Article
Chemistry, Organic
Mikhail Kozlov, Alexey Tyurin, Andrey Dmitrenok, Vyacheslav Rusak, Aleksander Fedorov, Igor Zavarzin, Yulia Volkova
Summary: This study presents a novel and practical synthesis method for phosphorus-substituted 1,3,4-thiadiazolines using phosphorylthioformic acid hydrazides and ketones. The protocol demonstrates operational simplicity, availability of reagents, and tolerance towards different functional groups.
Article
Chemistry, Inorganic & Nuclear
Savannah C. Kapper, Aamani Ponnekanti, Jonas Schaab, Tian-yi Li, Christine L. Chung, Gael Ung, Peter I. Djurovich, Mark E. Thompson
Summary: Organometallic iridium complexes with two cyclometalated ligands and one bis-oxazoline derived ancillary ligand were studied. These complexes have emission spanning across the visible and near-ultraviolet region, with moderate to high photoluminescence quantum yields. The (ppy)2Ir(BOX-CN) complexes were resolved into Delta- and Lambda-diastereomers based on solubility differences.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Applied
Fan Cheng, Yikai Ren, Thomas D. Warkentin, Yongfeng Ai
Summary: Heat-moisture treatment (HMT) was used to modify wrinkled and round pea starches, resulting in changes in their physical and chemical properties. The modified pea starches had higher gelatinization temperatures, lower gelatinization enthalpy changes, reduced gel hardness, enhanced enzymatic resistance, and improved thermal stability. Additionally, the modified samples showed stronger molecular entanglement during the gelatinization process, leading to higher pasting viscosities and firmer gels. The HMT-modified pea starches with a more diverse range of functionalities and increased resistant starch content have the potential to be used as new ingredients in food applications.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Feiyu Zhang, Peng Wang, Mingyuan Huang, Xinglian Xu
Summary: This study investigates the influence of chitosan concentrations on the properties and stability of myofibrillar protein-based high internal phase emulsions (HIPEs) and finds that adding an appropriate amount of chitosan can enhance emulsion stability and interfacial adsorption capacity, while excessive concentrations can decrease printability.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Jiatong Xu, Pengguang Wang, Baihua Yuan, Hongbin Zhang
Summary: Nanocellulose, a sustainable nanomaterial, has attracted increasing attention due to its versatile applications. This study investigated the viscoelasticity, thixotropy, and yielding behavior of two commonly used nanocelluloses, rod-shaped cellulose nanocrystals (CNCs) and filamentous cellulose nanofibrils (CNFs), to explore their relationship with the structure. The rheological properties of the two suspensions showed strong dependence on concentration and time. CNF suspensions exhibited stronger thixotropy and higher yield stress compared to CNC suspensions, attributed to the higher aspect ratio and stronger structural skeleton of CNF suspensions.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Inorganic & Nuclear
Theodor Danescu, Alexandru Lupan, Radu Silaghi-Dumitrescu, R. Bruce King
Summary: The structures and energies of complexes containing (Me2C2N2P)2Ru2(CO)n and (Me2C2N2P)2Fe2(CO)n have been studied. Low-energy structures are characterized by the presence of bridging diazaphospholyl rings, while higher-energy structures involve different ligand structures.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Applied
Mingfei Huang, Siqi Guo, Zhimin Li, Xingyun Peng
Summary: CCVJ can serve as an in-situ structural probe for LGC, with low-DP α-D-1,4 oligomers showing higher emission intensity compared to high-DP α-D-1,4 polymers. The emission intensity of CCVJ exhibits a double-logarithmic linear relationship with the molar-based molecular weight of glucan.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Diana C. Novo, Kevin J. Edgar
Summary: Polysaccharides are widely used in biomedical applications, such as therapeutic agents and sensors, due to their compatibility with various tissues. Fluorescent labeling allows for sensitive monitoring of polysaccharide-based materials, improving drug-delivery system design. This review discusses fluorophore selection, methods of attaching polysaccharides, and the utility of fluorescent polysaccharides as smart materials in biomedicine, focusing on their applications as environment-sensitive biosensors, imaging tools, and molecular rulers. The advantages, disadvantages, and future prospects of these self-reporting materials are also explored.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Tanmay Bharadwaj, Shreya Chrungoo, Devendra Verma
Summary: Chitosan-based thermosensitive bioink has great potential for bone tissue engineering due to its excellent biocompatibility and gelation at physiological temperature without the need for crosslinkers. However, it has limitations in terms of low mechanical strength, poor printability, and low post-printing cell viability. This study incorporated self-assembled nanofibrous aggregates and nanohydroxyapatite into chitosan-based bioinks to improve their printability, mechanical properties, and cell viability. The optimized nanocomposite bioink showed good printability, high cell viability, low water uptake, and degradation in the presence of lysozyme. The bioink also exhibited a suitable elastic modulus and enhanced cellular activity in osteogenic media.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Chewapat Saejung, Saitharn Phonaiam, Prawphan Kotthale, Anuwat Chaiyarat
Summary: In this study, bacterial cellulose was incorporated in alginate to improve the mechanical properties and recycling time of immobilized bacteria for effective removal of cooking oil residues. The reinforced beads showed enhanced stability and increased oil removal efficiency.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Ming Li, Gongwen Liu, Shuang Liu, Xialian Xiao, Yun Bai, Yali Li, Xingxing Li, Yibao Li
Summary: A transparent regenerated cellulose film with reversible multi-stimulus discoloration property was manufactured using a universal dissolution-regeneration technique. This functional film, synthesized by introducing a cellulose-grafted azobenzene derivative into the cellulose solution, exhibited both photochromic and acid-chromic attributes.
