Article
Polymer Science
Thomke Belthle, Dan E. Demco, Andrij Pich
Summary: The internal nanostructure of stimuli-responsive microgels can be tailored by manipulating their chemical composition and morphology. In this study, microgels with phase-separated domains on a nanoscopic length scale were synthesized by copolymerization of N-vinylcaprolactam and amphiphilic-to-hydrophobic 1-vinyl-3-alkylimidazolium bromides. The synthesized microgels exhibited dual functionality for payload immobilization through electrostatic and hydrophobic interactions. The morphologies and properties of the microgels were systematically investigated using NMR spectroscopy and relaxometry.
Article
Chemistry, Multidisciplinary
Jan-Falk Kannengiesser, Max Briesenick, Dennis Meier, Volker Huch, Bernd Morgenstern, Guido Kickelbick
Summary: Novel representatives of organosilanols were synthesized in this study by hydrolysis of alkoxy- or chlorosilanes, with aromatic substituents applied to study their structure and reactivity. Si-29 NMR and H-1 NMR spectroscopy revealed electronic situations induced by substitution patterns and strong intermolecular hydrogen bonds, while X-ray crystallography showed interactions between aromatic systems and hydrogen bonding in silanol structures.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Food Science & Technology
Changhao Wang, Yunyan Li, Yanqin Lin, Yonghua Wang, Zhong Chen, Lei Zhu, Junfeng Wang
Summary: In this study, the accumulation of POPC hydrolysates in a phospholipase A1 (PLA1)-catalysed POPC hydrolysis system in an aqueous emulsion caused sample heterogeneity. The researchers overcame this issue by using the IDEAL-II sequence to obtain high-resolution 1H intermolecular double quantum coherence (iDQCs) NMR spectra, allowing for real-time identification and tracking of POPC and its hydrolysates, as well as providing direct evidence of the enzymatic hydrolysis process.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Muhammad Arif
Summary: The unique combination of cobalt nanoparticles and smart polymer microgels has attracted great interest in the production of hydrogen gas and removal of toxic dyes from water. The responsive behavior of microgels makes cobalt nanoparticle-loaded microgels most suitable for these applications. Various types of cobalt nanoparticle microgels have been reported in the literature, with hybrid microgel formations playing an important role. This report provides a comprehensive review of the synthesis, classification, characterization, and applications of cobalt nanoparticle microgels, with a focus on their catalytic generation of hydrogen and reduction of pollutants.
Article
Chemistry, Inorganic & Nuclear
Xiu-Juan Tian, You-Zhu Yu, Qian Lu, Xian-Ming Zhang
Summary: High-valence tin-oxo clusters have structural diversity and potential applications. The synthesis of these clusters is challenging, but this study successfully synthesized various organic-inorganic hybrid tin-oxo clusters and explored the relationship between structure and properties.
INORGANIC CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Iveta Uhliarikova, Maria Matulova, Peter Capek
Summary: The study investigated the optimal conditions for total acid hydrolysis of acidic lactylated Nostoc cf. linckia exopolysaccharide (EPS) using trifluoroacetic acid (TFA). Results showed that 2M TFA, 110 degrees C, 3 hours were the most optimal. The stability of the EPS monosaccharide components was explored, revealing low stability under all tested conditions.
CARBOHYDRATE RESEARCH
(2021)
Article
Chemistry, Analytical
Derrick C. Kaseman, Michael W. Malone, Aaron Tondreau, Michelle A. Espy, Robert F. Williams
Summary: This study investigates the quantitative analysis of nuclear magnetic resonance (NMR) at Earth's magnetic field, finding that the quantitation process at low magnetic fields is impacted by complex heteronuclear J-couplings, requiring consideration of instrumentation, acquisition, and processing methods. The re-derived constant field nuclear receptivity equation plays a key role in addressing strong coupling and quality factor effects, enabling the quantitation of homonuclear molecular groups in a simplified experimental system.
