Article
Polymer Science
Imren Taskin, Oznur Gungor, Serap Titretir Duran
Summary: In this study, a poly(3-methylthiophene) modified electrode was developed for the detection of florfenicol. Through investigating the sensor property of the modified electrode, it was found that the selectivity, sensitivity, and response stability of the modified electrode were significantly improved. The developed sensor showed high reproducibility, stability, sensitivity, and selectivity for florfenicol detection in red and chicken meat samples.
Article
Materials Science, Multidisciplinary
Oznur Gungor, Muammer Burc, Chedia Ben Ali Hassine, Suleyman Koytepe, Serap Titretir Duran
Summary: An effective voltammetric sensor was developed for the determination of penicillin G by electro-polymerization. The modified electrode showed significantly increased selectivity and sensitivity compared to the bare electrode. The developed sensor can be applied for penicillin detection in food and biological samples.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Analytical
Muammer Burc, Serap Titretir Duran, Oznur Gungor, Suleyman Koytepe
Summary: A sensitive, fast and low-cost voltammetric sensor has been developed for the determination of gentamicin in biomedical applications. The modified glassy carbon electrode was used for the determination of gentamicin in synthetic urine samples.
Article
Materials Science, Multidisciplinary
Shobith M. Shanbogh, Ashish Varade, Anju Kumari, P. Anjaneyulu
Summary: Von Neumann computing-based memory cannot perform data storage and computation simultaneously, leading to the development of artificial neuromorphic computing (ANC) based on memristor devices, which exhibit multifunctionality. A doped Poly 3-methylthiophene (P3MT) based single layer memristor device, synthesized electrochemically, demonstrates applications in neuromorphic computing when resistance is enhanced to an insulating state by de-doping. The de-doping process induces morphological/structural deformation on the active layer surface, enabling controllable negative differential resistance (NDR), unipolar resistive-switching (RS), multi-level RS (analog memory), and bio-inspired artificial synapse.
Article
Electrochemistry
Sanu K. Anand, Manna Rachel Mathew, K. Girish Kumar
Summary: This study presents a voltammetric sensor for the determination of biogenic amines serotonin and tyramine, using an L-cysteine grafted glassy carbon electrode. The sensor shows excellent performance in terms of peak separation and detection limits for the simultaneous determination of these compounds in synthetic blood serum samples.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Cigdem Dulgerbaki, Aysegul Uygun Oksuz
Summary: This study demonstrates enhanced electrochemical and optical properties of poly(3-methylthiophene)/tungsten oxide (PMeT/WO3) hybrid nanostructures for electrochromic devices. The use of different ionic liquids in the electrodeposition process resulted in PMeT/WO3/BMIMTFSI exhibiting excellent electrochromic performance. Scanning electron microscopy revealed that the spongy network structure in BMIMTFSI medium contributes to the remarkable optical properties of the PMeT/WO3 hybrid.
Article
Engineering, Electrical & Electronic
Srinandhini Subramani, Sheeja Rajiv
Summary: In this study, composites of poly(3-methylthiophene)/poly(ethylene oxide)/ruthenium oxide nanofibers were fabricated using electrospinning technique and evaluated for energy storage applications. The results showed that the accumulation of ruthenium oxide nanoparticles enhanced the conductivity, surface area, and stability of the composite, while reducing distortion in the polymeric chains and improving the active mechanism sites on the surface. The composite exhibited favorable electrochemical and thermal properties, making it suitable for electrode materials in electrochemical applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Applied
Valterney L. Deus, Lais M. Resende, Eliete S. Bispo, Adriana S. Franca, Maria Beatriz A. Gloria
Summary: Cloning techniques have been used to improve the agronomic traits of nine fine cocoa varieties, resulting in variations in the concentrations of bioactive amines, phenolic compounds, and antioxidant potential of dark monoclonal chocolates. The chemometric models based on FTIR data provided satisfactory predictions for the concentrations of amines, phenolic compounds, and antioxidant activity, confirming the significant contribution of amines to the antioxidant potential of chocolates. The analytical method (DPPH vs. Rancimat) also affected the results of antioxidant activity in the chocolates.
