Article
Chemistry, Multidisciplinary
Yao Li, Qiu-Xu Zang, Xi-Yan Dong, Zhao-Yang Wang, Peng Luo, Xi-Ming Luo, Shuang-Quan Zang
Summary: This study successfully prepared and structurally resolved four types of Janus nanoclusters based on Au and transition metals using an S/P biligand strategy, revealing their structural features and electronic properties, providing a new approach for the synthesis of Janus nanoclusters.
ACS CENTRAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yao Li, Qiu-Xu Zang, Xi-Yan Dong, Zhao-Yang Wang, Peng Luo, Xi-Ming Luo, Shuang-Quan Zang
Summary: This study successfully synthesized atomically precise Janus nanoclusters and elucidated their structure and properties. The research revealed the interfacial linkage, superatomic orbital splitting, and unique electronic and optical properties of these nanoclusters. It provides fundamental knowledge for the study of intermetallic nanomaterials and offers a new avenue for the synthesis of Janus nanoclusters.
ACS CENTRAL SCIENCE
(2022)
Article
Chemistry, Physical
Kazeem O. Sulaiman, Robert W. J. Scott
Summary: Bimetallic atom-precise Ag24Pd1(SR)(18)(2-) clusters on carbon supports were synthesized and used as heterogeneous catalysts for hydrogenation reactions. The single Pd atom in the cluster structure was found to be accessible for the hydrogenation catalysis. The bimetallic Ag24Pd1(SR)(18)(2-) clusters exhibited better thermal stability and higher catalytic activity than homonuclear Ag-25(SR)(18)(-) clusters on carbon supports.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Xu Liu, Xiao Cai, Yan Zhu
Summary: Bimetallic nanocluster catalysts show potential in tailoring catalytic activity and selectivity. Constructing ideal bimetallic catalysts is challenging due to multiple factors convoluted in the overall catalytic performance. Recent research focuses on the synergistic effects of surface/subsurface heteroatoms and core heteroatoms, providing valuable insights into intraparticle synergism and guiding the development of high-performance catalysts for industrial applications.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Qiong Wu, Chengcheng Liu, Cheng Cui, Long Li, Lu Yang, Yuan Liu, Hoda Safari Yazd, Shujuan Xu, Xiang Li, Zhuo Chen, Weihong Tan
Summary: The research indicates that the absorption peaks of DNA-templated Ag nanoclusters are sensitive to the assembled distances and exhibit characteristics of plasmon coupling; TDDFT simulations suggest that the absorption originates from plasmons, and the consistent trend between experimental and simulation results implies the possibility of plasmon coupling. DNA-AgNCs have the potential to be promising materials for constructing plasmon-coupling devices with ultra-small size, site-specific and stoichiometric binding abilities, and biocompatibility.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Tianxiang Chen, Yong Wang, Qi Xue, Ching Kit Tommy Wun, Pui Kin So, Ka Fu Yung, Tai-Sing Wu, Yun-Liang Soo, Keita Taniya, Sarah Day, Chiu C. Tang, Zehao Li, Bolong Huang, Shik Chi Edman Tsang, Kwok-yin Wong, Tsz Woon Benedict Lo
Summary: This study successfully assembled supported multinuclear catalysts with controllable metal nuclearity and constituent composition in zeolites, utilizing the principles of coordination chemistry and solid-state chemistry. The observed synergistic effects in the catalytic performance of these catalysts have the potential to bridge the gap between homogeneous and heterogeneous catalysis.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Andrea Mussio, Maila Danielis, Nuria J. Divins, Jordi Llorca, Sara Colussi, Alessandro Trovarelli
Summary: Bimetallic Pt-Pd catalysts supported on ceria show improved performance in wet conditions, possibly due to the formation of unique mushroom-like structures resulting from the alloying of Pt and Pd. Catalyst prepared by milling Pd metal and ceria first, followed by the addition of Pt, exhibits better performance compared to conventional impregnated samples.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Xuemeng Jing, Fangyu Fu, Ruijie Wang, Xing Xin, Lin Qin, Hongjin Lv, Guo-Yu Yang
Summary: In this work, a pair of atomically precise enantiomers of silver clusters were synthesized, and their chirality was attributed to the asymmetric arrangement of surface ligands. These clusters could form two-dimensional assemblies, exhibiting excellent thermal stability and photocatalytic activity, providing possibilities for exploring catalysts based on fixed coinage clusters with attractive properties.
