Article
Chemistry, Analytical
Szabolcs Fekete, Mathew DeLano, Andrew Bates Harrison, Stephen J. Shiner, Jonathan Leon Belanger, Kevin D. Wyndham, Matthew A. Lauber
Summary: In order to address the challenges in analyzing certain biomolecules using liquid chromatography, researchers have developed a new hydrophilically modified hybrid surface (h-HST) for size exclusion chromatography and anion exchange separations. By incorporating additional oxygen and carbon atoms onto an ethylene bridge hybrid siloxane polymer, this surface reduces non-specific adsorption and undesired secondary interactions, resulting in improved separations of proteins and nucleic acids.
ANALYTICAL CHEMISTRY
(2022)
Article
Biochemical Research Methods
Bingchuan Wei, Jenny Wang, Lulu Dai, Bifan Chen, Kelly Zhang
Summary: This study developed a method for analyzing sgRNA and demonstrated the potential of HILIC-MS for analyzing large oligonucleotides.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Physical
Michael J. Cowan, Anantha Venkataraman Nagarajan, Giannis Mpourmpakis
Summary: This study introduces novel structure-property relationships to predict the electronic properties of AgAu TPNCs, opening avenues for high throughput screening of bimetallic TPNCs.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Medicine, Research & Experimental
Rudolf Andrys, Aneta Klusonova, Miroslav Lisa, Jiri Kassa, Jana Zd'arova Karasova
Summary: Oxime-based molecules are used to reactivate AChE function in patients with organophosphate intoxication, but their efficacy is limited by low brain penetration. In this study, the use of cucurbit[7]uril (CB[7]) as a carrier for the clinical agent asoxime significantly enhanced its bioavailability in the brain. Pharmacokinetic analysis showed over a 3-fold increase in brain activity when asoxime was administered as a complex with CB[7] compared to alone.
MOLECULAR PHARMACEUTICS
(2021)
Article
Chemistry, Analytical
Michaela Chocholouskova, Denise Wolrab, Robert Jirasko, Hana Studentova, Bohuslav Melichar, Michal Holcapek
Summary: This study systematically investigates the effects of different lipid class separation methods and mass spectrometers on quantitative lipidomic data, finding slight variations in molar concentrations even within the same laboratory using different platforms. Normalization to a reference sample can significantly reduce these differences, leading to highly homogenous molar concentrations of individual lipid species. This strategy suggests a potential approach for reporting comparable quantitative results regardless of the analytical platform and mass spectrometer used.
Article
Chemistry, Multidisciplinary
Papri Chakraborty, Sami Malola, Marco Neumaier, Patrick Weis, Hannu Hakkinen, Manfred M. Kappes
Summary: The fragmentation dynamics of ligated coinage metal clusters provides insights into their structural and bonding properties. However, the challenges in methodology have limited the investigation of fragment structures. In this study, we used trapped ion mobility mass spectrometry to determine the geometric structures of the primary fragments of [Ag29L12](3-) and compared them to density functional theory calculations. We also observed a new dissociation channel in the further dissociation of [Ag19L6](-), indicating a competition between retaining electronic stability and increasing steric strain of ligands and staples. These findings have potential implications for studying the catalytic behavior of Ag clusters on supports through soft-landing deposition.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Quanshou Feng, Zehu Xie, Hongze Liang, Chuan-Fan Ding, Yinghua Yan
Summary: Ovalbumin is a significant protein source, but the safety concerns of protein allergy and contamination have increased. Hence, it is necessary to detect proteins efficiently and rapidly. Mass spectrometry is a powerful tool used in protein detection. In this study, COF@S-S@GC was prepared and showed sensitive detection, good selectivity, high adsorption capacity, stability, reproducibility, linearity, LOQ level, and recovery ratio for ovalbumin. Furthermore, COF@S-S@GC also demonstrated satisfactory purification ability for protein enrichment from complex samples, indicating its great potential in protein analysis.
Article
Biochemical Research Methods
Johannes B. Mueller-Reif, Fynn M. Hansen, Lisa Schweizer, Peter Treit, Philipp E. Geyer, Matthias Mann
Summary: Reversed-phase HPLC is commonly used in MS-based proteomics for peptide separation, with particle-packed capillary columns being predominantly used in nanoflow HPLC systems. Despite capillary columns being a standard for many years, they are expensive and have short lifetimes, leading many laboratories to produce their own in-house packed columns.