ANALYTICAL CHEMISTRY
(2021)
Article
Polymer Science
A. Rajbanshi, M. A. da Silva, D. Murnane, L. Porcar, C. A. Dreiss, M. T. Cook
Summary: This study investigates the generation of thermoresponsive emulsions that switch from a low-viscosity emulsion to a gel state upon warming. The researchers synthesized novel branched copolymer surfactants (BCS) and found that the polymer architecture plays a vital role in the rheology of the emulsions. Small-angle neutron scattering experiments revealed the mechanism of gel formation, where the branching copolymer surfactants formed elongated particles in solution, leading to thickening of the emulsions. The connectivity of aggregates and BCS at the oil-water interface is required for gel formation. Overall, this study provides design principles for a novel class of thermoresponsive material with great potential in healthcare, cosmetic, and energy applications.
Article
Chemistry, Analytical
Qiao Lin, Chunwang Meng, Jie Liu, Fei Liu, Qinmei Zhou, Juan Liu, Cheng Peng, Liang Xiong
Summary: With the development of NMR spectrometers and probes, 2D qNMR technology has become increasingly accessible for quantitation of complex mixtures. However, the need for a long relaxation recovery time makes it difficult for 2D qNMR to achieve high quantitative accuracy and data acquisition efficiency. By using relaxation optimization and nonuniform sampling, we successfully established an optimized 2D qNMR strategy for accurate quantitation of diester-type C-19-diterpenoid alkaloids.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Guanghu Tong, Ryan A. Shenvi
Summary: The plant metabolite picrotoxinin (PXN) is commonly used in neuroscience to study GABAergic signaling. The hydrolysis of PXN in weakly alkaline media actually occurs at a closed lactone, contributing to a longstanding misunderstanding in the literature.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Plant Sciences
Junfeng Lei, Lili Shen, Wei Zhang, Fangchao Ma, Jingchen Wang, Tingting Wei, Chengping Xie, Yanli Wang, Qiang Wang
Summary: This study analyzed the metabolic profiling of potato powders from different processing methods and commercial potato powders using H-1 NMR-based metabolomics and machine learning projections. The results showed that hot air-dried potatoes had higher levels of fumarate, glucose, malate, asparagine, choline, GABA, alanine, lactate, threonine, and fatty acids. On the other hand, steam-cooked potatoes had higher levels of phenylalanine, sucrose, proline, citrate, glutamate, and valine. Moreover, the metabolite contents in processed potatoes were higher than those in commercial potato powders, regardless of the drying or cooking methods used. These findings suggest the potential for developing new processing techniques to improve the nutritional value of potatoes.
PLANT FOODS FOR HUMAN NUTRITION
(2023)
Article
Chemistry, Multidisciplinary
Eric Girard, Pedro Lopes, Michael Spoerner, Anne-Claire Dhaussy, Thierry Prange, Hans Robert Kalbitzer, Nathalie Colloc'h
Summary: In this study, the researchers used high pressure crystallography to investigate the allosteric transitions of Ras protein. They found that pressure can shift the equilibria between different conformational states, providing insight into the structural plasticity involved in Ras protein's allosteric equilibria.
Article
Chemistry, Physical
Xinzi Zhou, Haiyun Hou, Junru Wang, Luohong Zhang, Haojun Shi, Yijun Lan, Yanping Du, Jing Yang, Chang Liu
Summary: A detailed investigation was conducted on binary mixtures containing 1-alkylimidazole, revealing that the mixing process is a spontaneous enthalpy-driven process with stronger attractive interactions than in pure liquids, primarily through hydrogen bonding interactions.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Aastha Gupta, Ankita Dhiman, Ankur Sood, Ravi Bharadwaj, Neal Silverman, Garima Agrawal
Summary: In this study, disulfide crosslinked dextran/eudragit S-100 nanoparticles (DEEU NPs) were developed for colorectal cancer treatment. These redox environment sensitive DEEU NPs showed high encapsulation efficiency for the doxorubicin (DOX) model drug and exhibited significant release in the reducing environment. The DOX-DEEU NPs demonstrated enhanced cytotoxicity for cancer cells and the in vivo biodistribution results indicated their potential as a promising platform for colorectal cancer treatment.
