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Article
Chemistry, Multidisciplinary
Krishnendu Das et al.
Summary: This article describes a self-assembly of surfactant-based structures that rely on a combination of a thermodynamically controlled and a dissipative pathway for their formation. Adenosine triphosphate (ATP) acts as a high-affinity template and triggers the formation of assemblies at low surfactant concentrations. The presence of these assemblies allows for the activation of a dissipative self-assembly process by a weak-affinity substrate. The induced recruitment of additional surfactants by the substrate leads to the spontaneous formation of catalytic hotspots in the ATP-stabilized assemblies, resulting in substrate cleavage. Catalysis can be observed at a surfactant concentration where low catalytic activity is observed in the absence of ATP.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Biochemical Research Methods
Ghazal Bashiri et al.
Summary: Nanoparticle (NP)-based therapeutics have revolutionized translational medicine, but the mechanisms by which NPs interact and evolve in biological environments remain poorly understood. When exposed to physiological fluids, NPs are encased in a protein corona (PC) that can profoundly impact their behavior. The conformation and orientation of proteins in vivo can be influenced by biological factors and interactions with NPs, potentially altering their function. This review explores the effects of PC on protein conformation and discusses how this knowledge can be leveraged for therapeutic purposes.
Article
Chemistry, Multidisciplinary
Ekta Shandilya et al.
Summary: Directional interactions and the assembly of a nanobioconjugate in clusters at a specific location are important for patterning and microarrays in biomedical research. In this study, we demonstrate that surface patterning of surfactant-functionalized nanoparticles can be controlled through synergistic enzyme-substrate-nanoparticle affinity and the phoretic effect. We show the modulation of aggregation of cationic gold nanoparticles by multivalent anionic nanoparticle binding and the introduction of an enzyme gradient, as well as the surface deposition pattern via the coffee ring effect. Additionally, we observe changes in capillary phoresis parameters due to the introduction of ATP-loaded nanoparticles, which has implications for disease diagnostics.
Article
Chemistry, Multidisciplinary
Eman Ahmed et al.
Summary: Multicompartment micelles (MCMs) containing acid and base sites in discrete domains were prepared from poly(norbornene)-based amphiphilic bottlebrush copolymers in water. Acid and base sites were localized in different compartments, enabling a nonorthogonal reaction sequence. Computational simulations using dissipative particle dynamics (DPD) determined the composition required for effective site-isolation of catalysts. This study presents MCMs as a new class of nanostructures for one-pot multistep nonorthogonal cascade catalysis in water, providing a foundation for isolating incompatible catalysts.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Chemistry, Physical
Lixin Chen et al.
Summary: Water is a sustainable solvent that can replace organic solvents in synthesis techniques, but its applications are often limited by the low solubility of organic compounds. This review categorizes aqueous-phase organic reactions into different phases and summarizes recent breakthroughs, such as micellar catalysis, Pickering emulsion catalysis, micro-nanobubble/foam catalysis, and dry water catalysis, as well as the advantages of using water as a medium. The current challenges and future perspectives on multiphase catalysis in aqueous-phase reactions are also discussed.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Romain Carpentier et al.
Summary: The catalytic aerobic oxidative cleavage of vicinal diols can be achieved in water using a recyclable micellar medium with a vanadium aminotriphenolate complex. Water micellar media offer a safe and environmentally friendly alternative to organic solvents in synthesis. The incorporation of the vanadium aminotriphenolate complex in zwitterionic dodecyl phosphocholine (DPC) and mixed TPGS-750-M:DPC micelles resulted in efficient carbonyl derivative formation without overoxidation, even with low catalyst loading and high TONs. The mixed micelles, combining the stability of DPC and extraction properties of TPGS-750-M, can be recycled and achieve full conversion with catalyst and substrate reloading. The reactivity of substrates in micelles depends not only on their lipophilicity but also on the ease of access to the catalyst and its location in the micellar phase, as revealed by DOSY experiments.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Review
Chemistry, Multidisciplinary
Gaspard Hedouin et al.
Summary: Solvents are a major source of chemical waste, and there is a growing demand for more environmentally friendly alternatives. While water can sometimes be a suitable substitute for organic solvents, its use as a sole solvent is impractical. However, recent advancements in additives have allowed for chemistry in water, including the use of micelles as nanoreactors. Micellar technology has proven to be a sustainable alternative for many reactions, with potential beyond serving as a reaction medium.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Preeti Bhatt et al.
Summary: We developed a supramolecular self-assembled system (SupraZyme) with multi-enzymatic activity for the sensitive detection of neurotransmitters and organophosphorus pesticides. The system showed oxidase-like activity for NTs detection and peroxidase-like activity for OP pesticides detection.
Review
Chemistry, Inorganic & Nuclear
Tharique N. Ansari et al.
