Article
Nanoscience & Nanotechnology
Nils Luedecke, Marek Bekir, Stephan Eickelmann, Matthias Hartlieb, Helmut Schlaad
Summary: Inspired by mussel proteins, a platform for protein-repellent macromolecules based on poly(2-ethyl-2-oxazoline) carrying catechol and cationic functional groups was developed. The polymers with catechol units showed a strong tendency to form surface-bound layers on different substrates, while the ones with additional cationic units were able to form defined and durable polymer films. These coatings prevented the attachment of model proteins, offering a biomimetic approach to nonfouling surface coatings.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Ieva Plikusiene, Vincentas Maciulis, Silvija Juciute, Arunas Ramanavicius, Almira Ramanaviciene
Summary: This study examines the interaction between monoclonal and polyclonal antibodies and the spike protein of SARS-CoV-2 variants. It finds that the B.1.351 variant decreases the dry mass density and increases the wet mass density of the antibody-virus complex. Conversely, the polyclonal antibodies in convalescent human serum lead to a decrease in mass density.
Article
Chemistry, Physical
Jugal Suthar, Alberto Alvarez-Fernandez, Esther Osarfo-Mensah, Stefano Angioletti-Uberti, Gareth R. Williams, Stefan Guldin
Summary: Extracellular vesicles (EVs) are released from various cell types and contain biomolecular content for health and disease identification. However, the heterogeneity of EVs and complexity of biofluids pose challenges to current analytical approaches. This study explores nanostructuring the sensor electrode surface to enhance detection capabilities and achieves significant improvement.
NANOSCALE HORIZONS
(2023)
Article
Engineering, Electrical & Electronic
Tianyi Chen, Pengfei Sha, Yiwei Xu, Xuefei Su, Daqi Chen, Nan Li, Guang Li, Ruifen Hu
Summary: The wireless electrodeless quartz crystal microbalance with dissipation (WE-QCM-D) based sensor was proposed for real-time pH monitoring in low-volume solutions, showing potential for accurate measurements in synthetic urines and online low-volume detections.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Nanoscience & Nanotechnology
Lydia R. St Hill, John W. Craft, Pawilai Chinwangso, Hung-Vu Tran, Maria D. Marquez, T. Randall Lee
Summary: Biofouling has negative impacts on key industries such as medicine, oil, and shipping. Research shows that antifouling coatings prepared from unsymmetrical partially fluorinated spiroalkanedithiols demonstrate better performance in preventing fouling on metal substrates compared to monodentate counterparts.
ACS APPLIED BIO MATERIALS
(2021)
Article
Chemistry, Applied
Chonnipa Palasingh, Rupert Kargl, Karin Stana Kleinschek, Jana Schaubeder, Stefan Spirk, Anna Strom, Tiina Nypelo
Summary: Polysaccharides, including xylans from wood, can be processed into films. The solubility of xylans can be improved through oxidative cleavage of the saccharide ring. The degree of oxidation (DO) of xylans affects their solubility, film formation, and stability. High DO xylans showed the smallest hydrodynamic diameter and formed continuous films with significant moisture uptake.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Analytical
Wei Pan, Xianhe Huang, Qiao Chen
Summary: This study theoretically analyzes the impact of different sizes of dot ring and dot double-ring electrodes on the mass sensitivity distribution of the quartz crystal microbalance (QCM), and proposes a dot triple-ring electrode to enhance uniformity. The research provides a new direction for improving the uniformization of QCM mass sensitivity distribution.
ANALYTICAL CHEMISTRY
(2021)
Article
Optics
Mirit Hen, Leroy Dokhanian, Etai Grunwald, Matan Slook, Moshe Katzman, Maayan Priel, Olga Girshevitz, Avi Zadok
Summary: In this work, the analysis of elastic properties of thin layers deposited on surface acoustic wave-photonic devices is proposed and demonstrated. By measuring the changes in the group velocity of surface acoustic waves after deposition of thin layers, estimates for Young's modulus of these layers can be obtained.