MOLECULAR & CELLULAR PROTEOMICS
(2021)
Article
Agriculture, Dairy & Animal Science
Michele Faccia, Giuseppe Natrella, Giuseppe Gambacorta, Antonio Trani
Summary: The study evaluated the effect of ripening cheese in a traditional cellar without artificial temperature control on the chemical, microbiological, and sensory characteristics of Protected Geographical Indication Canestrato di Moliterno cheese. The nonconventional ripening environment resulted in differences in microbial counts, accelerated maturation, and unique sensory features in the cheese products. The study also found significant qualitative differences in free fatty acid profiles and sensory characteristics between cheese ripened in the natural cellar and controlled maturation room.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Biochemical Research Methods
Majidah Alsaeedi, Huda Alghamdi, Phyllis Hayes, Anna M. Hogan, Elizabeth S. Gilchrist, Kirsten G. Dowling, Jane A. English, Jeremy D. Glennon
Summary: Nickel (Ni) is a trace heavy metal with documented allergy and carcinogenic effects in humans. Understanding the coordination mechanisms and labile complex species of Ni(II) is crucial for understanding its biological effects. Histidine (His) is an essential amino acid that contributes to protein structure and coordination of Ni(II) ions. This study evaluated different chromatographic columns for the separation of Ni(II)-Histidine species, and the Zic-cHILIC column showed high efficiency and selectivity. The identities of the Ni(II)-Histidine species were confirmed using HILIC-ESI-MS.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Analytical
Rui Guo, Qisheng Zhong, Jiaqi Liu, Peiming Bai, Zongpeng Wang, Jieling Kou, Peijie Chen, Jie Zhang, Bo Zhang
Summary: In this study, a method called 2D-LC/TQMS was developed for simultaneous analysis of hydrophilic and hydrophobic metabolites using the combination of HILIC and RPLC. The method can detect 417 metabolites involved in various metabolic pathways with good reproducibility, linearity, and wide linear range. It was tested using different biological samples and applied to a bladder cancer case/control study, identifying 30 differential metabolites related to carbohydrate and amino acid metabolism.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Donghoon Lee, Yohei Ishida, Tetsu Yonezawa
Summary: Controlled ligand exchange can be used to tailor the properties of Au-25(4-PyET-CH3(+))(x)(4-PyET)(18-x) clusters by choosing appropriate counterions to promote cationic-to-cationic or neutral-to-cationic ligand exchange.
Article
Biochemical Research Methods
Ming Huang, Xiaobin Xu, Haibo Qiu, Ning Li
Summary: In this study, a generic HILIC-MS/MS method was developed for in-depth characterization of nucleic acid therapeutic modalities. High-resolution mass spectrometry was used to determine the deconvoluted masses of oligonucleotide and siRNA standards and their impurities. Optimized higher-energy C-trap dissociation was used to improve the sequence coverage of DNA and RNA oligonucleotides, achieving higher on-column sensitivity for phosphorothioate oligonucleotide analysis.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Analytical
Dun-Jian Wang, Da-Wei Wang, Qiu-Chen Fang, Ye Shen, Nv-Jin Zeng, Yan-Ling Yang, Hong-Wen Zhang, Yong-Qing Wang, Lu-Ning Sun
Summary: A simple, fast, and sensitive tandem mass spectrometry method was established to detect the concentration of regadenoson in human plasma, which was used to study the pharmacokinetic characteristics of regadenoson in healthy Chinese subjects. The method showed linear calibration curve, low precision, high accuracy, and no matrix effect for regadenoson or regadenoson-d3.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Chemistry, Analytical
Stefano Dugheri, Nicola Mucci, Donato Squillaci, Elisabetta Bucaletti, Giovanni Cappelli, Lucia Trevisani, Cecile Valsecchi, Viviana Consonni, Fabio Gosetti, Davide Ballabio, Giulio Arcangeli
Summary: Antineoplastic drugs, known for their severe toxic effects, require sensitive monitoring methods to address surface contaminations within preparation and administration units. An orthogonal normal phase analysis method has been developed to complement the limitations of the more common reversed-phase methods, and has shown promise in reliable relationship evaluation between chromatographic retention and chemical-structural features of the drugs under analysis.
