Article
Chemistry, Multidisciplinary
Shuo Lu, Tianyu Zheng, Jiawei Ma, Zhangming Deng, Shengmeng Qin, Yu Chen, Yong Liang
Summary: In this study, a new ionic ligand is developed and successfully used for the para-selective functionalization of aromatic salts. The reaction shows great potential in gram-scale transformation, late-stage elaboration for drug molecules, and diversification of products.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Qingyong Ren, Ji Qi, Dehong Yu, Zhe Zhang, Ruiqi Song, Wenli Song, Bao Yuan, Tianhao Wang, Weijun Ren, Zhidong Zhang, Xin Tong, Bing Li
Summary: A giant barocaloric effect has been observed in inorganic NH4I near room temperature, which could help overcome the driving field challenge in solid-state refrigeration. The material exhibits high reversible entropy changes and a structural phase transition. Analysis of the crystal structures and atomic dynamics reveals that a strong reorientation-vibration coupling is responsible for the pressure sensitivity. This research has the potential to advance the practical application of barocaloric refrigeration.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Christopher Mairhofer, Mario Waser
Summary: Dibenzoylperoxide was found to be a versatile oxidant for reactions of phenol derivatives with NaN3 catalyzed by quaternary ammonium iodide or bromide. The use of iodides allowed for efficient benzylic azidations, while the use of bromides allowed for dearomative azidations. Both methods have been successfully applied to various phenol derivatives, and an enantioselective variant using chiral quat. ammonium bromides has been demonstrated.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Stijn Lammar, Wouter Van Gompel, Stijn Lenaers, Martijn Mertens, Hans-Gerd Boyen, Derese Desta, Afshin Hadipour, Laurence Lutsen, Dirk Vanderzande, Anurag Krishna, Yaser Abdulraheem, Tom Aernouts, Jef Poortmans
Summary: We report the use of a BTBT derivative and a carbazole derivative to improve the interface between sputtered NiOx and halide perovskite in PSCs. Treatment of NiOx with the BTBT derivative significantly enhances the open-circuit voltage (Voc) and boosts the champion power conversion efficiency (PCE). In-depth analysis of the interface reveals that BTBT molecules reside at the bottom interface and successfully suppress a reaction at this interface, leading to improved stability of the PSCs under MPP conditions and in ambient conditions.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Liqiu Chu, Zhiyu Zhou, Zhipan Feng, Xinqi Zhao, Huimin Tan, Yu Chen
Summary: In this study, HTCC/Fe3O4/CdTe magnetic fluorescent nanoparticles (MFCNPs) that can be well dispersed in water were prepared via electrostatic interaction. The nanoparticles showed good biocompatibility and their properties were mainly influenced by the relative ratios of different components. The chitosan-based magnetic fluorescent composite may be a promising delivery carrier candidate.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Chemical
Qi Liu, Mingqing Zhang, Yijun Cao, Biao Peng, Joshua Bosco Barvor
Summary: In gold-processing plants, residual metal cyanide species such as zinc cyanide can remain in process water despite cyanide destruction. A study showed that using quaternary ammonium salts can effectively precipitate zinc cyanide complexes below a critical concentration, removing metal cyanide species from process water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Hai-long Zhang, Chang-e Yang, Jing Du, Jun-bo He, Wei-nong Zhang
Summary: This study explored the detoxification effect and mechanism of montmorillonite modified with quaternary ammonium salts (QAS) on zearalenone (ZEN) in corn oil. The results showed that the QAS-modified montmorillonite was an excellent adsorbent for removing ZEN from corn oil. The adsorption process of the modified montmorillonite on ZEN was mainly chemical adsorption. Additionally, the modified montmorillonite could improve the quality of corn oil.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qingye Song, Xinyu Zhou, Chenwei Xue, Zhi-Ang Zhang, Jinming Feng, Mengfan Ji, Limin Wang, Xu Liu, Jianwei Han
Summary: This article reports the development of structurally diversified surfactants with multifunctional performance, which have hydrazone linker and can trigger the release of various fragrances. The experiments show that these surfactants have excellent hydrophilicity and surface activity in water. In addition, they exhibit significant retention capacity for volatile aldehydes by the hydrolysis releasing performance of hydrazones. Moreover, these surfactants also exhibit good antibacterial performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Biochemistry & Molecular Biology
P. L. Padnya, O. S. Terenteva, A. A. Akhmedov, A. G. Iksanova, N. Shtyrlin, E. Nikitina, E. S. Krylova, Yu G. Shtyrlin, I. I. Stoikov
Summary: The study proposed and implemented the design of antibacterial and bactericidal agents based on quaternary ammonium compounds on thiacalixarene macrocyclic platform for the first time, showing high antibacterial effects against Gram-positive bacteria, with better efficacy in 1,3-alternate conformation. Additionally, these compounds demonstrated lower cytotoxicity compared to reference drugs in cell toxicity studies.
