Article
Chemistry, Analytical
Florencia Alejandra Gulotta, Mariana Angelica Montenegro, Ladislao Vergara Diaz, Joaquin Arata Badano, Nancy Fabiana Ferreyra, Veronica Irene Paz Zanini
Summary: In this study, water-soluble chitosan polycation obtained by Maillard reaction with glucose (G-Chit) or lactose residues was used for the immobilization of glucose oxidase (GOx) and lactate oxidase onto carbon paste electrodes using the layer-by-layer adsorption method. The G-Chit and GOx multilayer structure showed the best performance, with a sensitivity of (12.4 +/- 0.3) mu A mM-1 cm-2 in a glucose concentration range from 180 μM to 1.75 mM. The biosensor exhibited fast responses for quantification of glucose even in milk samples, confirming the suitability of these chitosan derivatives for enzyme adsorption and supramolecular structure construction.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Juan M. Devida, Facundo Herrera, M. Antonieta Daza Millone, Feilix G. Requejo, Diego Pallarola
Summary: Graphene oxide is widely used in electrical sensors for monitoring various processes. However, the presence of defects on the surface of the graphene affects its electrical properties. Therefore, it is important to adjust the surface chemistry of graphene oxide for the immobilization of biomolecules while preserving its electrochemical integrity.
Article
Chemistry, Applied
Derong Lin, Yang Li, Yichen Huang, Wen Qin, Douglas A. Loy, Hong Chen, Qing Zhang, Zhijun Wu
Summary: In this study, citric acid modified cellulose nanocrystals (MCNC) and silica aerogel (SA) were used as reinforcing agents and added to polyvinyl alcohol (PVA) to prepare composite films. The results showed that the modified reinforcing agents were uniformly dispersed in the PVA matrix and formed a compact structure, improving the thermal stability and barrier properties of the films.
CARBOHYDRATE POLYMERS
(2022)
Article
Nanoscience & Nanotechnology
Artur Huseinov, Chaminda P. Nawarathne, Noe T. Alvarez
Summary: This paper introduces the first application of a covalently attached carbon nanotube film to a nanostructured gold electrode for electrochemical detection of hydrogen peroxide. The introduction of properly aligned carbon nanotubes significantly enhances the electroactive surface area and current response, leading to a stable signal under oxidative conditions. In addition, the functional groups on the carbon nanotube surface offer possibilities for simple functionalization.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Netrapal Singh, Hafsa Siddiqui, Manoj Goswami, Satendra Kumar, Mohammad Ashiq, Natarajan Sathish, Mysore Sridhar Santosh, Surender Kumar
Summary: Nanoscale-thick silver thin films (Ag-NTF) are fabricated on indium tin oxide-coated glasses through an electrochemical 3D printing process. The Ag-NTF electrode exhibits uniform and nanometer-thick film structure, with a mean crystallite size of 17 nm. The electrode shows excellent electrochemical activity, with a sensitivity of 25 +/- 1 mu A mM-1 cm-2 and a lower detection limit of 1.0 mu M for hydrogen peroxide sensing. The electrode also demonstrated good selectivity towards H2O2 and applicability in real-life samples.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Minying Wu, Qian Zhang, Yuanyuan Fang, Chao Deng, Fangzhou Zhou, Yi Zhang, Xingdong Wang, Yi Tang, Yajun Wang
Summary: Two-dimensional nanoreactors with cascade catalytic activity for glucose oxidation and hydrogen peroxide decomposition were prepared by immobilizing GOx on Ti3C2 MXene nanosheets. The GOx-conjugated Ti3C2-PLL nanosheets exhibited excellent enzymatic activities and were further deposited on glassy carbon electrode to construct a high-performance biosensor with a low glucose detection limit.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Jiameng Li, Jiayin Liu, Ziyue Wu, Xue Shang, Ya Li, Wenxing Huo, Xian Huang
Summary: In this study, a fully printed bioresorbable electrochemical device was developed for real-time glucose monitoring. The device utilizes bioresorbable materials and a molybdenum-tungsten reference electrode to achieve stable electrode potential and accurate detection. In vitro and in vivo experiments demonstrated the device's performance and biocompatibility, indicating its potential for mass manufacturing high-performance bioresorbable electrochemical devices.
