Article
Biochemistry & Molecular Biology
Ioanna Christodoulou, Pengbo Lyu, Carla Vieira Soares, Gilles Patriarche, Christian Serre, Guillaume Maurin, Ruxandra Gref
Summary: Metal-organic frameworks (MOFs) have gained interest in biomedical applications, with the mesoporous iron(III) carboxylate MIL-100(Fe) being one of the most studied MOF nanocarriers. Nanosized MIL-100(Fe) particles coordinate with drugs to achieve high drug loading and controlled release. A study investigated the interactions between the anticancer drug prednisolone and nanoMOFs, showing that prednisolone with phosphate groups had the strongest interactions and slowed down degradation, while prednisolone with sulfate groups had lower efficiencies and easily released in phosphate media. The nanoMOFs maintained their structure even after drug loading and degradation. Scanning electron microscopy and X-Ray energy-dispersive spectrometry were used to analyze the structural evolution.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Youjie Sheng, Canbin Yan, Yang Li, Yunchuan Peng, Li Ma, Qiuhong Wang
Summary: This study investigates the potential application prospects and characteristics of foams stabilized by nanoparticles, water-soluble polymers, and surfactants in the development of firefighting foams. The addition of NPs and XG improves foam stability and thermal stability, while slowing down foam drainage and coarsening.
Article
Medicine, Research & Experimental
Michael I. Henderson, Yulia Eygeris, Antony Jozic, Marco Herrera, Gaurav Sahay
Summary: This study investigates the impact of commonly used biological buffers on the performance and durability of mRNA-LNPs and finds that Tris or HEPES buffers contribute to better stability and transfection efficiency compared to PBS.
MOLECULAR PHARMACEUTICS
(2022)
Article
Nanoscience & Nanotechnology
Barbara Pem, Marija Curlin, Darija Domazet Jurasin, Valerije Vrcek, Rinea Barbir, Vedran Micek, Raluca M. Fratila, Jesus M. de la Fuente, Ivana Vinkovic Vrcek
Summary: This study investigated the biotransformation patterns of AgNPs following oral administration, revealing that AgNPs can quickly transform under different biological conditions and degrade to an ionic form before reconstructing into a nanoparticulate form depending on specific body compartments. AgNPs were found not to retain their specific integrity in in vivo settings, in line with previous research on inorganic nanoparticles.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2021)
Article
Chemistry, Physical
Youjie Sheng, Shanwen Zhang, Die Hu, Li Ma, Yang Li
Summary: In this study, mixed foam dispersions were prepared using hydrophilic silica nanoparticles, siloxane surfactant, and hydrocarbon surfactant. The interaction between surfactant molecules and nanoparticles, as well as the foamability of the dispersions, were analyzed. The thermal stability of the foam was evaluated through foam drainage, coarsening, and volume decay under thermal radiation. The presence of nanoparticles enhanced foam stability and delayed foam coarsening, drainage, and volume decay under thermal radiation. This research provides theoretical guidance for the development of fluorine-free firefighting foams.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Daniel Valdeperez, Nicole Wutke, Lisa-Maria Ackermann, Wolfgang J. Parak, Markus Klapper, Beatriz Pelaz
Summary: Amphiphilic copolymers with various charged side chains were used to coat hydrophobic gold nanoparticles (Au NPs) in order to stabilize them in aqueous solution. The interactions between the coated NPs and their environment were studied, as well as the influence of the coating on the NPs' stability.
