Article
Chemistry, Physical
Alberto Gonzalez-Fernandez, Chiara Pischetola, Fernando Cardenas-Lizana
Summary: The study investigated the continuous gas-phase hydrogenation of 3-butyn-2-ol over different catalysts, with Pd-Ni/Al2O3 demonstrating higher catalytic activity and selectivity, enriched with a palladium surface in the bimetallic Pd-Ni formation. The catalytic response of Pd/Al2O3 and Pd/Al2O3 + Ni/Al2O3 is controlled by the palladium component, while Ni/Al2O3 promotes the hydrogenation of the -C C- group.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Yatao Su, Xiu Wang, Qianwen Lin, Qi Shen, Shuangwen Xu, Liping Fang, Xin Wen
Summary: A nickel-based catalytic system combining NiCl2 center dot 6H(2)O, sodium borohydride and mercapto-beta-cyclodextrin (CD-SH) has been developed for the semi-hydrogenation of alkynes to E-alkenes, exhibiting high efficiency and good E-selectivity at room temperature. The system's high efficiency is attributed to the active H delta- (NaBH4), H delta+ (methanol), and in situ formed Ni nanoparticles, as well as the host-guest interaction between CD-SH and Z-alkene intermediate. Kinetic and mechanistic studies reveal that the E-alkene is obtained through efficient Z-selective semi-hydrogenation followed by sulfur-radical mediated Z-to-E isomerization. This study offers a cheaper, efficient, and practical strategy for improving the activity and selectivity of E-selective semi-hydrogenation of alkynes.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Enrico Bergamaschi, Danijela Lunic, Liam A. McLean, Melissa Hohenadel, Yi-Kai Chen, Christopher J. Teskey
Summary: This study demonstrates, for the first time, the ability to use light to distinguish between ketones and carboxylic acids in more complex molecules. By utilizing different activation modes, a single catalytic system can be used for hydroboration, with chemoselectivity dictated solely by the presence or absence of visible light.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Jorge Gonzalez-Rodriguez, Raquel G. Soengas, Humberto Rodriguez-Solla
Summary: A cooperative zinc/indium system is employed for the stereoselective synthesis of highly functionalized (E)-1,3-dienes through the allylation/elimination reaction of aldehydes and ketones with 1,3-dichloropropene. The methodology offers a broad substrate scope, simple procedure, mild conditions, and ease of operation as its main advantages.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Liangliang Tong, Shijie Wu, Yafeng Li
Summary: A simple and adaptable synthetic method for synthesizing UiO-66-GO nanohybrid materials is reported in this study. Pd/UiO-66-rGO composite catalysts were successfully prepared by modulating the growth and dispersion of UiO-66 on GO surfaces. The Pd/UiO-66-rGO catalyst exhibited excellent activity and selectivity in catalytic transfer hydrogenation of aromatic alkenes. The presence of ultra-small Pd nanoparticles evenly dispersed on Pd/UiO-66-rGO contributed to its good catalytic performance. Additionally, the UiO-66rGO material provided protection to stabilize and prevent the leaching out of Pd active sites, ensuring the cyclic stability of the catalyst.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Multidisciplinary
Shao-Qian Yang, Ai-Jun Han, Yang Liu, Xin-Yuan Tang, Guo-Qiang Lin, Zhi-Tao He
Summary: In this study, a comprehensive investigation was conducted towards the stereoselective formal hydration and hydroaminoxylation of conjugated dienes by synthesizing new P,N-ligands and identifying an aryl-derived oxime as a surrogate for water and hydroxylamine. Additionally, the asymmetric hydroalkoxylation with new P,N-ligands was elucidated. Furthermore, versatile derivatizations following hydration provided indirect but concise routes to formal hydrophenoxylation, hydrofluoroalkoxylation, and hydrocarboxylation of conjugated dienes that have not been reported before. Finally, a ligand-to-ligand hydrogen transfer process was proposed based on preliminary mechanistic experiments.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Rui Wang, Yangqiu Liu, Qianyue Wang, Lin Zhang, Zhewei Li, Min Pu, Ming Lei
Summary: In this study, the mechanism of C-O bond activation of butanoic acid substrates with the 8-aminoquinoline (AQ) group catalyzed by Pd(OAc)(2) was investigated using density functional theory. The results revealed that the protodepalladation step is the rate-determining step. The presence of AQ directing group is critical for regioselectivity in C-H activation and beta-O elimination steps.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Physical
Kirti Singh, Abhishek Kundu, Debashis Adhikari
Summary: This article discusses the importance of ligands in coordination chemistry and highlights the impact of redox-active ligands in catalysis research. These ligands can act as redox reservoirs and also influence catalytic processes by changing the basicity of the metal.