BIOORGANIC & MEDICINAL CHEMISTRY
(2021)
Article
Chemistry, Medicinal
Renata Odzak, Doris Crncevic, Antonio Sabljic, Ines Primozic, Matilda Sprung
Summary: Quaternary ammonium compounds (QACs) are highly effective antimicrobial agents, but their use is limited due to bacterial resistance and high toxicity. Recent studies have discovered that introducing the amide functional group into QAC structures creates soft variants that retain antimicrobial properties while allowing for fine-tuned activity regulation.
Article
Engineering, Chemical
Yang Xu, Huawen Peng, Hao Luo, Qi Zhang, Zhitian Liu, Qiang Zhao
Summary: A modified polyethyleneimine (PEI) nanofiltration membrane using bis-quaternary ammonium salt (QEDTP) has been designed, which shows improved water flux and Mg2+/Li+ selectivity while maintaining high MgCl2 rejections. This modified membrane exhibits stable nanofiltration performance and provides one of the best Mg2+/Li+ separation performance considering both flux and selectivity.
Article
Chemistry, Multidisciplinary
Saixing Tang, Zihao Zhao, Jinquan Chen, Tianjia Yang, Yunzhong Wang, Xiaohong Chen, Meng Lv, Wang Zhang Yuan
Summary: Unprecedented intrinsic fluorescence/phosphorescence dual emissions are reported from various quaternary ammonium salts (QASs), which can be finely regulated by changing multiple factors. This finding refreshes the understanding of QASs and provides inspiration for the fabrication of novel luminophores.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
K. Nikiforova, A. Gorbunova, E. Plotnikov, P. Postnikov, O. Guselnikova
Summary: Prefilled biomedical devices (PFD) are increasing in popularity in the pharmaceutical market due to their convenience in delivering accurate doses of protein drugs. Cyclic olefin copolymer (COC) is suggested as an alternative to fragile glass. The functionalization of COC with quaternary ammonium moieties (QAS) improves its surface properties, enhancing antibiofouling performance and stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Polymer Science
Alejandro Torres-Rodriguez, Luc Averous, Eric Pollet, Gerardo de Jesus Sosa-Santillan, Alejandro Zugasti-Cruz, Crystel Aleyvick Sierra-Rivera, Nancy Veronica Perez-Aguilar, Marco Antonio Garcia-Lobato, Ernesto Oyervides-Munoz
Summary: Three novel polyaspartate derivatives with antibacterial properties and low hemolytic effects were synthesized and tested, showing potential as antimicrobial agents.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Biotechnology & Applied Microbiology
Ewa Oblak, Bozena Futoma-Koloch, Anna Wieczynska
Summary: Quaternary ammonium salts (QASs) are widely distributed in nature and can be chemically synthesized, with diverse chemical structures and biological properties. They are extensively used in medicine, industry, and agriculture for their antimicrobial properties, which can also lead to microbial resistance to disinfectants and antibiotics.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2021)
