Article
Electrochemistry
Mahsa Majidian, Goksu Ozcelikay, Ahmet Cetinkaya, Mehmet Altay Unal, Hasan Nazir, Esen Bellur Atici, Sibel A. Ozkan
Summary: An electrochemical method was developed and validated for the determination and quantification of Olaparib by using GCE-modified MWCNT and Fe2O3 nanoparticles. The linear concentrations of Olaparib were measured from 0.4 to 40 μM with a LOD of 6.4 nM and a LOQ of 21 nM. The nanomaterial-modified electrode successfully analyzed Olaparib in pharmaceutical dosage form and serum samples. In addition, the oxidation mechanism and properties of Olaparib were discussed using DFT.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Hao Feng, Junhua Li, Yuqing Liu, Zhifeng Xu, Ying Cui, Mengqin Liu, Xing Liu, Lingzhi He, Jianbo Jiang, Dong Qian
Summary: Cubic MnSe2 nanoparticles were synthesized for the first time using a simple hydrothermal procedure. The synthesized MnSe2/MWCNTs composite exhibited enhanced electrochemical sensing signals for chloramphenicol detection. The composite showed a wide assay range and low limit of detection, making it a promising sensing platform.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Biophysics
Shuai Cao, Le Zhou, Chang Liu, Huacheng Zhang, Yuxin Zhao, Yanli Zhao
Summary: The ingenious design and synthesis of novel macrocycles brought renewed vigor to supramolecular chemistry in the past decade. Pillarene and pillararene-based functional materials have seen rapid growth in electrochemical studies due to their unique structures and physiochemical properties. Challenges and future developments in this field have been discussed, providing a solid foundation for further bioelectrochemical applications of pillararene systems.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Biochemistry & Molecular Biology
Wenming Li, Jingyun Xiao, Liangyuan Yao, Yanping Wei, Jinsong Zuo, Weili Zeng, Jianhua Ding, Quanguo He
Summary: In this study, a ZrMo2O8-MWCNTs composite was synthesized and used for the electrochemical detection of ADV. The sensor showed a great improvement in the electrochemical response to ADV compared to single-material modified electrodes. It was successfully tested in serum and urine, and demonstrated advantages of simple preparation, fast response, and good reproducibility.
Article
Chemistry, Analytical
Chao Chen, Chenxi Wang, Pengcheng Zhao, Jin Zhang, Yongjun Hu, Junjie Fei
Summary: A novel sensor has been developed based on a composite-modified electrode, which is facile, quick, and temperature-controlled, for the reversible detection of acetaminophen (AP). The sensor shows improved temperature sensitivity, with the electron transfer rate accelerated when AP molecules pass through the modified interface, turning on the sensor. The detection of AP has a wide range and low limit, and the sensor demonstrates high stability, good reproducibility, and excellent anti-interference ability. This on-off sensor opens up possibilities for the use of temperature-sensitive polymers in electro-catalysis, sensors, and environmental pollutant monitoring.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Analytical
Nada S. Ayish, Hoda M. Marzouk, Badr A. El-Zeany, Ahmed S. Fayed
Summary: A novel nanoparticles modified glassy carbon potentiometric sensor was developed for the selective quantitation of Edoxaban in human plasma. The proposed sensor showed improved electrode performance with lower detection limit, faster response time, and enhanced selectivity. It could successfully determine Edoxaban in pure form, pharmaceutical formulation, and human plasma.
Article
Chemistry, Multidisciplinary
Han Tao, Feng Liu, Chun Ji, Yuangen Wu, Xiao Wang, Qili Shi
Summary: A new electrochemical sensing platform using kidney bean esterase as a detection enzyme was proposed for highly sensitive determination of organophosphorus pesticides. The biosensor exhibited an amplified electrocatalytic response to the oxidation of alpha-naphthalenol due to the synergistic electrocatalytic effects of carboxylated graphene/carbon nanotube composites and Au nanoparticles. The biosensor achieved high sensitivity and low-cost detection of trichlorfon and was validated by analyzing actual agricultural products with satisfactory recoveries.
Article
Chemistry, Multidisciplinary
Tucker Stuart, William J. Jeang, Richard A. Slivicki, Bobbie J. Brown, Alex Burton, Victoria E. Brings, Lilian C. Alarcon-Segovia, Prophecy Agyare, Savanna Ruiz, Amanda Tyree, Lindsay Pruitt, Surabhi Madhvapathy, Martin Niemiec, James Zhuang, Siddharth Krishnan, Bryan A. Copits, John A. Rogers, Robert W. Gereau, Vijay K. Samineni, Amay J. Bandodkar, Philipp Gutruf
Summary: Neurotransmitters and neuromodulators play a crucial role in neuronal communication, but studying their release dynamics has been challenging due to technical limitations. Researchers have developed an implantable, wireless, and battery-free platform that allows real-time optogenetic stimulation and electrochemical recording of catecholamine dynamics. The platform has a small size and high sensitivity, making it suitable for studying these dynamics in small animal models. In vitro and in vivo experiments have demonstrated the platform's capabilities and its potential applications in studying dopamine concentration changes and opioid effects in freely behaving subjects.