Article
Chemistry, Multidisciplinary
Daniele Fiorito, Malaury Simon, Christophe M. Thomas, Clement Mazet
Summary: A [Ni/Mg]-catalyzed orthogonal tandem polymerization has been developed, starting from enol phosphates and leading to 1,4-cis-polydienes with selectivities up to 99%. By simple structural modifications of the monomeric unit, elastomeric or crystalline materials can be obtained. This tandem approach provides a straightforward and efficient way to enforce diversity and selectivity in diene polymerization while retaining a fair degree of control.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Organic
Chuan-Jin Hou, Alexander W. Schuppe, James Levi Knippel, Anton Z. Ni, Stephen L. Buchwald
Summary: A method for stereoselective hydroalkenylation of alkynes using enol triflates was reported in this study. The formation of Z,Z- or Z,E-1,3-dienes with excellent stereoselectivity and yield was achieved by leveraging an in situ-generated and geometrically pure vinyl-Cu(I) species. This approach allowed for the synthesis of highly substituted Z-dienes, including pentasubstituted 1,3-dienes, which are challenging to prepare using existing methods.
Article
Chemistry, Organic
Lei Yang, Weidong Shang, Li Zhang, Xia Zhang
Summary: The first Ni-catalyzed asymmetric reductive coupling of 2-aza-butadiene with aldehydes was achieved, leading to the synthesis of chiral gamma-secondary amino alcohols. This reaction shows good enantioselectivity and tolerance towards various functional groups, and may provide a complementary method to noble-metal-catalyzed protocols. Competition reactions demonstrated that 2-aza-butadiene is a more reactive coupling component than its full-carbon analogue, 1,3-butadiene. Interestingly, the reaction also produced beta-siloxyl imines, aza-aldol-type products that are difficult to access using conventional methods.
Article
Chemistry, Multidisciplinary
Mahesh M. Parsutkar, T. V. RajanBabu
Summary: This study presents a new cobalt(I)-catalyzed regio- and enantioselective hydroacylation reaction of dienes, providing chiral products containing ketone functionality. Different classes of dienes show distinct regioselectivity during the reaction, and a mechanism involving a Co(I)/Co(III) oxidative dimerization cycle is proposed. The efficient syntheses of commercial relevant compounds using this method demonstrate its practical utility.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Alexander D. Boeth, Michael J. Sauer, Walter Baratta, Fritz E. Kuehn
Summary: The bis-abnormal N-heterocyclic carbene (aNHC) ruthenium complexes showed high catalytic activity in transfer hydrogenation and Oppenauer-type oxidation reactions. The order of reactivity was found to be influenced by steric effects.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Iris K. M. Yu
Summary: Biorefinery plays a key role in achieving carbon neutrality in 30-40 years by transforming biomass into renewable energy and materials. Metal-reactant interactions are fundamental determinants of reaction rate and product distribution in the reductive upgrading of bio-based aromatic compounds.
Article
Polymer Science
Tommy Yunpu Zhao, Max Meirow, Akalanka Tennakoon, Xun Wu, Alexander L. L. Paterson, Long Qi, Anne M. M. LaPointe, Jessica V. V. Lamb, Takeshi Kobayashi, Massimiliano Delferro, Aaron D. D. Sadow, Wenyu Huang, Erik Luijten, Frederic A. Perras
Summary: Chemical polymer upcycling by processive catalysts is a promising strategy for plastic waste remediation, which can produce high-value products with minimal energy input. By using a novel processive catalyst with a mesoporous SiO(2) shell/Pt nanoparticle/SiO2 core architecture, we found that the deconstruction of polyolefins occurs within narrow pores and involves a dehydrogenation-rehydrogenation cycle. The porous architecture enables the catalyst to perform multiple successive cleavages to the same polymer chain, and the extent of processivity is strongly correlated with the length of the pores.