Article
Chemistry, Multidisciplinary
Yu Zhao, Saikat Das, Taishu Sekine, Haruna Mabuchi, Tsukasa Irie, Jin Sakai, Dan Wen, Weidong Zhu, Teng Ben, Yuichi Negishi
Summary: The unique structural characteristics of three-dimensional (3D) covalent organic frameworks (COFs) make them promising platforms for various functional applications. In this study, we successfully designed and synthesized a 3D non-interpenetrated stp net COF named TUS-64 with the largest pore size and record-low density. TUS-64 exhibits high stability and a highly interconnected mesoporous structure, enabling efficient drug loading and controlled release in a simulated body fluid environment.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Abdulrahman S. Alotabi, Thomas D. Small, Yanting Yin, D. J. Osborn, Shuhei Ozaki, Yuki Kataoka, Yuichi Negishi, Kazunari Domen, Gregory F. Metha, Gunther G. Andersson
Summary: The stability, oxidation state, and electronic structure of Cr-oxide photodeposited onto P25, BaLa4Ti4O15, and Al:SrTiO3 particles during annealing process were investigated. The diffusion of Cr2O3 into different phases and the reduction of Cr2O3 to metallic Cr were observed after annealing. The effects of Cr2O3 formation and diffusion on the surface and bulk band gaps were analyzed using various techniques. The implications of Cr2O3 stability and diffusion for photocatalytic water splitting were discussed.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Materials Science, Multidisciplinary
Yusuke Horita, Mai Ishimi, Yuichi Negishi
Summary: Metal nanoclusters (NCs), especially anion-templated Ag NCs, are of great interest in nanoscale materials research due to their size-specific physicochemical properties. The synthesis methods and influences of central anions on the geometric structure of anion-templated Ag NCs, including halide ions, chalcogenide ions, oxoanions, polyoxometalate, or hydride/deuteride, are summarized in this review. This summary serves as a reference for the current status of anion-templated Ag NCs, and may contribute to the development of novel geometric structures and physicochemical properties.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Daichi Yazaki, Tokuhisa Kawawaki, Daisuke Hirayama, Masanobu Kawachi, Kosaku Kato, Sota Oguchi, Yuichi Yamaguchi, Soichi Kikkawa, Yoshiya Ueki, Sakiat Hossain, D. J. Osborn, Fumihiko Ozaki, Shunsuke Tanaka, Jun Yoshinobu, Gregory F. Metha, Seiji Yamazoe, Akihiko Kudo, Akira Yamakata, Yuichi Negishi
Summary: For the realization of a next-generation energy society, further improvement in the activity of water-splitting photocatalysts is essential. The study developed a method to load ultrafine, monodisperse, metallic Pt nanoclusters on graphitic carbon nitride, a promising visible-light-driven photocatalyst. The method significantly improved the hydrogen-evolution activity per loading weight of Pt cocatalyst, and also enhanced the overall water-splitting activity of other advanced photocatalysts.
Review
Chemistry, Inorganic & Nuclear
Sourav Biswas, Saikat Das, Yuichi Negishi
Summary: Atomically-precise noble metal nanoclusters with distinct structural, optical, and electronic properties have been widely studied for various applications. Thiolate-protected silver nanoclusters (Ag NCs) have shown great potential in sensing, bioimaging, and photovoltaics, but are limited by their susceptibility to oxidation. Reticular chemistry has provided a solution through the formation of silver cluster-assembled materials (SCAMs) that combine Ag NCs with organic linkers, resulting in enhanced catalytic activity and structural stability. This review discusses recent developments in the synthesis of Ag(I)-thiolate NCs, size control, stability, optical properties, and the synergistic interactions between Ag NCs and organic linkers in SCAMs, as well as the challenges and opportunities in functional devices and applications.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Kai Sun, Yujun Fu, Taishu Sekine, Haruna Mabuchi, Sakiat Hossain, Qiang Zhang, Dequan Liu, Saikat Das, Deyan He, Yuichi Negishi
Summary: Atomically precise metal nanoclusters are a novel and functional class of nanomaterials with high designability and unique structures and chemistry. This study harnesses a metal nanocluster as an efficient electrocatalyst for the anchoring and conversion of lithium polysulfides in lithium-sulfur batteries. The results show promising reversible capacity and rate performance, indicating the potential application of metal nanoclusters as optimal electrocatalysts for sustainable energy storage systems.
Article
Chemistry, Multidisciplinary
Sourav Biswas, Sakiat Hossian, Taiga Kosaka, Jin Sakai, Daichi Arima, Yoshiki Niihori, Masaaki Mitsui, De-en Jiang, Saikat Das, Song Wang, Yuichi Negishi
Summary: This article discusses the challenges of synthesizing highly symmetric Cu(I)-thiolate nanoclusters and presents a nested Keplerian architecture of [Cu58H20(SPr)(36)(PPh3)(8)](2+) (Pr = CH2CH2CH3). The structure consists of five concentric polyhedra of Cu(I) atoms, providing enough space to accommodate five ligand shells within a range of 2 nm. This intriguing structural architecture is also correlated with the unique photoluminescence properties of the nanoclusters.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Jin Sakai, Sourav Biswas, Tsukasa Irie, Haruna Mabuchi, Taishu Sekine, Yoshiki Niihori, Saikat Das, Yuichi Negishi
Summary: Silver cluster-assembled materials (SCAMs) with molecular-level designability and unique photophysical properties have limited application scope due to their dissimilar structural architecture in different solvent media. In this study, two unprecedented luminescent SCAMs (TUS 1 and TUS 2) were synthesized, composed of an Ag-12 cluster core connected by quadridentate pyridine linkers. These materials exhibit exceptional fluorescence properties with high absolute quantum yield (QY) and excellent chemical stability in a wide range of solvent polarity. A highly sensitive assay for detecting Fe3+ in aqueous medium was developed, with promising detection limits comparable to the standard. The potential application of these materials in environmental monitoring and assessment was demonstrated through the detection of Fe3+ in real water samples.
