-HBT) were reported for the selective and sensitive detection of N2H4. The detection of N2H4 at low levels could be visualized by naked eyes under daylight or UV light with a fast response time of about 8.0 min for Phe-HBT and 16.0 min for Me-HBT. Both probes showed high specificities for N2H4 among potential competing analytes, and were successfully applied to detect aqueous trace N2H4 in various samples. The detection of N2H4 was also tested using smartphone application and modified fabric, demonstrating its potential value in practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Elif Ozyilmaz, Mustafa Baris Kocer, Ozge Caglar, Ayse Yildirim, Mustafa Yilmaz
Summary: Metal-organic frameworks (MOFs) have unique properties and are widely used as support materials in enzyme immobilization studies. A new fluorescence-based MOF (UiO-66-Nap) derived from UiO-66 was synthesized to enhance the catalytic activity and stability of Candida rugosa lipase (CRL). The immobilized lipase UiO-66-Nap@CRL showed higher catalytic activity and better stability compared to UiO-66-NH2@CRL, indicating the effectiveness of sulfonate groups present in UiO-66-Nap@CRL.
JOURNAL OF BIOTECHNOLOGY
(2023)
Article
Chemistry, Analytical
Serkan Erdemir, Sait Malkondu, Mehmet Oguz, Ozcan Kocyigit
Summary: Viscosity inside cells plays a crucial role in mass and signal transfer, dispersion of reactive metabolites, and biomacromolecular interactions. This study introduces a new fluorescence probe that responds to intracellular viscosity and detects hydrazine. The probe shows good sensing features with high adaptability, selectivity, sensitivity, ratiometric and fast response, low cytotoxicity, low detection limit, and high signal-to-noise ratio.