INORGANICA CHIMICA ACTA
(2022)
Review
Materials Science, Ceramics
Andressa da Cruz Schneid, Lindomar Jose Calumby Albuquerque, Gabriela Borba Mondo, Marcelo Ceolin, Agustin Silvio Picco, Mateus Borba Cardoso
Summary: This review article provides an overview of the common and promising strategies for generating colloidally stable silica nanoparticles (NPs) in simulated biological fluids, and highlights the latest advances in producing degradable silica-based structures. The article emphasizes the potential of silica NPs as versatile nano-platforms for imaging and disease treatment, while acknowledging the challenges arising from their colloidal stability loss and possible aggregation and degradation in biological fluids. Strategies to overcome these challenges, such as surface functionalization and chemical modification, are discussed. The article underscores the importance of understanding the behavior of silica NPs in body fluids for the approval of nanomedicines and calls for further research on the dynamics, thermodynamics, biological response, and structural parameters of silica-based NPs.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Dayanne Pinho Rosa, Fabiano Torres Cruz, Evaldo Vitor Pereira, Maria Aparecida Cicilini, Jamil Silvano de Oliveira, Angelo Marcio Leite Denadai, Alexandre Martins Costa Santos
Summary: The study compared the enzymatic, structural, and energetic properties of bovine beta- and alpha-trypsin isoforms in aqueous-organic media, showing that the changes induced on the structure and activity of the same trypsin isoform occur at different concentrations. Better activity results were found for beta-trypsin in ethanolic media, with activity about 60% higher than alpha-trypsin.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Youjie Sheng, Hanling Zhang, Ying Guo, Li Ma, Qiuhong Wang, Die Hu
Summary: In this study, mixed dispersions of anionic amino acid surfactant (SLG), nonionic alkyl glycoside surfactant (APG0810), and silica nanoparticles (NPs) were prepared to develop environmentally friendly firefighting foams. The presence of NPs resulted in decreased conductivity and surface tension of the mixed dispersion, while slightly affecting the viscosity. The foamability of the mixture decreased with increasing NP concentration, and the presence of NPs affected the drainage and coarsening of the foam.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Multidisciplinary
Ahmad H. Milyani, Meshari A. Al-Ebrahim, Eyad T. Attar, Nidal H. Abu-Hamdeh, Mohamed E. Mostafa, Osama K. Nusier, Aliakbar Karimipour, Binh Nguyen Le
Summary: Recent studies on nanofluids have not given enough attention to the impact of nanoparticle size and nanofluid stability on heat transfer rate. This study investigated the thermal conductivity coefficient of silica/deionized water nanofluid with different nanoparticle sizes and varying degrees of nanofluid stability. The results showed that increasing temperature and nanofluid concentration led to an increase in the thermal conductivity coefficient of the nanofluid.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Suhas D. Doke, C. M. Patel, V. N. Lad
Summary: This study demonstrates the successful formation of silica nanoparticles with tuned properties using a wet attrition mill, and highlights the importance of effective utilization of surfactants in improving the efficiency and quality of SiNPs synthesis.
Article
Polymer Science
Kyung-Min Kim, Hoon Kim, Hyun-Joong Kim
Summary: The thermal and mechanical properties of epoxy/fumed silica composite can be improved by different surface treatments of fumed silica. The addition of silica nanoparticles enhances the thermal stability and flexural strength of the composite, making it commercially promising.
Article
Chemistry, Physical
A. Pazini, L. Maqueira, J. M. F. Facanha, A. Perez-Gramatges
Summary: In this study, core-shell silica-based fluorescent SiNPs were used as tracers to investigate the transport of nanofluids containing surfactants in porous media. The SiNPs with aminopropyl surface groups showed the best stability and lowest adsorption during the transport process. These fluorescent NPs have the potential to be sensitive tracers for transport and adsorption studies in nanofluids containing surfactants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Peter A. Bielecki, Morgan E. Lorkowski, Wyatt M. Becicka, Prabhani U. Atukorale, Taylor J. Moon, Yahan Zhang, Michelle Wiese, Gil Covarrubias, Shruthi Ravichandran, Efstathios Karathanasis
Summary: The study focused on using an immunostimulatory mesoporous silica nanoparticle, termed immuno-MSN, to boost the local innate immune compartment of GBM and enhance the antitumor immune response, resulting in elevated pro-inflammatory effects.