Summary: In the last few decades, cross-coupling approaches using palladium as a catalyst have been widely used for efficient generation of structural diversity. However, traditional practices in organic synthesis have been found to be inefficient due to the use of organic solvents. Using water as a reaction medium along with non-ionic surfactants provides a sustainable alternative, reducing the reliance on toxic organic solvents. This review discusses recent advances in micellar catalysis applied to palladium-mediated cross-couplings, as well as future directions and challenges.
COORDINATION CHEMISTRY REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Reka Adamik et al.
Summary: This review provides a conceptual and critical summary of micellar synthesis possibilities that are well suited to DEL synthesis, as well as discussion of existing examples of micellar DEL approaches and selection of micellar organic transformations fundamentally suitable for DEL.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Priyanka et al.
Summary: Understanding the changes in functional properties of synthetic nanoscale self-organized systems by introducing exogenous modules has broad applications in designing responsive biomimic materials. In this study, a substrate-driven nanoscale vesicular assembly was developed, and it was found that nucleotides interact differently with the assembly, leading to alterations in its functional properties.
Article
Chemistry, Multidisciplinary
Samuel E. Hoff et al.
Summary: Functionalization of nanoparticles with specific ligands can control specific diagnostic and therapeutic responses. This study uses molecular dynamics simulations to investigate self-assembled monolayers of multisegment ligands on gold nanoparticles, showing that they can mimic mixed hydrophobic and hydrophilic ligand coatings, with control over patterns, hydrophilicity, and specific recognition properties.
Review
Chemistry, Applied
Tommaso Lorenzetto et al.
Summary: The replacement of organic solvents and catalytic reactions in water is an emerging issue, with enzyme-mediated reactions in water showing high activity and stereoselectivity. Micellar catalysis is a true alternative approach that provides good activity under mild conditions, with the potential for catalyst and micellar medium recycling.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Materials Science, Biomaterials
Carmen C. Piras et al.
Summary: Hydrogels with spatio-temporally controlled properties were fabricated using mild acidification protocols. The hybrid gels showed highly tunable properties and antibacterial activity, making them potential candidates for regenerative medicine applications.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Xianglong Li et al.
Summary: Glucose oxidase-based starvation therapy using organosilica hybrid micelles and photothermal enhancement shows great potential for efficient cancer treatment in vivo.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Physical
Payel Dowari et al.
Summary: Biocatalysis is a significant area of research in modern times, with industries exploring it extensively in order to achieve greener methods for various applications. This study systematically analyzes peptide amphiphiles (PAs) to identify the most effective catalyst with esterase-like activity. Immobilizing catalytic peptides on solid surfaces can lead to the development of cost-effective catalytic formulations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Bin Wu et al.
Summary: This review highlights the recent development of nanocatalyst-enabled chemical transformations in water, using nanomicelle/surfactant chemistry and related technology. Various chemical reactions, including those commonly used in the pharmaceutical industry, are discussed. The potential implementation of this nanotechnology in large-scale synthesis at an industry level is also briefly touched upon.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Manju Solra et al.
Summary: The development of superior functional enzyme mimics (nanozymes) is crucial for various practical applications. This study presents a supramolecular coordination bonding-based dynamic vesicle with multienzymatic activity. The nanozyme shows high sensitivity and stability, making it promising for point-of-care diagnostics and environmental remediation. pH variation can control the dynamic laccase-mimetic activity of the active nanozyme, which is a novel finding.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Nikita Das et al.
Summary: In living organisms, enzyme catalysis in aqueous media has precise spatiotemporal control. This knowledge has inspired the design of biomimetic artificial catalysts. However, it is challenging for these catalysts to be effective in natural-like environments. Control over reaction rate and selectivity can be achieved by incorporating stimuli-responsive features into smart catalytic systems. This review summarizes switchable catalytic systems that operate in aqueous environments in response to external stimuli, providing new opportunities for the development of smart materials for biomedicine and chemical biology.
COMMUNICATIONS CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Akshi Deshwal et al.
Summary: This study reports the chemotactic behavior of alkaline phosphatase (ALP) towards carbohydrates and metal ions under microfluidic conditions. The research found that ALP migrates marginally away from the carbohydrate gradient, while exhibiting more prominent migration towards divalent metal ions. This differential phoresis is driven by the Hofmeister effect, which causes changes in the surface zeta potential and osmotic pressure imbalance of ALP.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Shikha et al.
Summary: In this study, we report the migrational behavior and spatial distribution of calf thymus DNA in various physiologically relevant ion gradients. We observed amplified phoresis towards high concentrations of Mg2+ and Ca2+ compared to other ions, as well as non-uniform DNA coating in the ion gradient. This process, controlled by the effective charge and diffusion coefficient of the DNA-metal ion complex, has potential applications in nucleic acid-based surface patterning, biosensors, and dynamic biocolloidal assembly and transport.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Rishi Ram Mahato et al.