Article
Chemistry, Multidisciplinary
Yanju Wu, Didi Liu, Jiahua Guo, Fei Wang
Summary: In this study, a nanostructured molybdenum disulfide loaded on reduced graphene oxide (MoS2-rGO) nanocomposite was prepared and used as an electrochemical sensing platform for detecting cyproterone acetate. Due to the synergistic effect of MoS2 and rGO, the nanocomposite film showed a wider linear range and higher sensitivity compared to the pristine MoS2 and rGO film. This study provides a promising electrochemical sensing platform for rapid and sensitive analysis of cyproterone acetate.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Xiaofeng Pan, Qinhua Wang, Daniele Benetti, Yonghao Ni, Federico Rosei
Summary: This work presents the design and fabrication of a mechanical-electric conversion and self-powered sensing platform based on polyelectrolyte hydrogels. The compression deformation of the hydrogel leads to a localized increase in H+ concentration, which induces a directional H+ diffusion. The difference in mobility between ionized H+ and fixed PAA chain allows for the conversion of mechanical energy into electricity.
Article
Chemistry, Analytical
Jinyu Lin, Junchao Qian, Yaping Wang, Yue Yang, Yuxuan Zhang, Jianping Chen, Xingwang Chen, Zhigang Chen
Summary: The article introduces a novel and highly sensitive CeO2-Co3O4 QDs@porous carbon nanocomposite electrochemical sensor for detecting oxytetracycline in water samples. The experimental results show that the electrode exhibits excellent electrocatalytic performance and can effectively detect oxytetracycline.
MICROCHEMICAL JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
T. L. Soundarya, Udayabhanu, Y. T. Ravikiran, B. Nirmala, G. Nagaraju
Summary: In this study, LiZnVO4 nanoparticles (NPs) were synthesized using Hibiscus Rosa Sinensis leaves as a fuel source, and their characteristics and performances were investigated. The results demonstrate the diverse potential applications of LiZnVO4 NPs in optics, antioxidant activity, supercapacitors, and humidity sensing.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Analytical
Yang Yuan, Hui Jia, Jie Wang
Summary: A microfluidic chip-based electrochemical sensing detection platform is proposed for cadmium ion detection. The performance of the platform is optimized by adjusting the microchannel size and electrode modifications. The study finds that the size of the microchannel affects the fluid and the matching of electrode size is crucial for accurate measurements. After optimization, the detection platform achieves high sensitivity and detection limits.
ANALYTICAL METHODS
(2022)
Article
Materials Science, Ceramics
Yunhang Liu, Qian Wang, Gan Zhu, Qiwen Ran, Fang Li, Meimei Guo, Guifang Wang, Hongyuan Zhao
Summary: We developed a one-pot ultrasonic-assisted method for the preparation of a nanocomposite consisting of palygorskite nanorods/Super P Li carbon nanoparticles-graphitized carbon nanotubes (PNRs/SPCNPs-g-CNTs). This nanocomposite was used to modify the glassy carbon electrode (GCE) to fabricate a PNRs/SPCNPs-g-CNTs/GCE sensor. The sensor exhibited high sensitivity and selectivity for the detection of niclosamide in tap water and lake water samples, with a detection limit of 3.6 nM.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Behnaz Hatamluyi, Samira Sadeghzadeh, Reihaneh Sadeghian, Mohammad Mobin Mirimoghaddam, Mohammad Taher Boroushaki
Summary: In this study, a novel electrochemical analysis tool was developed for accurate detection of gemcitabine (GEM) by combining molecular imprinted polymer (MIP) technology and ratiometric quantification strategy. The modified electrode surface and MIP network enabled the detection of GEM in different concentration ranges.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Maximiliano L. Agazzi, Santiago E. Herrera, M. Lorena Cortez, Waldemar A. Marmisolle, Mario Tagliazucchi, Omar Azzaroni
CHEMISTRY-A EUROPEAN JOURNAL
(2020)
Article
Biophysics
Maximiliano L. Agazzi, Santiago E. Herrera, M. Lorena Cortez, Waldemar A. Marmisoll, Omar Azzaroni
COLLOIDS AND SURFACES B-BIOINTERFACES
(2020)
Review
Chemistry, Analytical
Gregorio Laucirica, Yamili Toum Terrones, Vanina Cayon, Maria Lorena Cortez, Maria Eugenia Toimil-Molares, Christina Trautmann, Waldemar Marmisolle, Omar Azzaroni
Summary: This article describes recent advances in solid-state nanochannel-based (bio)chemical sensors, including sensing principles, nanofabrication techniques and strategies for detecting specific targets. These solid-state nanochannels exhibit customized sensing functions due to their unique ion transport properties and integration of molecular recognition elements, showing great potential for various applications.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Gregorio Laucirica, Yamili Toum Terrones, Michael F. P. Wagner, Vanina M. Cayon, Maria Lorena Cortez, Maria Eugenia Toimil-Molares, Christina Trautmann, Waldemar Marmisolle, Omar Azzaroni
Summary: Nanofluidic channels, called nanofluidic field effect transistors (nFETs), can modulate ionic transport by using an external voltage. In this study, the actuation range of nFETs was extended by using the supporting electrolyte as a chemical effector. By changing the electrolyte nature, different ion transport regimes were set, and the rectification efficiency was controlled by the gate voltage.