Article
Biophysics
Daniel Pereiraa, Andreas Santamaria, Nisha Pawar, Javier Carrascosa-Tejedor, Mariana Sardo, Luis Mafra, Eduardo Guzman, David J. Owen, Nathan R. Zaccai, Armando Maestro, Ildefonso Marin-Montesinos
Summary: The combination of solid-supported lipid bilayer (SLB) models and surface sensitive techniques provides quantitative information about molecular interactions and lipid distributions. This study designed complex SLBs to mimic cellular plasma membranes, and incorporated phosphatidylinositol 4,5-bisphosphate (PtdIns4,5P2) lipids and synthetic lipo-peptides. Results showed that the adsorption and fusion kinetics of PtdIns4,5P2 were influenced by Mg2+ and higher concentrations of PtdIns4,5P2 led to more homogeneous SLBs. The presence of PtdIns4,5P2 clusters was observed using AFM, while NR provided insights into the structural organization of the SLBs and the role of CD4-derived cargo peptides.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Gergely Stankovits, Agnes Abraham, Eva Kiss, Zoltan Varga, Anil Misra, Andras Szilagyi, Benjamin Gyarmati
Summary: The type and concentration of charged groups in polymers play a crucial role in mucoadhesive interactions. This study investigated the correlation between chemical structure and mucin-polymer interactions by designing cationic poly(amino acid)s with different charge densities. The results showed that the interactions between mucin and polyaspartamides with at least 50% cationic groups displayed a non-linear change, causing increased light scattering. The analysis further revealed that fully cationic polyaspartamide is not necessarily superior, and the maximum adsorbed mass of polymers on mucin occurred at medium cationic group contents. This highlights the importance of cationic polyaspartamides as mucoadhesive excipients due to their multiple functionalities.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Analytical
Bin Zhou, Yan Hao, Zhiyong Wang, Pei Wei, Lianfeng Du, Qiang Xia
Summary: The study developed a real-time QCM cytosensor for evaluating cell viscoelasticity and discovered significant differences in energy dissipation changes between MDA-MB-231 and MCF-7 cells. Curcumin was found to induce cell apoptosis and suppress energy dissipation in MDA-MB-231 cells, showing a good linear relationship between cell viscoelasticity inhibition and apoptosis rate. The QCM sensor accurately monitored these changes, providing a new model for cell apoptosis assessment.
Article
Chemistry, Physical
Qiang-Wei Zhan, Jun Gao, Dongcui Li, Yan Huang
Summary: Flash Nano-Precipitation (FNP) was used to successfully produce lecithin-cholesterol liposomes with high encapsulation efficiency and loading capacity for proteins. The addition of cholesterol effectively improved the liposome bilayer structure, preventing fusion, while rapid mutual adsorption between proteins and defective/curved lecithin bilayers played a crucial role in achieving efficient encapsulation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Review
Cell Biology
Emily M. Kerivan, Lyle Tobin, Mihir Basil, Dana N. Reinemann
Summary: A quartz crystal microbalance (QCM) is commonly used to probe surface interactions and kinetics of synthetic systems, while the addition of dissipation monitoring (QCM-D) allows for the study of viscoelastic systems relevant to molecular and cellular mechanics. The QCM-D is effective in characterizing cytoskeletal systems, which play crucial roles in cell division and motility, by recording real-time frequency and dissipation changes. This review highlights the ability of QCM-D to provide valuable kinetic and mechanical data on the cytoskeleton in both in vitro and cellular assays, either alone or in combination with other biophysical techniques.
Article
Food Science & Technology
Qiang-Wei Zhan, Yan Huang
Summary: Flash nano-precipitation (FNP) efficiently produces phospholipids stabilized nanoparticles with more uniform coverage and different stability depending on the core content. The study reveals that particle size and stability can be precisely predicted using specific models and theories.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Yang Lyu, Jie Yu, Minhui Guo, Kan Wang, Zhenxun Yu, Lingxiao Zhang, Ying Zhang, Leilei Chen
Summary: The study utilized QCM-D to investigate the binding properties of CIP on extracellular proteins from activated sludge, revealing that factors affecting the binding included CIP concentration, pH, and cations. The binding process followed Langmuir model, with two distinct binding periods based on viscoelastic properties of the CIP layer.
Article
Chemistry, Applied
Heena, Komal Sharma, Kamlesh Kumar, Bhargab Das, Raj Kumar
Summary: In this study, holographic films were prepared using an automatic film applicator, and their performance was compared with films prepared by other methods. The results showed that holographic films prepared with the automatic film applicator had higher diffraction efficiency and more uniform thickness, making them suitable for holographic applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Athira S. Vijayan, Antony Joseph, Abey Joseph, T. S. Abhijith, Baiju G. Nair, V. Sajith
Summary: Novel polydopamine functionalized ceria-zirconia nanoparticles filled water-borne epoxy nanocomposite coatings were developed to prevent microbial-induced corrosion of mild steel. The coatings exhibited exceptional anti-biofouling and anti-biocorrosion properties due to the synergistic effect of PDA functionalization and zirconium incorporation, providing significant enhancement in charge transfer resistance and coating resistance.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yudan Yi, Qingyong Sun, Qijun Li, Bi Shi, Ya-nan Wang
Summary: Producing metal-free leather is an effective approach to eliminate Cr pollution and achieve sustainable development of the leather industry. However, current metal-free tanning technologies have limitations in terms of water sorption and charge properties. By using cationic amphiphilic acrylic copolymers (PSD) as retanning agents, the properties of metal-free leather can be significantly improved, including enhanced hydrophobicity, better dye absorption, and excellent filling effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yunqing Xia, Lifen Tong, Xiaofang Feng, Hubing Xiang, Yi He, Xiaobo Liu
