Article
Chemistry, Applied
Jinxia Feng, Peihong Deng, Jinyun Xiao, Junhua Li, Yaling Tian, Yiyong Wu, Jun Liu, Guangli Li, Quanguo He
Summary: This study prepared an acetylene black paste electrode (ABPE) modified with oxygen-functionalized multi-walled carbon nanotubes (MWCNT-COOH) for investigating the electrochemical behavior of tyrosine. The modified electrode showed a well-defined anodic peak for tyrosine oxidation, and the oxidation peak current varied linearly with tyrosine concentration. The MWCNT-COOH/ABPE was successfully applied for the determination of tyrosine in food samples.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Yijing Ai, Juan Liu, Lijun Yan, Guangjiu Li, Xianghui Wang, Wei Sun
Summary: This study developed a novel electrochemical sensor for the detection of baicalein using a multi-walled carbon nanotube and banana peel derived biomass carbon modified glassy carbon electrode. The sensor showed a wide detection range and low detection limit for baicalein, with detailed investigation of its electrochemical behaviors. The method was successfully applied for drug analysis, extending the application of electrochemical methods in this field.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Azar Dehnavi, Ahmad Soleymanpour
Summary: This study developed a highly effective electrochemical sensor for propranolol using a TiO2/MWCNT film deposited on the pencil graphite electrode as modifier, showing excellent electrochemical properties and selective response. The electrochemical features of the modified electrode were investigated using cyclic voltammetry and electrochemical impedance spectroscopy techniques, while propranolol was determined using the differential pulse technique.
Article
Chemistry, Analytical
Aysu Arman, Sener Saglam, Aysem Uzer, Resat Apak
Summary: The study presented a sensitive detection method for nitroaromatic explosives using a GC/MWCNTs/PEI electrode coated with gold nanoparticles. The method successfully detected TNT, DNT, 2,4-DNP, PA, and tetryl in a linear range, with detection limits ranging from 15 μg L-1 to 135 μg L-1. This method was also validated against the reference LC-MS method for analyzing explosives in soil samples.
Article
Chemistry, Physical
Anna Gorska, Marcel Zambrzycki, Beata Paczosa-Bator, Robert Piech
Summary: A new electrochemical sensor based on hierarchical carbon nanofibers with Ni and Co nanoparticles (eCNF/CNT/NiCo-GCE) was developed. The sensor exhibits high sensitivity, good electrical conductivity, and electrocatalytic properties. The optimized method was proven to be accurate and reliable for the determination of cetirizine hydrochloride (CTZ).
Article
Chemistry, Inorganic & Nuclear
Arefeh Mohammadnavaz, Hadi Beitollahi, Sina Modiri
Summary: We developed a new electrochemical sensing platform for detecting L-Cysteine using a modified carbon paste electrode with multi-walled carbon nanotubes-Co3O4 nanocomoisite/benzoyl ferrocene/ionic liquid. The nanocomposite was fabricated through a facile hydrothermal protocol and characterized using various techniques. The modified electrode exhibited excellent catalytic activity towards L-Cys oxidation, as demonstrated by cyclic voltammetry. The sensor had a narrow detection limit, broad linear dynamic range, and good sensitivity.
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Sayed S. Badawy, Yomna M. Ahmed, M. A. Sultan
Summary: A sensitive and cost-effective voltammetric method was proposed for the determination of daclatasvir dihydrochloride (DAC.2HCl) using a bimetallic Ag/Co nanoparticles-modified carbon paste electrode. The electro-deposition of nanoparticles was achieved using potential cyclization. Surface characterization of the sensor was performed using scanning electron microscopy (SEM). The sensor exhibited a wide concentration range and low detection limit, and was successfully applied for the determination of DAC in pharmaceutical and urine samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Qusai Hassan, Chevon Riley, Meissam Noroozifar, Kagan Kerman
Summary: In this study, a novel hybrid nanomaterial-based electrochemical sensor was developed for the simultaneous detection of four DNA bases. Graphene oxide quantum dots (GOQDs) were synthesized and used to prepare a hybrid nanomaterial with multi-walled carbon nanotubes (GOQD-MWCNT). The modified sensor showed linear calibration plots up to a concentration of 50, 50, 500, and 500 μM for guanine, adenine, thymine, and cytosine, respectively. The sensor was also successfully applied for the determination of DNA bases in artificial saliva samples, with recovery values ranging from 95.9% to 106.8%.