Review
Chemistry, Physical
Santiago E. Herrera, Maximiliano L. Agazzi, Eugenia Apuzzo, M. Lorena Cortez, Waldemar A. Marmisolle, Mario Tagliazucchi, Omar Azzaroni
Summary: The complexation of polyelectrolytes with other oppositely charged structures has led to the development of various functional materials with potential applications in many technological fields. Recent research has focused on the complexation of polyelectrolytes with alternative building blocks such as small charged molecules, and the similarities between these complexes and well-known polycation-polyanion complexes. This review discusses the physicochemical characteristics of these complexes and their potential as versatile functional platforms in fields such as biomedicine and advanced materials engineering.
Article
Chemistry, Multidisciplinary
Yamili Toum Terrones, Gregorio Laucirica, Vanina M. Cayon, Gonzalo E. Fenoy, M. Lorena Cortez, Maria Eugenia Toimil-Molares, Christina Trautmann, Waldemar A. Mamisolle, Omar Azzaroni
Summary: Acetylcholinesterase-modified nanochannels are reliable and reproducible nanofluidic sensors for highly sensitive detection of acetylcholine. The surface charge of the nanochannel is adjusted/reconfigured by weak polyelectrolytes as chemical amplifiers in the presence of local pH changes induced by the enzymatic reaction, allowing the transduction of acetylcholine into measurable ionic signals with a low limit of detection.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Vanina M. Cayon, Gregorio Laucirica, Yamili Toum Terrones, M. Lorena Cortez, Gonzalo Perez-Mitta, Jun Shen, Christian Hess, Maria Eugenia Toimil-Molares, Christina Trautmann, Waldemar A. Marmisolle, Omar Azzaroni
Summary: This study presents a novel nanofluidic device based on solid-state nanochannels, fabricated through a combination of silane chemistry and ALD technologies. The device exhibits highly selective and reversible response towards borate/fructose exposure, switching between ON and OFF states based on surface charge variation resulting from borate binding. This work provides a promising framework for the development of new nanochannel-based platforms suitable for multiple applications.
Article
Chemistry, Physical
Lucy L. Coria-Oriundo, M. Lorena Cortez, Omar Azzaroni, Fernando Battaglini
Summary: This study introduced an alternative method using branched polyethyleneimine (BPEI) modified with an osmium complex as a redox mediator, which can form colloidal particles when combined with glucose oxidase (GOx) to create electroactive assemblies. The addition of NaCl induced improved film formation, leading to enhanced catalytic current in the system.
Article
Chemistry, Multidisciplinary
Gregorio Laucirica, Yamili Toum Terrones, Vanina M. Cayon, M. Lorena Cortez, Maria Eugenia Toimil-Molares, Christina Trautmann, Waldemar A. Marmisolle, Omar Azzaroni
Article
Chemistry, Multidisciplinary
Gregorio Laucirica, Vanina M. Cayon, Yamili Toum Terrones, M. Lorena Cortez, Maria Eugenia Toimil-Molares, Christina Trautmann, Waldemar A. Marmisolle, Omar Azzaroni
Article
Chemistry, Physical
Juan M. Giussi, Marta Martinez Moro, Agustin Iborra, M. Lorena Cortez, Desire Di Silvio, Irantzu Llarena Conde, Gabriel S. Longo, Omar Azzaroni, Sergio Moya
Article
Chemistry, Multidisciplinary
Santiago E. Herrera, Maximiliano L. Agazzi, M. Lorena Cortez, Waldemar A. Marmisolle, Mario Tagliazucchi, Omar Azzaroni
CHEMICAL COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Maximiliano L. Agazzi, Santiago E. Herrera, M. Lorena Cortez, Waldemar A. Marmisolle, Catalina von Bilderling, Lia I. Pietrasanta, Omar Azzaroni
Review
Chemistry, Multidisciplinary
Juan M. Giussi, M. Lorena Cortez, Waldemar A. Marmisolle, Omar Azzaroni
CHEMICAL SOCIETY REVIEWS
(2019)
Article
Chemistry, Physical
Santiago E. Herrera, Maximiliano L. Agazzi, M. Lorena Cortez, Waldemar A. Marmisolle, Mario Tagliazucchi, Omar Azzaroni
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)