Review
Chemistry, Multidisciplinary
Koustav Sahoo, Indranath Chakraborty
Summary: Photoluminescence (PL) is an important property of metal nanoclusters (NCs) and their PL efficiency is lower compared to other nanomaterials. Ligands and core play key roles in the PL properties of gold NCs. This mini-review focuses on the ligands' effects on the PL properties of diverse silver NCs.
Article
Chemistry, Multidisciplinary
Walid Dachraoui, Maryna I. Bodnarchuk, Rolf Erni
Summary: In this study, the atomic mechanisms governing the formation of bimetallic Pt-Pd nanoparticles were tracked using in situ liquid cell scanning transmission electron microscopy. The formation process was found to be divided into three stages, ultimately leading to the formation of crystalline bimetallic alloys. Different coalescence processes resulted in nanoparticles with distinct shapes and defects.
Article
Nanoscience & Nanotechnology
Shameer Ahmed, Gunjan Baijal, Rudrappa Somashekar, Subramania Iyer, Vijayashree Nayak
Summary: Gold nanoparticles are emerging as promising radiosensitizers due to their high biocompatibility. Bimetallic nanoparticles, such as PEG-coated Au-Ag alloy nanoparticles, have shown enhanced anticancer activity compared to monometallic nanoparticles. These nanoparticles demonstrate potent in vitro radiosensitization and better CT contrast enhancement ability, suggesting their potential dual function as radiosensitizer and CT contrast agent against oral cancers.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2021)
Article
Chemistry, Multidisciplinary
Amrita Chakraborty, Megha Maria Stanley, Biswajit Mondal, Nonappa, Mohammad Bodiuzzaman, Papri Chakraborty, M. P. Kannan, Thalappil Pradeep
Summary: Quantized energy levels and unique optoelectronic properties of atomically precise noble metal nanoclusters have made them important in various fields. Recent studies have shown that these nanoclusters can either participate in colloidal assembly or lead to products with atom exchange depending on the reactant. Furthermore, anisotropic plasmonic nanoparticles with sharp edges and protrusions exhibit higher chemical reactivity and can induce site-specific growth of foreign metals and metal oxide shells.
Article
Chemistry, Multidisciplinary
Wei-Miao He, Zhe Zhou, Zhen Han, Si Li, Zhan Zhou, Lu-Fang Ma, Shuang-Quan Zang
Summary: The study successfully prepared high-nuclearity silver(I) clusters Ag-18 and Ag-62, and developed a highly sensitive H2S gas sensor based on their transformation, providing insights into the growth of metal clusters and their luminescent sensing applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Anna Pniakowska, Krishnadas Kumaranchira Ramankutty, Patryk Obstarczyk, Martina Peric Bakulic, Zeljka Sanader Marsic, Vlasta Bonacic-Koutecky, Thomas Burgi, Joanna Olesiak-Banska
Summary: This study reports the impact of gold atom doping on the optical properties of silver nanoclusters, revealing that the presence of gold dopants can enhance the photoluminescence quantum yield and two-photon brightness of the nanoclusters.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Turbasu Sengupta, Dinesh Bista, Shiv N. Khanna
Summary: The doping of a Pd cluster with Ag atoms enhances the efficiency of Suzuki-Miyaura cross-coupling reactions by reducing the barriers for oxidation and reduction steps. The Ag atom adjacent to Pd sites in a Pd12Ag cluster donates charge to lower the barriers, demonstrating a unique donor-acceptor characteristic between Ag and Pd atoms. This study shows that altering the active site atom can control the activation energies of redox steps, suggesting the potential of silver-doped Pd-n clusters as catalysts.