NANOSCALE HORIZONS
(2021)
Article
Chemistry, Physical
Zhe Fan, Li Zhang, Wenwen Di, Kuncheng Li, Gongrang Li, Dejun Sun
Summary: The study showed that silica nanoparticles grafted with short-chain alkyl groups can stabilize Pickering emulsions, leading to weakly temperature-dependent rheological properties. The nearly constant rheological properties observed when using these nanoparticles are attributed to the nearly constant solvation in the temperature range studied, offering potential applications in the cosmetics and petroleum industries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Sungmoon Choi, Yujin Jeong, Junhua Yu
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2017)
Article
Nanoscience & Nanotechnology
Sungmoon Choi, Junhua Yu
Article
Chemistry, Physical
Seong Mi Jeon, Sungmoon Choi, Kwahun Lee, Hak-Sung Jung, Junhua Yu
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2018)
Article
Chemistry, Physical
Sungmoon Choi, Yanlu Zhao, Junhua Yu
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2019)
Article
Biology
Yanlu Zhao, Minyoung Lim, Sungmoon Choi, Junhua Yu
Summary: The photophysical properties of nanoparticles are essential for cellular imaging. This study reveals the importance of the excitation spectrum in determining the optimal excitation wavelength for nanoparticles, which has been overlooked by chemists and biologists.
JOURNAL OF BIOLOGICAL EDUCATION
(2022)
Article
Chemistry, Physical
Yanlu Zhao, Sungmoon Choi, Junhua Yu
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Chemistry, Multidisciplinary
Hyung Jun Park, Dong Jun Shin, Junhua Yu
Summary: This article clarifies the definitions of four terms: quantum dots, nanodots, nanoclusters, and clusters, presenting their historical usage and research trends over the last five years. Based on the size and photophysical properties of these particles, clear and transferrable definitions are proposed for interdisciplinary use.
JOURNAL OF CHEMICAL EDUCATION
(2021)
Article
Chemistry, Multidisciplinary
Yanlu Zhao, Sungmoon Choi, Sungjay Hong, Eunhye Lee, Junhua Yu
Summary: Controlling the spatial and temporal aspects of fluorogenic reactions is crucial in cellular staining and fluorophore printing. This study demonstrates the selective generation of versatile spectrally pure luminescent silver nanodots by transferring silver clusters from polymers to single-stranded DNA (ssDNA). This transfer process dramatically enhances the emission intensity of the silver nanodots and offers advantages in terms of spectral range and speed of fluorophore generation. Additionally, multiple silver nanodots can be generated in a single step, making it applicable for visualizing printed ssDNA on silver nanodots in solution and on surfaces.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Eunhye Lee, Sungmoon Choi, Yanlu Zhao, Junhua Yu
Summary: This study utilizes luminescent poly(acrylic acid) (PAA)-stabilized silver nanodots (PAA-AgNDs) as a turn-on sensor to monitor the interaction between the PAA chain and its binding cations. The binding of cations cross-links the linear PAA chain, enhances the emission of silver nanodots, and induces a blue-shift of its emission spectrum. Calcium ions show the strongest bonding to the PAA polymer chain among Group 2 cations. The research also demonstrates that luminescent silver nanodots can be excellent probes for the detection of polymer activities with straightforward visualization methods.
Article
Chemistry, Multidisciplinary
Sungjay Hong, Yanlu Zhao, Sungmoon Choi, Eunhye Lee, Junhua Yu
Summary: Silver nanodots, which emit predominantly near-IR, can be instantly created on a surface through silver cluster transfer. The reorganization of these nanodots is limited by the presence of ssDNA molecules on the surface. Adjusting the freedom of the adsorbed ssDNA allows for the generation of various types of silver nanodots on the surface.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Sungmoon Choi, Minyoung Lim, Yanlu Zhao, Junhua Yu
NANOSCALE ADVANCES
(2019)