Article
Chemistry, Organic
Jie S. Zhu, Niklas Kraemer, Marina E. Shatskikh, Clarabella J. Li, Jung-Ho Son, Makhluf J. Haddadin, Dean J. Tantillo, Mark J. Kurth
Article
Chemistry, Multidisciplinary
Jie S. Zhu, Clarabella J. Li, Ka Yi Tsui, Niklas Kraemer, Jung-Ho Son, Makhluf J. Haddadin, Dean J. Tantillo, Mark J. Kurth
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Review
Chemistry, Multidisciplinary
Jie S. Zhu, Makhluf J. Haddadin, Mark J. Kurth
ACCOUNTS OF CHEMICAL RESEARCH
(2019)
Article
Chemistry, Organic
Niklas Kraemer, Clarabella J. Li, Jie S. Zhu, Julio M. Larach, Ka Yi Tsui, Dean J. Tantillo, Makhluf J. Haddadin, Mark J. Kurth
Article
Chemistry, Organic
Jie S. Zhu, Julio M. Larach, Robert J. Tombari, Phillip W. Gingrich, Stanley R. Bode, Jeremy R. Tuck, Hunter T. Warren, Jung-Ho Son, Whitney C. Duim, James C. Fettinger, Makhluf J. Haddadin, Dean J. Tantillo, Mark J. Kurth, David E. Olson
Article
Chemistry, Multidisciplinary
Mohammed A. Mahdaly, Jie S. Zhu, Vincent Nguyen, Young-Seok Shon
Article
Chemistry, Medicinal
Jung-Ho Son, Puay-Wah Phuan, Jie S. Zhu, Elena Lipman, Amy Cheung, Ka Yi Tsui, Dean J. Tantillo, Alan S. Verkman, Peter M. Haggie, Mark J. Kurth
Summary: A new class of spiro co-potentiators with improved potency for activating CFTR mutants was discovered through structure-activity studies, with analog 2i showing the highest efficacy. This compound represents a 17-fold improvement over the original compound identified in a small molecule screen.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Edwin Avila, Christos Nixarlidis, Young-Seok Shon
Summary: The catalytic activity and selectivity of two different water-soluble palladium nanoparticles capped with different ligands were investigated. The nanoparticles exhibited high regioselectivity in transforming allyl benzene to 3-phenylpropanal, and the yields reached up to 83%. The presence of benzylic hydrogen played a crucial role in the formation of a p-allyl Pd intermediate and the anti-Markovnikov addition of H2O.
Article
Chemistry, Multidisciplinary
Dominick D. Ortega, Nicholas Pavlakovich, Young-Seok Shon
Summary: This study investigates the structure-property relationships of lipid-nanoparticle assemblies (LNAs) and their catalytic activity in hydrogenation reactions. It is found that LNAs with palladium nanoparticles show decreased colloidal stability but increased catalytic activity. Temperature plays a significant role in the conversion yield of substrates in LNAs, with higher temperatures leading to higher conversion rates.
Review
Nanoscience & Nanotechnology
Al-Mahmnur Alam, Young-Seok Shon
Summary: This article summarizes a variety of interesting catalytic studies employing solubilized and freely movable noble metal nanoparticle catalysts for organic reactions in water-based systems. The impact of different ligands on the catalytic activity and selectivity of semi-heterogeneous nanoparticles in water is discussed in detail, with a categorization based on synthetic method and type of reaction. Systems using polymers, dendrimers, and ionic liquids as supporting or protecting materials are excluded from the review.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Kevin M. Vargas, Khin Aye San, Young-Seok Shon
ACS APPLIED NANO MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Alissar Monzer, Nayri Jabotian, Farah Ballout, Jie S. Zhu, Mark J. Kurth, Makhluf J. Haddadin, Hala Gali-Muhtasib
Review
Materials Science, Biomaterials
Kevin M. Vargas, Young-Seok Shon
JOURNAL OF MATERIALS CHEMISTRY B
(2019)
Article
Nanoscience & Nanotechnology
Hanging Pan, Serena Low, Nisala Weerasuriya, Bingli Wang, Young-Seok Shon
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.