CARBOHYDRATE POLYMERS
(2024)
Review
Chemistry, Applied
Liang Dong, Yanan Li, Hailin Cong, Bing Yu, Youqing Shen
Summary: Gene therapy is a revolutionary treatment that requires suitable vectors for protecting and releasing exogenous nucleic acids in target cells. Chitosan, as a non-viral vector, has gained attention due to its good biocompatibility and ability to load large amounts of nucleic acids. This paper summarizes the potential of chitosan and its derivatives as gene delivery vector materials, discusses factors influencing transfection efficiency, performance evaluation, ways to optimize infectious efficiency, and current research development directions. It also provides an outlook on the future prospects of chitosan.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Roxane Abdel-Gawad, Rihab Osman, Gehanne A. S. Awad, Nahed Mortada
Summary: Interactive wound dressings combining healing and antimicrobial potentials, utilizing a three-dimensional structured matrix constructed with natural bio-macromolecules, demonstrated significant wound healing effects and antimicrobial activity. Injured rat experiments confirmed its excellent wound healing ability and minimal oxidative stress.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Inorganic & Nuclear
Moon Kedia, Virender Singh, Bhaskaran Shankar, Malaichamy Sathiyendiran
Summary: This study synthesized two types of neutral binuclear metallocycles using a one-pot solvothermal method and characterized their structures. The analysis revealed that these complexes adopt a binuclear heteroleptic cyclic architecture and belong to phosphine oxide donor (P=O)-based supramolecular coordination cyclic complexes.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Hao Zhou, Yajun Sun, Li Deng, Weiran Yang, Yuehui Li
Summary: Efficient Ru-catalyzed hydrogenation of aldehydes was achieved using carbazole-derived phosphine ligands, with the crucial role of N-H moiety in promoting the catalytic reaction. The method was successfully applied in the Co/Ru-catalyzed hydroformylation process, resulting in the production of long-chain alcohols with excellent yields.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Organic
Geeta Devi Yadav, Pooja Chaudhary, Balaram Pani, Surendra Singh
Summary: Chiral transition metal complexes with privileged ligands are efficient catalysts for various asymmetric organic transformations. Transition metal complexes of C1-symmetric pyrrolidine-based ligands have been widely used in asymmetric organic reactions. However, a comprehensive review article on the transition metal complexes of chiral C1-symmetric pyrrolidine-based ligands derived from (L)-proline has not been published.
TETRAHEDRON LETTERS
(2024)
Article
Chemistry, Organic
Hyunjin Oh, Ikyon Kim
Summary: A new 1,2,4-triazole-pyrrolo[1,2-a]pyrazine hybrid system, 6-acylpyrrolo[1,2-a][1,2,4]triazolo[5,1-c]pyrazine, was synthesized using a catalyst-free method. This method involved sequential exposure of pyrrole-2-carbonitrile-derived substrates to DMF-DMA and acyl hydrazide, resulting in the formation of acylated pyrazine and 1,2,4-triazole rings, enabling the installation of various substituents at specific positions on the core skeleton.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Ming Yan, Si-fan Wang, Yong-po Zhang, Jin-zhong Zhao, Zhuo Tang, Guang-xun Li
Summary: Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. The reaction allows for the gram-scale preparation of sulfinamides and the one-pot synthesis of various sulfonyl amides.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Farzaneh Bandehali-Naeini, Zahra Tanbakouchian, Noushin Farajinia-Lehi, Nicolas Mayer, Morteza Shiri, Martin Breugst
Summary: Two tandem catalytic systems were developed for the synthesis of novel 3,4-disubstituted maleimides using the same Ugi adducts. Different maleimide structures can be synthesized using either Pd or Cu catalysis.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Feroze Hussain, Sajjad Ahmed, Ashiq Hussain Padder, Qazi Naveed Ahmed
Summary: This study reports a novel and efficient one-pot synthesis method for mixed phosphorotrithioates, which does not require supplementary additives and shows broad applicability.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