Summary: By incorporating functionalized nanofillers, such as polydopamine-modified graphitic carbon nitride and cerium oxide, into epoxy coatings, their corrosion resistance can be improved and their protective period can be extended.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Weineng Lu, Guanhao Ma, Jinqing Qu
Summary: Four novel bis-chalcone-based carbazole derivative photoinitiators were designed and synthesized in this study. Their maximum absorption wavelengths were determined and found to exhibit high molar extinction coefficients. Furthermore, a three-component photoinitiation system including bis-chalcone/iodonium/amine was successfully used to trigger the rapid and efficient photopolymerization of acrylates. The photoinitiators also showed good photo bleaching and biocompatibility, making them suitable for applications such as 3D printing and deep coating curing.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Xingnan Zhou, Shixian Zhang, Yiheng Song, Hongmei Qin, Chuanxi Xiong, Shan Wang, Quanling Yang, Delong Xie, Rong Fan, Dan Chen
Summary: In this study, eco-friendly 3-amino-1,2,4-triazole (ATA) molecules were used to modify graphene oxide (GO) nanosheets for improving the anti-corrosion performance of water-borne epoxy (WEP) coating. The results show that ATA modification enhances the dispersion of GO in the polymer coating and significantly improves the barrier effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Hao Fu, Wei Bing, Xushibojie Liu
Summary: In this study, temperature-sensitive coatings with bacteria-killing and bacteria-releasing functions were prepared on silicone rubber surfaces by UV polymerization and UV photocatalysis. The modified surface exhibited strong and persistent bactericidal effect, inhibiting the formation of bacterial biofilm. Moreover, the smart surface can effectively release bacteria and resist bacterial adhesion through temperature changes. The modified silicone rubber surface showed good biocompatibility without cytotoxicity.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Lee Eyann, Zulkifli Mohamad Ariff, Mohamad Danial Shafiq, Raa Khimi Shuib, Muhamad Sharan Musa
Summary: By investigating the effect of MAA addition on the properties of the WEA core-shell emulsion, film and coating, it was found that MAA can significantly impact the structure and performance of the coatings, and has great potential for applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Jinkyu Choi, Kyung Hoon Min, Byeong Seok Kim, Sung-Hyeon Baeck, Sang Eun Shim, Yingjie Qian
Summary: A novel phosphorus-based flame retardant was designed by incorporating aryl groups, which effectively improved the flame retardancy and mechanical properties of polyurethanes.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Saowaluk Taechutrakul, Thananchai Piroonpan, Beata Paulina Rurarz, Slawomir Kadlubowski, Piotr Ulanski, Wanvimol Pasanphan
Summary: This study proposes the use of nanogels to disperse and stabilize water-insoluble organic pigment particles in water-based inks. The nanogels were prepared using electron beam-induced chemical reactions and showed good dispersion and stabilization properties. The use of nanogels in ink formulation improved the ink's hiding power, lightfastness, and resistance properties.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Shan Wan, Huikai Chen, Bokai Liao, Xingpeng Guo
Summary: In this study, 2-amino-5 mercapto-1,3,4-thiadiazole (ATT) was used as an intercalating agent to prepare ATT/BNNS nanofillers via a liquid-phase assisted ultrasound method. TEM results showed that ATT successfully exfoliated BNNS and reduced agglomeration. The WEP ATT/BNNS coating exhibited the best protective performance under saline immersion due to the combined action of ATT inhibitor and BNNS physical barrier.
PROGRESS IN ORGANIC COATINGS
(2024)
Review
Chemistry, Applied
Lijie Yin, Bo Zhang, Ming Tian, Nanying Ning, Wencai Wang
Summary: This paper reviews the recent progress in the synthesis of bio-based waterborne polyurethanes (BWPU) and focuses on its applications in coatings, adhesives, and antimicrobials. BWPU has attracted much attention due to its good physical and chemical properties, no VOCs emissions, exploitation of renewable substances, and structural design-ability.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yuyang Zhou, Yang Chen, Xinming Cao, Haodong Fu, Yun Li, Yonghui Zhang, Jun Ma, Xin Liu
Summary: This study proposes a strategy to fabricate a high-strength double-layer superhydrophobic actuator, which consists of a metal/glass-based superhydrophobic substrate and a polymer superhydrophobic coating. The coating has high adhesive strength, self-cleaning, anti-ultraviolet irradiation, and anti-stripping properties, along with photothermal and magnetic response capabilities, enabling its application in various fields.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Fengbiao Chen, Fei Gao, Xinru Guo, Yu Chen, Xuelang Gao, Liang Shen
Summary: In this study, various covalent adaptable networks (CANs) were synthesized using multifunctional amines and compared with CANs prepared from primary and secondary amines. The results showed that the performance of CANs is closely related to the crosslinking density, and increasing the content of secondary amines improves the performance but weakens the dynamics.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Qian Zhang, Mengyi Shen, Xingcai Liu, Hao Fu, Wenbo Yang, Jinyuan Zhao, Jian Wang, Yaping Du, Chunjie Ma
Summary: Rare earth-containing corrosion inhibitors were successfully synthesized and added into epoxy coatings for the anti-corrosion of steel materials. The results showed that the coatings with rare earth elements had better anti-corrosion performance, and this difference in performance could be explained by the inherent properties of rare earth elements.
PROGRESS IN ORGANIC COATINGS
(2024)