Article
Chemistry, Multidisciplinary
Tokuhisa Kawawaki, Yusuke Mitomi, Naoki Nishi, Ryuki Kurosaki, Kazutaka Oiwa, Tomoya Tanaka, Hinoki Hirase, Sayuri Miyajima, Yoshiki Niihori, D. J. Osborn, Takanori Koitaya, Gregory F. Metha, Toshihiko Yokoyama, Kenji Iida, Yuichi Negishi
Summary: We have recently discovered [Pt-17(CO)(12)(PPh3)(8)](z) (Pt = platinum; CO = carbon monoxide; PPh3 = triphenylphosphine; z = 1+ or 2+) as a Pt nanocluster that can be synthesized with atomic precision in air. Our study demonstrates the preparation of a Pt-17-supported carbon black (CB) catalyst (Pt-17/CB) with 2.1 times higher oxygen reduction reaction (ORR) activity than commercial Pt nanoparticles/CB. This achievement is attributed to the appropriate electronic structure of the surface Pt atoms of Pt-17/CB, as suggested by density functional theory calculation.
Article
Chemistry, Multidisciplinary
Sota Funaki, Tokuhisa Kawawaki, Tomoshige Okada, Kana Takemae, Sakiat Hossain, Yoshiki Niihori, Takumi Naito, Makito Takagi, Tomomi Shimazaki, Soichi Kikkawa, Seiji Yamazoe, Masanori Tachikawa, Yuichi Negishi
Summary: The geometric/electronic structure of tiara-like metal nanoclusters [Ni-n(PET)(2n); n = 4, 5, 6, where PET refers to phenylethanethiolate] with the same SR ligand was evaluated. The geometric structure of Ni-5(SR)(10) was determined for the first time using single-crystal X-ray diffraction. Additionally, combined electrochemical measurements and X-ray absorption fine structure measurements revealed that Ni-5(SR)(10) easily forms an OER intermediate and therefore exhibits a high specific activity.
Review
Chemistry, Physical
Sourav Biswas, Saikat Das, Yuichi Negishi
Summary: This Minireview provides a comprehensive coverage of the optimal design strategies and controlled synthesis of copper nanoclusters (Cu NCs) as catalysts. It discusses the tuning of active sites at the atomic level, the influence of cluster size, shape, structure, ligands and heteroatom doping on catalytic activity, and various catalytic applications ranging from chemical catalysis to emerging photocatalysis and electrocatalysis.
NANOSCALE HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Riki Nakatani, Sourav Biswas, Tsukasa Irie, Jin Sakai, Daisuke Hirayama, Tokuhisa Kawawaki, Yoshiki Niihori, Saikat Das, Yuichi Negishi
Summary: Silver cluster-assembled materials (SCAMs) have attracted significant interest due to their precise atomic structures, fascinating chemical/physical properties, and remarkable luminescent capabilities. The choice of linker molecules plays a crucial role in determining the structural characteristics and unique properties of SCAMs. By reticulating C-6-symmetric Ag-12 cluster cores with C-3-symmetric tripodal pyridine linkers, a SCAM with an intriguing (3,6)-connected kgd topology has been synthesized.
Review
Chemistry, Inorganic & Nuclear
Tokuhisa Kawawaki, Yuichi Negishi
Summary: This review summarizes the basic knowledge of metal nanoclusters and their application using electrochemical methods. Metal nanoclusters are a type of material with unique properties, but there is still room for improvement in terms of evaluation and application methods.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Multidisciplinary
Sakiat Hossain, Daisuke Hirayama, Ayaka Ikeda, Mai Ishimi, Sota Funaki, Arpan Samanta, Tokuhisa Kawawaki, Yuichi Negishi
Summary: Thiolate-protected gold nanoclusters are a rare type of material that exhibit multiple physicochemical properties, making them suitable for various applications. Recent research has greatly improved our understanding of the structure and properties of these nanoclusters, allowing us to fine-tune their characteristics and accelerate the fabrication of highly functional materials.
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