Article
Chemistry, Analytical
Zeynab Khorablou, Faezeh Shahdost-Fard, Habib Razmi
Summary: A simple electrochemical sensor based on conductive carbon cloth modified with carbon selenide nanofilms has been developed for the sensitive and rapid detection of pethidine (PTD). The sensor showed high sensitivity and fast response, enabling accurate measurement of PTD concentrations in biofluids.
Article
Chemistry, Multidisciplinary
Mohsin Amin, Badr M. M. Abdullah, Stephen R. R. Wylie, Samuel J. J. Rowley-Neale, Craig E. E. Banks, Kathryn A. A. Whitehead
Summary: This study developed a MWCNT-based enzymatic biosensor for the voltammetric detection of cadaverine. The biosensor exhibited high sensitivity and linear concentration dependence, and it was also effective when tested in artificial saliva.
Article
Electrochemistry
Eman A. Al-Harbi
Summary: A highly sensitive SW-ASV methodology combined with a BiF/GCE electrode was successfully employed to detect CTZ drug at trace levels in aqueous media at pH 8.0, with a linear range of 5.0 x10(-9) - 1.2x10(-6) mol L-1 and high accuracy in detection.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Thenmozhi Rajarathinam, Dinakaran Thirumalai, Minho Kwon, Seulah Lee, Sivaguru Jayaraman, Hyun-jong Paik, Jaewon Lee, Seung-Cheol Chang
Summary: A voltammetric sensor for detecting norepinephrine (NE) was developed by modifying a disposable screenprinted carbon electrode (SPCE) with de-bundled single-walled carbon nanotubes (D-SWCNTs). The sensor showed improved sensitivity towards NE compared to other types of modifications, and was optimized for detection under specific conditions. Interferents were investigated, and the sensor demonstrated practical potential by quantifying NE in ex vivo rat tissue samples.
BIOELECTROCHEMISTRY
(2022)
Article
Environmental Sciences
Miaomiao Tan, Longfei Liu, Deyun Li, Chengliang Li
Summary: The transport behavior of multi-walled carbon nanotubes with different surface modifications in water-saturated sand columns was influenced by pH and ionic strength, with COOH-MWCNTs exhibiting the strongest mobility.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Analytical
Shuang Han, Xuan Zhang, Hongda Sun, Jinping Wei, Hui Wang, Shuangyu Wang, Jing Jin, Zhichao Zhang
Summary: The study presents a method for the direct and quantitative determination of CAP and DOX using a GCE modified with carboxylic-group-functionalized single-walled carbon nanohorns. The modified electrode shows high sensitivity and linear response towards both substances, making it suitable for real sample analysis.
