Ari Fischer’s Post

✨Paper of the day✨ Mechanochemical Covalent Bond Formation: A Kinetic Perspective 🤝 This perspective paper in RSC Mechanochemistry (DOI: 10.1039/D3MR00018D) explores the kinetics of mechanochemical covalent bond formation, a crucial aspect of mechanochemistry 🔬. Mechanochemistry is a field that utilizes mechanical forces to drive chemical reactions, offering a promising approach to sustainable chemistry 🌿💚. ✅ Theme: The paper delves into the fundamental question of how stresses activate covalent-bond-forming reactions, a crucial aspect of mechanochemistry 🤔🔍. By understanding the kinetics of these reactions, researchers can optimize reaction conditions and predict outcomes 📈🔮. ▶️ Key Findings: ◼️ Mechanochemical reactions can significantly reduce solvent and energy requirements for forming covalent organic bonds 💡🌟. ◼️ Applied stress can distort organic molecules, lowering reaction activation energies and altering reaction trajectories 🔄🔩. ◼️ Nanoscopic probe-microscope tips enable the study of reactions on monolayers, surfaces, or nanoparticles, providing insight into primary reaction mechanisms 🔍🔎. ◼️ The emerging consensus is that stress accelerates reactions by distorting molecules, enabling prediction of mechanochemical reaction outcomes 📊🔮. ▶️ Implications: ◼️ Wider adoption of sustainable mechanochemical processes in synthetic chemistry, aligning with green chemistry principles 🌱🌿. ◼️ Potential for reduced energy and solvent requirements in chemical synthesis 💚🔋. _Read the full paper to delve deeper into the kinetics of mechanochemical covalent bond formation and its implications for sustainable chemistry!_ 📚🔓 #Mechanochemistry #CovalentBondFormation #ReactionKinetics #SustainableChemistry #GreenChemistry #RSCMechanochemistry #global #research #MIT #india #IIT #IISER #ICT #NIPER #NIT #IISC #instituteofchemicaltechnology #IICT #CSIR #NCL #purdue #harvard #oxford #scripps #stanford #ball #milling #chemistry #catalysis #organocatalysis #metalcatalysis #pharma #industry #growth #sector #new #sector #development #research #work #phd #PhD #doctor #thesis https://lnkd.in/dXF8u4P2

I am delighted to share our new paper on very interesting structural, electrochemical and biological features of several late transition metal complexes with nitrogen ligands bearing ferrocene units! A range of 2:1 ligand:metal complexes was prepared with Ni(II), Cu(II), Cd(II), and Zn(II) cations and characterized by crystallographic, spectroscopic, electrochemical, biochemical, and computational DFT methods. The work came as a result of a huge collaborative effort involving a large multidisciplinary research team with different expertise, and is published in Applied Organometallic Chemistry by Wiley (Q1, IF = 3.9). Hats off to Silvio Jakopec, Natalija Pantalon Juraj, Dijana Jadresko, Anamaria Brozovic, Vanja Tadic, Lea Milić, Berislav Perić, Silvana Raic-Malic and Srećko Kirin from Ruđer Bošković Institute and University of Zagreb Faculty of Chemical Engineering and Technology. #computationalchemistry #dft #crystallography #spectroscopy #electrochemistry #molecularbiology #organometallicchemistry #metalcomplexes #stereochemistry

In our latest paper, my coauthors and I tackle an interesting design problem in the field of flow biocatalysis. We study the design of tubular flow reactors packed with porous particles. Enzymes can be immobilized in the pores of porous particles with different distributions, and the porous particles can be arranged in reactor zones with different designs. We developed a 1D plug-flow model for the system that is detailed enough to take into account the reaction-diffusion phenomena within the porous particles. We compared the most basic designs via analytical solution of the model equations. Finally, we proved that separating catalytic particles in different zones is better than mixing them in one zone for any monotonically increasing reaction rate model. Read more about our work using the following link or by getting a copy of the next Chemie Ingenieur Technik issue.

Rassmus Andersson Doctoral thesis: Discovering new ground in ion transport: Exploring coordination effects in polymer electrolytes   Date: 2024-05-17 Time: 13:15 Location: in Eva von Bahr, Ångström Laboratory, Uppsala Opponent is Professor Nitash P. Balsara from the University of California, Berkeley, United States. Supervisor: Assoc. Prof. Jonas Mindemark, Department of Chemistry - Ångström, Structural Chemistry Thesis: https://lnkd.in/d9a9JRQF   The exponentially increasing demand for portable and stationary energy storage devices is pushing the development of lithium-ion batteries (LIBs). This requires safer and more sustainable electrolytes where solid polymer electrolytes (SPEs) are a viable alternative to the flammable liquid electrolytes used nowadays. However, SPEs are characterized by poor ionic conductivity compared to their liquid equivalents, preventing large-scale implementation. Furthermore, to meet the increasing production rate of batteries, alternative battery chemistries based on more abundant resources than Li are explored. To address these matters, a fundamental understanding of ion transport in SPEs for a range of relevant cations is vital in the development process. In summary, this thesis contributes toward the understanding of ion transport in systems belonging to “next-generation” batteries, where SPEs for lithium-metal batteries as well as for cations “beyond Li” are considered to play an important part.