Article
Chemistry, Multidisciplinary
Manami Nakamura, Md Saidul Islam, Mohammad Atiqur Rahman, Rabin Nurun Nahar, Masahiro Fukuda, Yoshihiro Sekine, Jorge N. Beltramini, Yang Kim, Shinya Hayami
Summary: The study demonstrates the microwave-assisted hydrolysis of cellulose to glucose using POM catalysts, with Keggin-type POM catalysts showing higher efficiency compared to Wells-Dawson type. Optimal conditions lead to a glucose yield of 77.2% and cellulose conversion of 90.1%, highlighting the efficacy of the conversion process with POM catalysts.
Article
Chemistry, Organic
Maria de Gracia Retamosa, Abel de Cozar, Mirian Sanchez, Jose I. Miranda, Jose M. Sansano, Luis M. Castello, Carmen Najera, Ana I. Jimenez, Francisco J. Sayago, Carlos Cativiela, Fernando P. Cossio
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2015)
Article
Chemistry, Organic
Zaira Monasterio, Maialen Sagartzazu-Aizpurua, Jose I. Miranda, Yuri Reyes, Jesus M. Aizpurua
Article
Chemistry, Organic
Zaira Monasterio, Aitziber Irastorza, Jose I. Miranda, Jesus M. Aizpurua
Article
Chemistry, Physical
Sil Nevejans, Nicholas Ballard, Jose I. Miranda, Bernd Reck, Jose M. Asua
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Chemistry, Organic
Petr Vins, Abel de Cozar, Ivan Rivilla, Katerina Novakova, Ronen Zangi, Josef Cvacka, Iosune Arrastia, Ana Arrieta, Pavel Drasar, Jose I. Miranda, Fernando P. Cossio
Article
Chemistry, Multidisciplinary
Raluca M. Fratila, Marcos Navascuez, Javier Idiago-Lopez, Maite Eceiza, Jose I. Miranda, Jesus M. Aizpurua, Jesus M. de la Fuente
NEW JOURNAL OF CHEMISTRY
(2017)
Article
Chemistry, Multidisciplinary
Ivan Rivilla, Abel de Cozar, Thomas Schafer, Frank J. Hernandez, Alexander M. Bittner, Aitziber Eleta-Lopez, Ali Aboudzadeh, Jose I. Santos, Jose I. Miranda, Fernando P. Cossio
Article
Chemistry, Multidisciplinary
Alberto Cayuelas, Olatz Larranaga, Veronica Selva, Carmen Najera, Takahiko Akiyama, Jose M. Sansano, Abel de Cozar, Jose I. Miranda, Fernando P. Cossio
CHEMISTRY-A EUROPEAN JOURNAL
(2018)
Article
Chemistry, Organic
Maddalen Agirre, Sylvain Henrion, Ivan Rivilla, Jose I. Miranda, Fernando P. Cossio, Bertrand Carboni, Jose M. Villalgordo, Francois Carreaux
JOURNAL OF ORGANIC CHEMISTRY
(2018)
Article
Chemistry, Organic
Olatz Larranaga, Jose I. Miranda, Fernando P. Cossio, Abel de Cozar
JOURNAL OF ORGANIC CHEMISTRY
(2018)
Article
Chemistry, Applied
Maria Goretti Llamas-Arriba, Ana I. Puertas, Alicia Prieto, Paloma Lopez, Monica Cobos, Jose I. Miranda, Cristina Marieta, Patricia Ruas-Madiedo, Ma Teresa Duenas
FOOD HYDROCOLLOIDS
(2019)
Article
Multidisciplinary Sciences
Ivan Rivilla, Borja Aparicio, Juan M. Bueno, David Casanova, Claire Tonnele, Zoraida Freixa, Pablo Herrero, Celia Rogero, Jose Miranda, Rosa M. Martinez-Ojeda, Francesc Monrabal, Benet Olave, Thomas Schafer, Pablo Artal, David Nygren, Fernando P. Cossio, Juan J. Gomez-Cadenas
Article
Chemistry, Medicinal
Jesus M. Aizpurua, Jose Miranda, Aitziber Irastorza, Endika Torres, Maite Eceiza, Maialen Sagartzazu-Aizpurua, Pablo Ferron, Garazi Aldanondo, Haizpea Lasa-Fernandez, Pablo Marco-Moreno, Naroa Dadie, Adolfo Lopez de Munain, Ainara Vallejo-Illarramendi
Summary: The study investigated the hypothesis of rescuing FKBP12/RyR1 interaction and intracellular calcium homeostasis through molecular reshaping of FKBP12. Novel triazoles were designed and synthesized, showing potential as therapeutic candidates for muscle disorders with nitro-oxidative stress, FKBP12/RyR1 dysfunction, and calcium dysregulation.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
N. Almenara, J. Miranda, A. Rodriguez-Dieguez, M. A. Garralda, M. A. Huertos
DALTON TRANSACTIONS
(2019)
Article
Biochemistry & Molecular Biology
Nerea Zabala-Uncilla, Jose I. Miranda, Antonio Laso, Xavier Fernandez, Jose I. Ganboa, Claudio Palomo
Article
Polymer Science
Mustafa Kalay, Abidin Esidir, Mahmut Ruzi, N. Burak Kiremitler, Mustafa Serdar Onses