Article
Chemistry, Analytical
Asmita Poudel, George Gachumi, Randy Purves, Ildiko Badea, Anas El-Aneed
Summary: The new LC-MS/MS method allows for quantitative and qualitative analysis of phytosterol oxidation products, providing a rapid and accurate way to analyze the content and structure of 16 POPs in different phytosterols, applicable to various sources of phytosterols. The addition of tocopherols significantly increases the stability of phytosterols in liposomal formulations.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Applied
V. Sudheeshkumar, Miranda Lavier, Brianna Lukan, Jing Shen, Natalia Semagina, Robert W. J. Scott
Summary: A method for preparing Pd clusters for catalytic methane combustion was studied, and it was found that the encapsulation of the clusters in a silica matrix improves their stability and catalytic activity.
Article
Agriculture, Multidisciplinary
Randy W. Purves, Kim Souster, Michelle West, Azhar M. Huda, Caleb M. E. Fisher, Michael W. Belford, Bryn O. Shurmer
Summary: Thyreostatic drugs are illegally used in animals for food production, leading to lower quality meat and potential adverse effects on humans. Detecting these drugs in animal tissues can be challenging due to their low-molecular-weight properties. The study proposes an improved LC-FAIMS-SRM method, which combines liquid chromatography with high-field asymmetric waveform ion mobility spectrometry and selective reaction monitoring. This method demonstrates significant improvements in signal-to-noise ratio and lower limit of quantification compared to the traditional LC-SRM method.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Physical
Sanil E. Sivan, Ki Hyuk Kang, Seung Ju Han, Odongo Francis Ngome Okello, Si-Young Choi, Veeranmaril Sudheeshkumar, Robert W. J. Scott, Ho-Jeong Chae, Sunyoung Park, U-Hwang Lee
Summary: This study investigates the effects of Ru structure on the properties and catalytic activities of Ru-CeO2 systems for NH3 production. The results show that Ru nanoclusters and single atoms exhibit superior and more stable performances compared to Ru nanoparticles.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Maryam Alyari, Robert W. J. Scott
Summary: The synthesis of Au cluster-cored dendrimers, both by direct synthesis and multi-step functionalization pathways, has been described in this study. It was found that the directly synthesized cluster-cored dendrimers had larger core sizes and higher catalytic activities compared to those formed by the divergent approach. However, the divergently synthesized dendrimers exhibited better stability and smaller core sizes.
Article
Agronomy
Shaoming Huang, Haixia Zhang, Randy W. W. Purves, Rosalind Bueckert, Bunyamin Tar'an, Thomas D. D. Warkentin
Summary: In this study, the relationship between heat tolerance and the regulation of HSP and ABA hormones was investigated in Canadian pea varieties. The transcription of HSP genes and the accumulation of ABA were upregulated under heat stress. Heat-tolerant varieties showed higher ABA synthesis and turnover rate at 3 hours of heat stress.
Article
Chemistry, Physical
Kazeem O. Sulaiman, Andrew Bueckert, Ahmed Abdellah, Sudheesh Kumar Veeranmaril, Drew C. Higgins, Robert W. J. Scott
Summary: This study explores the application of atom-precise Ag clusters as templates for the design of AgPd bimetallic catalysts using a sequential deposition approach. The research reveals that at low Pd loadings, Ag atoms are predominantly on the catalyst surface while Pd atoms occupy subsurface sites, whereas at higher Pd loadings, most Pd atoms occupy surface sites. These structural changes play a significant role in the selective hydrogenation reaction.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Parasitology
Vladislav A. Lobanov, Kelly A. Konecsni, Randy W. Purves, W. Brad Scandrett
Summary: This study developed a recombinant protein of Trichinella spiralis serpin using recombinant technology and applied it in indirect ELISA for detecting exposure to Trichinella in pigs. The Serpin ELISA showed high specificity and sensitivity in commercial pig herds, but lower sensitivity for detecting antibodies induced by experimental infections of pigs with sylvatic Trichinella species.