Summary: The study demonstrates a spatiotemporal pH gradient formation pattern on a hydrogel surface using enzymatic reactions. The presence of cationic gold nanoparticles helps to perpetuate the generated gradient effect and shows a concerted kinetic response following the pH dynamics in the gel matrix. This nanoparticle-driven spatiotemporally resolved gel matrix has potential applications in membrane-free generation and control of spatially segregated chemistry at the macroscopic scale.
Article
Biochemistry & Molecular Biology
Sheetal Rani et al.
Summary: Cytochrome c displays proficient proton-transfer catalytic property on self-organized systems, enhancing Kemp elimination by approximately 750-fold. This catalytic property is mainly facilitated by His18 for proton abstraction, promoting the KE catalysis through E2 pathway. Additionally, under reducing conditions, the redox pathway becomes predominant, showing almost 750-fold enhanced catalysis by cyt c compared to aqueous buffer.
Review
Chemistry, Multidisciplinary
Krishnendu Das et al.
Summary: Life is a non-equilibrium state of matter sustained by energy expenditure, mostly utilizing chemical energy stored in molecules. Understanding the transfer of chemical energy to biochemical processes is crucial for developing artificial systems with life-like processes. Strategies for controlling the structural organization of organic molecules have been identified based on distinguishable physical-organic foundations, with examples from biology and chemistry illustrating their practical implementation and unique opportunities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Ekta Shandilya et al.
Summary: The study reports on the self-assembly of catalytically active gold nanorods by tuning their reactivity towards proton transfer reactions at different pH levels. The mechanism behind this phenomenon involves alteration of surface charge, enhanced diffusivity during catalytic processes, and the acceleration of reaction rates in nanosized hydrophobic cavities. Additionally, the study demonstrates a catalytic phenomenon that can cascade to other reactions without direct involvement of substrates and products from the starting reactions.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Review
Chemistry, Physical
Pascal Hauk et al.
Summary: Chemistry in water enabled by surfactants has seen significant growth and interest in the last decade, but there are still gaps in understanding the physico-chemical and mechanistic aspects. Further developments are needed for a larger impact in the future.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Rishi Ram Mahato et al.
Summary: The study introduces a self-assembled modular catalytic system based on multivalent interaction, where the catalytic preference and activity of gold nanoparticles can be controlled by changing the multivalent scaffold around them. The temporal control of the system enables the design of a higher complexity system with preprogrammed reaction networking property.
Review
Chemistry, Multidisciplinary
Stefano Fedeli et al.
Summary: Bioorthogonal transformations are chemical reactions that use pathways inaccessible to biological processes, providing new approaches for imaging and therapeutic strategies. Transition metal catalysts are widely employed as bioorthogonal catalysts, but face challenges in direct application in living systems, which can be addressed by incorporating them into nanomaterial scaffolds.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Michael D. Ludden et al.
Summary: The octanuclear M8L12 coordination cage can catalyze the Kemp elimination reaction of 5-nitro-1,2-benzisoxazole with hydroxide, resulting in the production of 2-cyano-4-nitrophenolate. The reaction occurs at the external surface of the cage, and the rate of catalysis is influenced by the presence of added anions which displace hydroxide ions from the cage surface. Different anions show varying binding affinities to the cationic cage surface, impacting the catalyzed Kemp elimination reaction.
Article
Chemistry, Multidisciplinary
Bin Yang et al.
Summary: By using light-induced differences in surface chemistry, it is possible to control the properties of a low molecular weight gelator during bulk assembly, allowing for localized control of the gel; this method provides a way to prepare a single domain hydrogel with mechanically heterogeneous properties.
Review
Chemistry, Multidisciplinary
Margery Cortes-Clerget et al.
Summary: This review considers water as the logical reaction medium for the future of organic chemistry, discussing both on water and in water phenomena. It highlights the unique roles water plays in organic synthesis.
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Carles Acosta-Silva et al.
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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
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Biophysics
Md. N. Karim et al.
BIOSENSORS & BIOELECTRONICS
(2018)
Review
Biochemical Research Methods
Elena Colangelo et al.
BIOCONJUGATE CHEMISTRY
(2017)
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Chemistry, Multidisciplinary
Dongshi Zhang et al.
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Enis Sanchez et al.
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ADVANCED MATERIALS
(2012)
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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
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CHEMISTRY-A EUROPEAN JOURNAL
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COORDINATION CHEMISTRY REVIEWS
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INORGANICA CHIMICA ACTA
(2007)
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S Hwang et al.
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F Manea et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2004)
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(2003)
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