Summary: This study proposes stable and addressable polymer PUFs, utilizing a cross-linkable polymer system, which demonstrates high stochastic characteristics and low-cost production. The performance of the polymer features is evaluated through various analyses, and direct image authentication is achieved using feature matching algorithms.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Jingyu Jin, Guoqiang Lu, Jun Nie, Xiaoqun Zhu
Summary: Photopolymerization technology is limited in the fields of food packaging and biomedicine due to the high migration of small molecules from photoinitiators. In this study, a polymerizable 2-vinyl thioxanthone (ETX) was synthesized to improve the migration stability of photoinitiators. Macromolecular photoinitiators (PPI1, PPI2) were also prepared to further reduce migration. The results showed that the ETX/TEOA system had higher initiation performance and PPI2 displayed favorable initiation ability. Additionally, the migration of ETX, PPI1, and PPI2 in photocured film was significantly reduced. These low-migration photoinitiators have potential applications in the fields of food packaging and biological materials.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Weijie Li, Jun Nie, Yingying Zhao, Xiaoqun Zhu
Summary: This study focuses on the development of high-performance, low-migration photoinitiators. A polymerizable photoinitiator (VBP) was synthesized by introducing an ethylene group into benzophenone, and three different molecular weight single-component photoinitiators (PVBN1-3) were synthesized based on VBP. The results show that these new photoinitiators have stronger absorption ability compared to benzophenone and significantly reduce the migration of initiators and co-initiators, addressing the safety concerns caused by migration.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Seira Morimune-Moriya, Yuki Iwahashi, Mitsuru Nakamura, Daisuke Ogawa, Keiji Nakamura
Summary: This study investigates the effect of plasma treatment on carbon nanotubes (CNTs) and the structure/properties of polyimide (PI) nanocomposites with ultra-low content of CNTs. The results show that plasma treatment introduces isocyanate groups on the surface of CNTs and enhances the interfacial interaction between PI and treated CNTs. This leads to a significant improvement in the mechanical properties of the nanocomposites, with even a small addition of treated CNTs showing a substantial increase in Young's modulus, tensile strength and toughness.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Yuanlong Li, Chaojie Chen, Guoqing Cui, Li Liu, Chao Zhou, Guangfeng Wu
Summary: In this study, a novel ion-conducting hydrogel was fabricated using a straightforward approach. The hydrogel showed excellent tensile properties and high toughness due to physical interactions and covalent binding. Additionally, the introduction of hydroxyethyl cellulose and lithium chloride improved the biocompatibility, mechanical properties, electrical conductivity, and frost resistance of the hydrogel, demonstrating its potential for cold climate applications.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Dengwei Yan, Jinxian Yang, Xuejun Pan, Xiaozheng Duan, Lianwei Li, Mo Zhu
Summary: The influence of backbone length on grafting efficiency during the graft-onto reaction process was investigated. It was found that the polydispersity effect of backbone length does not affect the final grafting efficiency, indicating that the local dynamics of chain segments dominate the graft-onto process.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Zhaoyi Luo, Xianjie Pan, Fanqi Liu, Quanxi Yi, Yanning Zeng, Yunhua Chen, Chaoyang Wang