VETERINARY PARASITOLOGY
(2022)
Article
Chemistry, Applied
Darshika Pathiraja, Janitha P. D. Wanasundara, Fatma M. Elessawy, Randy W. Purves, Albert Vandenberg, Phyllis J. Shand
Summary: This study investigated the water-soluble phenolic compounds and antioxidant activities of lentils with normal-tannin and low-tannin seed coats. The results showed significant variations in total phenolic content among different genotypes, ranging from 1519 to 6502 μg/g. The antioxidant activities were 6-9 times higher in normal-tannin lentils than in low-tannin lentils, indicating the presence of water-extractable natural phenolic compounds with promising antioxidant potential.
Article
Chemistry, Applied
Haixia Zhang, Randy W. Purves, Thomas D. Warkentin, Albert Vandenberg
Summary: Faba bean seeds are a rich source of proteins and levodopa, but the presence of vicine and convicine limits its consumption. A quantification method using FAIMS and QqQ was previously reported, and a similar method with commercial instruments was developed. Both methods provided accurate measurements and recovery, but the commercial method had a lower limit of quantification and a wider linear range. The results showed that levodopa levels in faba bean were genotype dependent, but not directly correlated with vicine or convicine levels.
Article
Agriculture, Multidisciplinary
Fatma M. Elessawy, Derek Wright, Albert Vandenberg, Anas El-Aneed, Randy W. Purves
Summary: Using mass spectrometry-based untargeted metabolomics, this study found that patterned green lentil seed coats contained 28 significantly upregulated polyphenolic metabolites, 19 of which were identified as flavones. Non-patterned green lentil seed coats had almost no flavones, indicating a blockage in their flavone biosynthetic pathway. Although the black pattern is not easily discernible, black seed coats also contained similar flavones as those found in green marbled seed coats, suggesting a marbled pattern on black seed coats.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Plant Sciences
Stanley Adobor, Sabine Banniza, Albert Vandenberg, Randy W. Purves
Summary: Stemphylium botryosum alters lentil secondary metabolism and has different effects on resistant and susceptible genotypes. Untargeted metabolomics identifies metabolites and biosynthetic pathways that play a crucial role in resistance to S. botryosum. This research contributes to understanding the regulation and reprogramming of lentil metabolism under biotic stress and provides potential targets for breeding enhanced disease resistance.
Article
Endocrinology & Metabolism
Fatma M. M. Elessawy, Jessa Hughes, Hamid Khazaei, Albert Vandenberg, Anas El-Aneed, Randy W. W. Purves
Summary: The study aims to explore the polyphenol diversity and differences in standard and wing petals of faba bean flowers, and identify glycosylated flavonoids that contribute to flower color. It was found that the color variation between the faba bean flowers is mainly controlled by anthocyanins in brown, red, and purple-red flowers, while other flavonoids have different levels of influence in different flower color groups, especially in mixed colors.
Article
Agronomy
Winda Puspitasari, Bjoern Allemann, Deepti Angra, Helen Appleyard, Wolfgang Ecke, Christian Moellers, Tanja Nolte, Randy W. Purves, Carsten Renner, Thomas Robertson-Shersby-Harvie, Rebecca Tacke, Alex Windhorst, Sonja Yaman, Wolfgang Link
Summary: This study applied GWAS to antinutritive compounds in winter faba bean and predicted data for different inbred lines using NIRS technology. It found high heritability for V and V + C, lower for C, and identified several SNPs significantly associated with V and V + C.
JOURNAL FUR KULTURPFLANZEN
(2022)
Article
Chemistry, Physical
Kazeem O. Sulaiman, Muhammad Zubair, Graham King, Nicholas M. Bedford, Robert W. J. Scott
Summary: This study investigates the structural changes of Au-25 and Ag-25 clusters on alumina supports during thermal activation using dPDF analysis, revealing significantly different behaviors between the two metal clusters upon thermal activation and emphasizing the importance of developing distinct activation protocols for different metal cluster systems.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)