Article
Electrochemistry
Mohammed Monirul Islam, Md Arifuzzaman, Sayeed Rushd, Md Kamrul Islam, Muhammad Muhitur Rahman
Summary: The electrocatalytic determination of paracetamol (PRT) in the presence of cetirizine (CN) using a carbon paste sensor modified with poly aspartic acid (PA) via electrochemical polymerization method was discussed. The modified sensor exhibited great catalytic activity and sensitivity, making it suitable for the simultaneous determination of PRT and CN.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Biophysics
Cristina Potrich, Anna Pedrotti, Cecilia Pederzolli, Lorenzo Lunelli
Summary: This study developed different functional surfaces for capturing exosomes and verified their effectiveness through experiments. Among them, the negatively-charged surface performed the best, capturing a large number of exosomes and successfully analyzing their biomarkers.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Brojendra Nath Saren, Srushti Mahajan, Mayur Aalhate, Rahul Kumar, Essha Chatterjee, Indrani Maji, Ujala Gupta, Santosh Kumar Guru, Pankaj Kumar Singh
Summary: This study developed P-selectin-targeted dasatinib nanoparticles coated with chitosan and fucoidan (DST-CH-FUC-NPs), which showed sustained release, reduced hemolytic potential, increased cytotoxicity and cellular uptake compared to free dasatinib. These nanoparticles also demonstrated enhanced ROS production, mitochondrial membrane potential damage, apoptosis induction, cell migration inhibition, and disruption of lysosomal membrane integrity.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Weiping Deng, Xiaohui Li, Ya Li, Zhongbing Huang, Yulin Wang, Ning Mu, Juan Wang, Tunan Chen, Ximing Pu, Guangfu Yin, Hua Feng
Summary: This study demonstrates the importance of chirality in nerve repair by constructing a GO-phenylalanine derivative hydrogel system. In vivo experiments show that the dextro group significantly improves functional recovery and histological restoration in rat sciatic nerve repair models. The doped GO promotes angiogenesis and myelination. These results suggest that chirality plays a crucial role in promoting nerve regeneration.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Xiaoyan Wang, Jin Gao, Yu Gao, Linlin Zhang, Congchao Xu, Qintong Li, Lin Li, Jianliang Xue
Summary: In this study, a highly effective surfactant producer strain, Bacillus Cereus GX7, was isolated from the oil tank bottom sludge of Shengli Oil Field in China. The biosurfactant produced by GX7 was identified as surfactin, a lipopeptide surfactant, through TLC, FT-IR, and LC-MS/MS analysis. The fermentation process of GX7 was optimized using single-factor experiments, focusing on the composition of fermentation medium and fermentation conditions. Glucose and peptone were found to be the best carbon and nitrogen sources, and the optimum temperature, inoculum amount, pH, rotation speed, and fermentation time for the strain were determined to be 30°C, 1%, 7.5, 150 rpm, and 48 h, respectively. After optimization, the surface tension and emulsification index of the fermentation broth were 26.84 mN/m and 57.84%, respectively. Furthermore, the biosurfactant produced by GX7 demonstrated good stability over a wide range of temperature, pH, and salt concentration.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Rodney Marcelo do Nascimento, Christine Grauby-Heywang, Houssem Kahli, Nesrine Debez, Laure Beven, Ivan Helmuth Bechtold, Touria Cohen Bouhacina
Summary: This article presents a theoretical model based on thermodynamic rules to assess the early stages of bacterial biofilm formation on different material surfaces. By utilizing morphological characteristics of bacteria and Atomic Force Microscopy images, the model generates a dataset of energetically minimized states, which can be correlated with bacterial adhesion states.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Filipa A. L. S. Silva, Licinia Timochenco, Raquel Costa-Almeida, Jose Ramiro Fernandes, Susana G. Santos, Fernao D. Magalhaes, Artur M. Pinto
Summary: The study demonstrates that by photoreducing nanosized graphene oxide using ultraviolet radiation, nanometric particles with high light-to-heat conversion efficiency and water stability can be obtained. These nanomaterials exhibit high absorption in the near-infrared region and show no cytotoxicity towards human cells, indicating their potential for safe therapy.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
D. Costa, V. De Matteis, F. Treso, G. Montani, M. Martino, R. Rinaldi, M. Corrado, M. Cascione