Summary: This study provides a method to prepare high-performance epoxy materials with good malleability and thermal stability. The materials have self-healing and welding capabilities, thanks to the addition of specific chemical bonds and network structures. They exhibit mechanical properties comparable to commercial epoxy resins and show great potential for sustainable industrial development.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Chaoji Xiong, Hao Wang, Lihua Deng, Kun Liang, Chunhua Wu, Wei Wu, Qian Chen
Summary: In this study, four polyamides were synthesized and their adsorption performances for Hg2+ in aqueous systems were investigated. The polyamides exhibited high adsorption capacities and excellent reusability, with the involvement of sulfur, nitrogen, and oxygen in the chemical adsorption process of Hg2+.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Siim Laanesoo, Olivier Bonjour, Rauno Sedrik, Iris Tamsalu, Patric Jannasch, Lauri Vares
Summary: The insertion of rigid aliphatic or aromatic building blocks in polymer structures is an effective way to synthesize high -Tg polymer materials. In this study, a series of isosorbide-2-aryl carboxylate-5-methacrylate monomers (ArIMAs) were synthesized by functionalizing isosorbide 5-methacrylate with various aromatic lignin-inspired esters. These monomers were polymerized to obtain high molecular-weight poly(aryl carboxylate isosorbide methacrylates) (PArIMAs). The resulting polymers showed high glass transition temperatures and thermal stability, making them suitable for use as high-performance plastics and coatings.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Yuqian Wu, Weijie Xu, Jianliang Li, Zhangfeng Zhong, Liqing Huang, Shengke Li, Huaping Tan
Summary: This study investigates the improvement of degradation and drug release characteristics of dynamic Schiff base-mediated natural polysaccharide hydrogels using tannic acid (TA), leading to enhanced stability and functionality.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Xi Zhang, Xiangli Kong, Xin Zhou, Yiyan Gao, Yibo Sun, Guanghui Gao, Wei Liu, Kai Shi
Summary: Conductive hydrogels have great development prospects in flexible strain sensors, but long-term direct contact with human skin can cause bacterial infection. A hydrogel with antibacterial, biocompatibility, and toughness was designed and manufactured using a freeze-thaw method. The hydrogel maintains tensile properties and fatigue resistance at low temperatures and is resistant to bacteria. Therefore, hydrogel sensors can be used to monitor human movements.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Wei Zhang, Jiangang Yu, Mingyang Wu, Rui Li, Anqiang Zhang, Yaling Lin
Summary: In this study, polyacrylamide containing quaternary ammonium salts (PAM-X) were synthesized and found to effectively inhibit soil-borne pathogenic fungi while maintaining the balance of microbial population in soil. PAM-X also showed low toxicity to earthworms and fish, providing a new method for the prevention and control of soil-borne fungal diseases.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Jiawen He, Haojie Yu, Li Wang, Jian Yang, Yanhui Zhang, Wenbing Huang, Chenguang Ouyang
Summary: This review discusses the use of polymeric hydrogels for atmospheric water harvesting (AWH), including the mechanism of water sorption, fabrication methods, and strategies for optimizing the structure of hydrogels. The extended applications of hygroscopic photothermal hydrogels, such as agricultural irrigation and dehumidification, are also explored. The challenges and prospects of using polymeric hydrogels for AWH are summarized.
EUROPEAN POLYMER JOURNAL
(2024)
Article
Polymer Science
Ying Du, Shuaishuai Lu, Yuanna Sun, Qingshan Li, Xinhai He
Summary: This study introduces a method to improve the performance of hydrogels by incorporating proline, resulting in hydrogels with excellent stretchability, high conductivity, and long-term stability. The hydrogel remains flexible and conductive even at ultra-low temperatures.
EUROPEAN POLYMER JOURNAL
(2024)
