Article
Chemistry, Physical
Zachary A. Christensen, Adam C. Pearcy, Kyle A. Mason, M. Samy El-Shall
Summary: The gas-phase sequential association of methanol onto protonated benzonitrile and the proton-bound dimer has been studied experimentally and computationally. The results show that these reactions can form stable structures, which are important for the formation of complex organics on the surface of ice grains.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Chemistry, Physical
Enshan Liu, Tao Liang, Elena Ushakova, Bingzhe Wang, Bohan Zhang, Huiqun Zhou, Guichuan Xing, Chunming Wang, Zikang Tang, Songnan Qu, Andrey L. Rogach
Summary: Enhancing the absorption and emission of carbon dots in the deep-red/near-infrared range by suppressing nonradiative charge recombination via deprotonation of the CD surface allows for multilevel data encryption in the NIR region through humidity and temperature control on CD-ink stamped paper.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Engineering, Chemical
Rujie Yang, Yan Fan, Risheng Yu, Fangfang Dai, Jian Lan, Zhikun Wang, Junlang Chen, Liang Chen
Summary: In this study, robust K+-crosslinked reduced GO membranes were developed for treating wastewater containing multivalent heavy metal ions, showing high water permeance and excellent aqueous stability. The improved permeability was attributed to cation-pi interactions between K+ and rGO sheets, enhancing membrane stability and potential for industrial membrane separation applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Padmini Sahoo, Purva Chibde, Satyabrata Das, Subhrashis Banerjee, Bhupendra P. Mali, Kumar Vanka, Rajesh G. Gonnade, Cem. B. Yildiz, Moumita Majumdar
Summary: A zwitterionic tetrastanna(II) cycle 1 with a crown ether-like topology was obtained from the deprotonation of 1,1'-methylenediimidazole (B) with Sn[N(SiMe3)(2)](2) (A). It consists of two stannate(II) and two stannyliumylidene ion pairs in alternating positions of the heterocycle. Despite greater nucleophilicity at the proximally located stannate(II) centers, the tetrastanna(II) cycle 1 is poorly reactive due to intramolecular donor-acceptor interactions involving Sn-II lone pair electrons. On the other hand, the deprotonation reaction between A and N-(diisopropylphenyl)imidazole (C) led to the formation of a stannylene 2, which is a dimer with coordination between the unsubstituted ring nitrogen atom and the other stannylene center.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Geosciences, Multidisciplinary
Mumuni Amadu, Adango Miadonye
Summary: This study demonstrates the preservation of predetermined wettability states in the carbon dioxide-brine-rock and oil-water-rock systems during core flooding. The research used published data and developed a petrophysical model for contact angle calculation.
NATURAL RESOURCES RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Qiang Shen, Xinting Wu, Qinqin Wei, Jian Zhang, Junjun Xu, Xiao Wang, Guoqiang Luo
Summary: Novel Nb2Mo0.5W0.5Cx eutectic niobium alloys are developed, which consist of body-centered cubic solid solution and carbide phases. By optimizing the composition, a Nb2Mo0.5W0.5C0.25 niobium alloy with high strength and good plasticity is achieved. This study offers a strategy for designing high-performance refractory alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Junmo Jeon, Young-Kwan Kim
Summary: Graphene oxide is functionalized with ethylenediaminetetraacetic acid to improve its dispersibility and enhance mechanical properties. The functionalized graphene oxide shows a distinct structure and has a nematic liquid-crystalline phase. Ionic cross-linking with divalent cations further enhances the mechanical properties. This study suggests that ethylenediaminetetraacetic acid functionalization improves the potential of graphene oxide derivatives as a high-performance structural material.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yaoda Liu, Ya Chen, Yahui Tian, Thangavel Sakthivel, Hang Liu, Shengwu Guo, Haibo Zeng, Zhengfei Dai
Summary: This study presents a method to enhance the efficiency of water electrolysis by using a MoS2/NiPS3 heterostructure catalyst. The driving force of hydrogen spillover (HSo) is clarified as the internal polarization field (IPF), which can also facilitate hydroxyl diffusion in the deprotonated oxygen evolution reaction (OER). The MoS2/NiPS3 heterostructure exhibits high HER and OER activity and can achieve stable overall water splitting.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Qianling Chen, Bin Chen, Songhua Xiao, Jiansong Feng, Jing Yang, Quan Yue, Xu Zhang, Taihong Wang