Article
Multidisciplinary Sciences
Leandro Rodrigues Koenig, Aline Domingues Batista, Wesley Renzi, Henrique de Santana
Summary: This study aims to verify the optical properties of polymer systems on platinum for use in organic photovoltaic devices. The synthesis temperature and deposition method were found to significantly affect the stability of radical cation segments. Layered deposition favored the stabilization of these segments. Photoluminescence decay time confirmed that the relative amount of radical cation and dication segments in the polymer matrix affects their lifetime in different materials.
Article
Electrochemistry
Mingxiang Meng, Min Lin
Summary: This study developed an electroanalytical sensor using a polypyrrole-gold composite for detecting tyramine in fermented foods. The sensor demonstrated high sensitivity and selectivity, as well as stability and reproducibility under ambient conditions. The practical application of the sensor showed its potential for routine use.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Biophysics
Wenxi Lu, Xixiang Xie, Xianli Lan, Pan Wu, Hongmei Peng, Jian He, Liping Zhong, Xiyu Liu, Zhiming Deng, Zhenkai Tan, Aiqun Wu, Liang Shi, Yong Huang
Summary: An ultrasensitive electrochemical immunosensor was developed for the detection of Glypican-3 (GPC3), a liver cancer marker. This sensor utilized the signal amplification of electro-active ferrocene-tyramine (Fc-Tyr) molecule deposition, catalyzed by horseradish peroxidase (HRP). The sensor demonstrated high selectivity and sensitivity to GPC3, and was validated through simultaneous testing with ELISA in clinical liver cancer patients.
BIOSENSORS & BIOELECTRONICS
(2023)
Review
Chemistry, Applied
Beatriz del Rio, Maria Fernandez, Begona Redruello, Victor Ladero, Miguel A. Alvarez
Summary: Biogenic amines (BA) are molecules with biological functions that can accumulate at toxic concentrations in foods. Some microorganisms have been identified as responsible for their accumulation. Histamine, tyramine, and putrescine are the most commonly found BA at highest concentrations. Ingesting food with high BA concentrations can lead to intoxication. Additionally, there is synergy between different BA, emphasizing the need for regulation to protect consumer health.
Article
Materials Science, Multidisciplinary
Nikolay A. Ogurtsov, Andrii Mamykin, Oleksandr L. Kukla, Alexey S. Pavluchenko, Mykola Borysenko, Yuri P. Piryatinski, Jean-Luc Wojkiewicz, Alexander A. Pud
Summary: This paper explores the structural, electronic, and sensing properties of different P3MT core-shell nanocomposites and compares their interactions with MWCNTs and PVDF components. The results show specific changes in the properties of P3MT in these nanocomposites, which can be used for detecting and recognizing simulants of chemical warfare agents.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Review
Food Science & Technology
Maria Schirone, Luigi Esposito, Federica D'Onofrio, Pierina Visciano, Maria Martuscelli, Dino Mastrocola, Antonello Paparella
Summary: This review analyzes the presence and role of biogenic amines in meat and meat products, as well as the effect of technological conditions. The provided data can be useful in developing solutions for controlling biogenic amines formation and protecting perishable products.
Article
Food Science & Technology
Carla Paulo Vieira, Marion Pereira da Costa, Vitor Luiz de Melo Silva, Karina Frensel Delgado, Beatriz da Silva Frasao, Thaisa Abrantes Elias, Yves Eduardo Chifarelli de Oliveira Nunes, Maria Beatriz de Abreu Gloria, Carlos Adam Conte-Junior
Summary: The study found that Streptococcus thermophilus and Lactobacillus acidophilus LA-5 increased tyramine and total BAs content in fermented milks, with Maillard reaction and post acidification enhancing BAs accumulation in cow's fermented milk, and loss of consistency coefficient and viscosity playing an important role in BAs accumulation in goat's fermented milk. These findings suggest that controlling Maillard reaction and post acidification in cow's fermented milk, as well as viscosity in goat's fermented milk, can help mitigate BAs formation during storage.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