Article
Electrochemistry
Thiago Martimiano do Prado, Lucas Gomes da Silva Catunda, Marcelo Luiz Calegaro, Daniel Souza Correa, Sergio Antonio Spinola Machado
Summary: The application of 2D-carbonylated graphitic carbon nitride in modified screen-printed electrodes for photoelectrochemical analysis shows promise in designing sensors for detecting analytes of biological and medical interest.
ELECTROCHIMICA ACTA
(2022)
Article
Biochemistry & Molecular Biology
Fernaldy Leonarta, Cheng-Kang Lee
Summary: The nanofibrous membrane, with self-sustainable H2O2 production, has sustained antimicrobial capability and potential applications in biomedicine, food and health industries, and challenges related to wound healing in diabetic patients.
Article
Biophysics
Nicole L. Walker, Jeffrey E. Dick
Summary: The development of a new electrochemical technique - open circuit potential, has been aimed at stable and reliable monitoring of biological metabolites. By immobilizing oxidase enzyme in chitosan hydrogel, the method achieves specificity in monitoring metabolites. This approach can effectively detect metabolites such as glucose and can be extended to detect other analytes.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Analytical
Miguel Aller Pellitero, Nandini Kundu, Jonathan Sczepanski, Netzahualcoyotl Arroyo-Curras
Summary: DNA-based electrochemical sensors use Os(ii/iii) complex as a redox reporter, which shows pH-insensitive electron transfer and better operational stability compared to methylene blue, making it a promising candidate for continuous molecular monitoring applications.
Article
Chemistry, Physical
Xiang-Le Liu, Min Li, Wen-Hao Geng, Weiwei Cao, Yun-Hua Tian, Tong-Yu Li, Peng-Shuai Bin, Peng-Fei Qian, Hong-Zhang Geng
Summary: In this study, composite electrothermal films with excellent performances were prepared using a layer-by-layer deposition approach. These films exhibit rapid temperature response, uniform heating temperature distribution, and good thermal stability after prolonged heating. By adjusting the content of multi-walled carbon nanotubes (MWCNTs) and the applied voltage, the electrothermal properties of the films can be accurately controlled. These composite electrothermal films have broad prospects for thermal management in wearable applications and electronic devices.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Analytical
Li Zhang, Chao Li, Fengbo Li, Shaobin Li, Huiyuan Ma, Feng Gu
Summary: A promising sensing platform based on polyoxometalate-based metal-organic framework (POMOF) was established for sensitive electrochemical detection of xanthine (XA). The POMOF-based sensor demonstrated a wide linear range (0.5 mu M-240 mu M), low detection limit (0.26 mu M), and excellent selectivity for detecting XA. Furthermore, the composite further demonstrated excellent reproducibility and great stability. The proposed sensor may provide a new way for early disease diagnosis.
Article
Chemistry, Analytical
Yanan Wang, Yali Liu, Xiao Wang, Xiyue Cao, Jianfei Xia, Zonghua Wang
Summary: This study introduces a wearable and flexible three-electrode electrochemical sensing system (TESS) with a two-in-one enzyme-mimic working electrode (TIOWE). The integrated three-electrode system, including working, reference, and counter electrodes, is created by transfer printing of Ni2P-based composite electrode ink (Ni2P/G ink), Ag/AgCl ink, and carbon ink onto a PDMS substrate. The TIOWE-TESS demonstrates low detection limits, wide linear ranges, applicability in serum samples, and excellent electrochemical performance at fluctuant working temperatures, making it suitable for commercial health-monitoring devices.