Summary: This review primarily discusses the relationship between contact lens discomfort (CLD) and the surface properties of contact lenses (CLs), specifically the coefficient of friction (CoF). The review emphasizes the importance of introducing a standardized protocol for measuring CoF and calls for a more precise evaluation of the relationship between surface properties and comfort in CLs users.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Debdip Brahma, Tamal Sarkar, Rupal Kaushik, Akshay Narayan Sarangi, Amar Nath Gupta
Summary: This in-vitro study evaluates the effect of reactive oxygen species (ROS) on the structural rearrangement of elastin. The results show that oxidative stress leads to a decrease in protein size and changes in secondary structure, potentially promoting protein aggregation. This study is important for therapeutics aiming to prevent elastin degradation and aging.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Xin Yang, Qiang Wang, Chaoxi Yan, Degang Huang, Yinchang Zhang, Huazheng He, Shouliang Xiong, Congming Li, Pingbo Chen, Tingjun Ye, Dan Hu, Lei Wang
Summary: This study presents a practical and effective strategy to improve osseointegration in patients with osteoporosis. By coating titanium implants with polydopamine followed by strontium modification, the bi-functional implants promote bone regeneration and immune regulation. The results show good biocompatibility, sustained release of strontium ions, and stable osseointegration between bone tissues and implants.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Sengwang Fu, Jianping Zhu, Zhijun Jiang, Yue Cao, Yufei Chen, Lihao Zhang, Sunlong Li, Weipeng Lu, Chengbin Miao, Qing He, Qi Li, Weixing Zhang, Lehao Ren, Yachun Li, Hongchao Shi, Cihui Liu
Summary: Effective management of biofluids is crucial for in vivo surgical interventions. Recent advances include self-sealing needles, drug-eluting stents, and shear-thinning hydrogels. However, complications associated with intestinal mucosal injury and secondary damage still persist. In this study, researchers developed an interpenetrating Janus wettability stent coating that enables unidirectional draining of excessive biofluid. They also demonstrated directional biofluid movement using a self-pumping dressing with potential applications in biofluid collection and disease diagnosis through metal ion detection. This integrated system presents an opportunity for designing wound dressings with effective biofluid management and metal ion detection capabilities.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Maryam Hassani, Mojtaba Kamankesh, Mazda Rad-Malekshahi, Kobra Rostamizadeh, Farhad Rezaee, Ismaeil Haririan, Seyed Mojtaba Daghighi
Summary: Bacterial adhesion and biofilm formation on the surface of biomaterial implants is a critical problem, and a polymer brush coating with antiadhesive and antimicrobial properties has proven to be highly effective in resolving this issue.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Huaihong Zhang, Na Liu, Yuting Zhang, Hui Cang, Zhaosheng Cai, Ziqun Huang, Jun Li
Summary: A functionalized cationic polymer, CR-PQAC, was designed and synthesized for photothermal enhanced antimicrobial therapy. The CR-PQAC nanoparticles exhibited significant antibacterial activity and low cytotoxicity against mammalian cells.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Ipsita Sahu, Priyadarshi Chakraborty
Summary: Peptide nanotechnology bridges the gap between materials and biological worlds by utilizing self-assembly of short-peptide building blocks. Hydrogels engineered from these short peptides show great potential in biomedical applications, but their weak mechanical properties and limited functional diversity need to be addressed. Nanoengineering the networks of these hydrogels by incorporating small molecules, polymers, and inorganic/carbon nanomaterials can enhance their mechanical properties and expand their functional diversity.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Hao Wei, Yajun Gu, Ao Li, Panpan Song, Dingding Liu, Feihu Sun, Xiaofeng Ma, Xiaoyun Qian
Summary: In this study, a stable three-dimensional conductive hydrogel was prepared by cross-linking MXenes to Matrigel hydrogel. The conductive hydrogel promotes the proliferation and differentiation of NSCs, providing new strategies for neural tissue engineering.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Yue Zhong, Xiaoli Ge, Juan Zhang, Qun Wei, Feng Wang, Yongke Zhong
Summary: The effect of oxygenic groups on the hemocompatibility of activated carbon was studied through liquid-phase oxidation and subsequent heat treatment. Results showed that the presence of oxygenic groups improved hemocompatibility, while their removal decreased it.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)