Have a look at my latest animated cover design inspired by Max von Delius's team's research on chiral nanohoops as asymmetric organocatalysts! This study explores the integration of a BINOL-derived phosphoric acid into a cycloparaphenylene (CPP) nanohoop scaffold, creating a unique confined reaction environment for asymmetric catalysis. In this paper, they have made significant strides in enhancing the efficiency and selectivity of chemical transformations using this novel approach. Key highlights from the article: ⏣ A chiral nanohoop catalyst was synthesized, achieving remarkable catalytic activity with near-quantitative yields and enantioselectivities up to 96% ee in asymmetric transfer hydrogenation of quinolines. ⏣ The nanohoop catalyst demonstrated superior performance compared to non-cyclic reference catalysts, showcasing the potential of confined reaction spaces in organocatalysis. ⏣ Unexpected substrate selectivity was observed, with the catalyst showing high activity for aromatic substrates but low reactivity towards alkyl-substituted quinolines, indicating specific non-covalent effects within the nanohoop cavity. This is the way toward new designs of structurally complex organocatalysts with enhanced selectivity. I am already excited to see how this work will influence future developments in asymmetric organocatalysis and supramolecular chemistry! Co-authors: Adriana Sacristan Martinín, Fabian Schwer, Thomas Pick, Anika Lebzelter and Alexander Pöthig Ulm University ⌬ Technical University of Munich #sciart ⌬ #research ⌬ #chemistry

Looking for something (not excessively long) to read? We just published a review on the molecular design of protein-based materials, link below 👇

Glad to share the publication of our article in the Journal "Surfaces and Interfaces" Congrats to my research students and collaborators who participated in this research project! 👏 👏 👏 This study introduces avenues for designing effective sensing platforms through the integration of Density Functional Theory (DFT) studies with experimental validation. DFT enables the exploration of various materials to pinpoint those with optimal interactions with the analyte, thereby saving time and resources by identifying promising materials for further experimental investigation. This research approach advocates for future researchers to integrate theoretical and experimental work more closely, aiming to design and enhance sensor efficiency. Such a collaborative approach extends beyond sensor design, encompassing fields like electrochemical energy storage and electrocatalysis, thus contributing to advancements in these areas of research. https://lnkd.in/eih_CCKB

🔬Exciting Research Update!🔬 I am thrilled to announce my first ever co-authorship with Prof. Vincent Wing-hei Lau on our recently published paper in ACS Publications titled "Can X-ray Photoelectron Spectroscopy Characterize Photocatalytically Relevant Defects in Graphitic Carbon Nitride?" This research contributes to the future of non-toxic catalysts by providing insights into the possibilities of using X-ray photoelectron spectroscopy (XPS) to analyze the structural defects of graphitic carbon nitride (g-C3N4), a promising material in green chemistry. This could lead to the development of more efficient and environmentally friendly catalysts for chemical reactions, including hydrogen production, which may reduce the reliance on toxic materials and advancing sustainable technologies. My work here, alongside with Nathania Putri Wijaya, is synthesizing the melons (Archetype of g-C3N4 materials), performing the analyses of the melons with the guidance of our seniors, and performing the photocatalytic tests under the guidance of Prof. Vincent. Special thanks to Prof. Vincent for offering me the chance to dive into my interest on materials for sustainable energy, and always pushing me to think critically and proactively. I would like to also thank my labmates/seniors for always being supportive during my work in the lab. I believe this experience opens my first step of my contribution to the world of sustainable energy! Check it out here: https://lnkd.in/gU4pbYSb #Research #Sustainability #MaterialsScience #XPS #Innovation #Chemistry #Energy

CNIE researchers Ebony Shire and Diego L. from UCL Chemical Engineering have published the review paper “Molecular design of protein-based materials – state of the art, opportunities and challenges at the interface between materials engineering and synthetic biology” in Molecular Systems Design & Engineering (Royal Society of Chemistry MSDE), together with collaborators André Coimbra and Leonardo Rios Solis from UCL Biochemical Engineering and Carlos Barba-Ostria from Universidad San Francisco de Quito (Ecuador). In this open-access article, part of MSDE's "Emerging Investigator" series, the team discusses recent progress in the field of recombinant structural proteins for material applications, in terms of sequence–function relationships and DNA synthesis technologies. The article also covers computational tools that will help in developing rapid prototyping pipelines for this family of biopolymers, as well as future challenges to make protein-based materials a commercially viable alternative to current fossil-based polymers. Link to the article: https://lnkd.in/e6NjcrQn

Hello all chemists and interested parties, The 2024's Royal Society of Chemistry's Electrochemistry Newsletter is online and available to download. Content includes: 1. Conference reports both national and regional (inc. Electrochem23 and Electrochem24) 2. Industry Insight Interview with Dr Brian Morin, CEO of Soteria  3. Commonwealth Scholarships Commission report  4. Further information regarding (SCI, Royal Society of Chemistry & The Electroanalytical Sensing Systems Group) 5. Product information Both Carlos and myself would like to extend our thanks to all contributors to the newsletter. If you are interested in contributing to future newsletters, please contact either Carlos Ponce-de-Leon or myself. The newsletter can be accessed by the following link https://lnkd.in/eP2jfdpV For more information on the RSC's Electrochemistry group the page is listed below. https://lnkd.in/efdikheg Please share and like :)