ANALYTICA CHIMICA ACTA
(2023)
Article
Energy & Fuels
Hiroyuki Kai, Akichika Kumatani
Summary: Porous microneedle electrodes with pores of approximately 1 μm diameter were fabricated and exhibited a specific surface area of 2.559 m(2) g(-1), higher than that of the non-porous control. Experimental results showed that porous structures in electrodes have advantages in electrochemical sensing with increased sensitivity.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Guochen Zhao, Jie Chen, Yuanfeng Huang, Rayna Bryaskova
COMPTES RENDUS CHIMIE
(2015)
Article
Nanoscience & Nanotechnology
Daniela Vasileva Pencheva, Elena Ilieva Velichkova, Denis Zdravkov Sandarov, Adrian Draganov Cardoso, Maria Hristova Mileva, Petia Dinkova Genova-Kalou, Rayna Bryaskova
JOURNAL OF NANOMATERIALS
(2015)
Article
Materials Science, Biomaterials
Rayna Bryaskova, Nikolai I. Georgiev, Stefan M. Dimov, Rumiana Tzoneva, Christophe Detrembleur, Abdullah M. Asiri, Khalid A. Alamry, Vladimir B. Bojinov
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2015)
Article
Chemistry, Physical
Rayna Bryaskova, Nelly Georgieva, Daniela Pencheva, Zlatina Todorova, Nevena Lazarova, Todor Kantardjiev
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2014)
Article
Polymer Science
Mariya Kyulavska, Rayna Bryaskova, Dimitriya Bozukova, Rosa Mateva
JOURNAL OF POLYMER RESEARCH
(2014)
Article
Electrochemistry
Umesh Lad, Girish M. Kale, Rayna Bryaskova
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2014)
Article
Materials Science, Coatings & Films
Rayna Bryaskova, Nelly Georgieva, Tonya Andreeva, Rumiana Tzoneva
SURFACE & COATINGS TECHNOLOGY
(2013)
Article
Polymer Science
Selen R. Ismail, Rayna G. Bryaskova, Nikolai Georgiev, Nikoleta D. Philipova, Ventsislav V. Bakov, Veselina P. Uzunova, Rumiana D. Tzoneva, Vladimir B. Bojinov
POLYMERS FOR ADVANCED TECHNOLOGIES
(2020)
Article
Polymer Science
Rayna Bryaskova, Nikoleta Philipova, Nikolay Georgiev, Ivo Lalov, Vladimir Bojinov, Christophe Detrembleur
Summary: This study reports the facile preparation of photoactive antibacterial mussel inspired polymer coatings on a stainless steel substrate from water based precursors. The coatings, deposited through sequential deposition of different aqueous solutions, demonstrated good mechanical properties and antibacterial activity.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Rayna Bryaskova, Nikoleta Philipova, Nikolai Georgiev, Damyan Ganchev, Ivo Lalov, Christoph Detrembleur
Summary: Novel bio-inspired photoactive antibacterial polymer coatings were prepared on stainless steel, exhibiting good mechanical and antibacterial properties. The coatings consisted of three components deposited on the stainless steel substrate: a catechol-based cationic glue as a universal primer, a silver-loaded nanogel decorated with o-quinones to enhance antibacterial properties and permit photosensitizer grafting, and an ethylene diamine derivative of protoporphyrin IX. The antibacterial activity of the coatings was confirmed against both Gram-positive and Gram-negative strains, making them promising for medical and biomedical applications.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Chemistry, Physical
R. Bryaskova, S. Vircheva, S. Miloshev, N. Dishovsky, R. Tzoneva
COLLOID AND POLYMER SCIENCE
(2017)
Article
Materials Science, Multidisciplinary
Petar Velev, Rayna Bryaskova
FRATTURA ED INTEGRITA STRUTTURALE
(2016)
Article
Multidisciplinary Sciences
Daniela Pencheva, Petia Genova-Kalou, Rayna Bryaskova
COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES
(2016)
Article
Veterinary Sciences
M. H. Mileva, D. Pencheva, R. G. Bryaskova, P. D. Genova-Kalou, T. Kantardjiev
OPEN VETERINARY JOURNAL
(2015)