Summary: This study demonstrates an ionic thermoelectric material based on poly(vinyl alcohol) hydrogel, utilizing the differential transport of H+ in the hydrogel to achieve high ionic thermopower. This material opens up a new pathway for thermoelectric conversion devices using H+ as an energy carrier.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Jun-Ying Feng, Yuan-Pern Lee, Henryk A. Witek, Takayuki Ebata
Summary: The structures and reactions of pyridine cluster cations generated at specific ionization energy were investigated using infrared action spectroscopy. Proton and deuteron migration during formation and dissociation of the cluster cations were observed, with reactions involving alpha-distonic cation intermediates and proton migration pathways, respectively. Infrared spectra indicated that the clusters consist of a core covalently bound with additional pyridines via hydrogen bonds and/or weak dispersive interactions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Lewis Caiger, Conar Sinton, Timothee Constantin, James J. Douglas, Nadeem S. Sheikh, Fabio Julia, Daniele Leonori
Summary: In this study, a method for hydroxymethylation using formaldehyde as a C1 synthon is achieved through photocatalysis and a phosphine additive. By leveraging halogen-atom transfer and capturing the O-radical, the addition reaction to formaldehyde is rendered irreversible, leading to improved efficiency and yield of the reaction.
Article
Biophysics
Ying Yang, Sanjun Fan, James A. Webb, Yuanqing Ma, Jesse Goyette, Xueqian Chen, Katharina Gaus, Richard D. Tilley, Justin Gooding
Summary: This study presents an electrochemical approach to reversible fluorescence switching of enhanced green fluorescent proteins (EGFP) on indium tin oxide coated glass. The method allows efficient switching between bright (ON) and dim (OFF) states at the single molecule level. The electrochemical fluorescence switching is fast, reversible, and can be incorporated into advanced fluorescence microscopy.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Applied
Alabati Aireken, Akram Yasin, Bin Hao, Peng-Cheng Ma
Summary: Polyethylene terephthalate (PET) is widely used due to its excellent mechanical and thermodynamic properties, but most coatings on PET have poor fastness and environmental pollution. In this study, a strong adhesive waterborne polyurethane (PU) coating was designed on PET fabric for oil/water separation. The introduction of bis (2-hydroxyethyl) dimethylammonium chloride (BDAC) as a cationic group resulted in a strong adhesion of PU coating on PET fabric, and the coating showed durability and excellent ability for oil/water separation.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Dongpeng Zhang, Yanxiao Li, Pengfei Wang, Jinyong Qu, Sihui Zhan, Yi Li
Summary: This study successfully activated molecular oxygen (O-2) for water purification by using cationic defect-rich Bi4Ti3O12 (BTO-MV2) catalysts. The V-Ti on BTO nanosheets induced electron spin polarization, increasing the number of spin-down photogenerated electrons and reducing electron-hole pair recombination. The active surface V-Ti served as a center for adsorbing O2 and extracting electrons, effectively generating (OH)-O-circle, O-2 (circle-), and O-1(2). The degradation rate constant of tetracycline achieved by BTO-MV2 was 3.3 times faster than BTO, indicating promising practical applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Shripad Patil, Krishna Prasad Koirala, Matthew J. Crafton, Guang Yang, Wan-Yu Tsai, Bryan D. McCloskey, Chongmin Wang, Jagjit Nanda, Ethan C. Self
Summary: Cobalt-free cation-disordered rocksalt (DRX) cathodes are a promising class of materials for next-generation Li-ion batteries. This study investigates how the carbon microstructure and loading influence the performance of DRX cathodes. Results show that electrodes with a uniform graphitic coating on DRX particles and homogeneous dispersion of the active material and carbon exhibit superior cycling performance and rate capability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
