Results 51 to 60 of about 27,574 (257)

How Ionization Catalyzes Diels–Alder Reactions

Chemistry – A European Journal, 2022
AbstractInvited for the cover of this issue are Pascal Vermeeren, Trevor A. Hamlin, and F. Matthias Bickelhaupt of the TheoCheM group at the Vrije Universiteit Amsterdam. The cover art depicts how ionizing the dienophile lowers the Diels–Alder reaction barrier between 1,3‐butadiene and acrylaldehyde by reducing the destabilizing steric Pauli repulsion ...
Pascal Vermeeren, Trevor A. Hamlin, F. Matthias Bickelhaupt   +2 more
openaire   +5 more sources

Smart REASSURED Sensors via Machine‐Augmented Printable On‐Paper Arrays

Advanced Sensor Research, EarlyView.
This perspective highlights the emerging role of pattern‐recognition, printable on‐paper sensor arrays for intelligent PoC diagnostics. It discusses how paper's inherent limitations can be overcome through surface modification and scalable printing, and how machine‐learning analysis of cross‐reactive arrays enables multiplexed, low‐cost, and REASSURED ...
Naimeh Naseri, Saba Ranjbar
wiley   +1 more source

Modulating Integrin and Growth Factor Signaling With Peptides: Strategies to Synergistically Enhance Bone Tissue Regeneration

Advanced Science, EarlyView.
It has been demonstrated that, in the bone extracellular matrix (ECM), integrins and growth factor receptors (GFRs) engage in synergistic signaling to guide bone healing and regeneration. This review provides a comprehensive overview of current strategies using ECM‐derived peptides to recreate the cellular microenvironment and harness synergistic ...
Lluís Oliver‐Cervelló, Elisabetta Ada Cavalcanti‐Adam, Carlos Mas‐Moruno   +2 more
wiley   +1 more source

Focused Ultrasound-Mediated Release of Bone Morphogenetic Protein 2 from Hydrogels for Bone Regeneration

Gels
An ultrasound-responsive hydrogel system was developed that provides on-demand release when stimulated by focused ultrasound (fUS). Diels–Alder cycloadducts crosslinked polyethylene glycol (PEG) hydrogels and underwent a retrograde Diels–Alder reaction ...
Tyus J. Yeingst, Angelica M. Helton, Ferdousi S. Rawnaque, Julien H. Arrizabalaga, Dino J. Ravnic, Julianna C. Simon, Daniel J. Hayes   +6 more
doaj   +1 more source

An Enzyme‐Like Catalyzed Nanosheets for Redox Stress Oscillation Therapy Against Bacterial Infections

Advanced Science, EarlyView.
Bacterial biofilms form a physicochemical barrier. Their dense network structure and redox homeostasis confer high resistance to antimicrobial treatments and immune‐mediated killing and clearance. In this study, SnSe nanosheets with enzyme‐like properties and piezoelectric catalysis can oscillate to regulate bacterial redox homeostasis and improve the ...
Min Ge, Zhao Guo, Zhiming Zhang, Lanlu Lu, Zesong Ruan, Tingwang Shi, Yunfeng Chen, Ju Huang, Chaoliang Tan, Han Lin   +9 more
wiley   +1 more source

REACTION OF 4-METHYL- 1 2,4-TRIAZOLINE- 3,5-DIONE WITH DI AND TRI-SUBSTITUTED STYRENES S.E. Mallakpour* and G.B. Butler** [PDF]

Journal of Sciences, Islamic Republic of Iran, 1993
2,4,6-Triisopropylstryrene was synthesized in a single step via the Witting Reaction from the corresponding aldehyde. The reaction of three styrene's derivatives, 2,6-dimethylstyrene, 2,4,6-trimethylstyrene, and 2,4,6- triisopropylstyrene with 4-methyl-l,
doaj  

Bioorthogonal Sonodynamic Plug‐and‐Play Targeting Chimeras (SDPTAC) for Precise Targeted Protein Degradation

Advanced Science, EarlyView.
Bioorthogonal SDPTAC harnesses US‐responsive Ce6‐TCO and Tz ligands via IEDDA click chemistry to assemble degraders in situ, generating ROS that selectively eliminate nuclear, cytosolic, and membrane proteins, thereby suppressing deep‐seated tumors in vivo.
Yuhan Bao, Yaojin Zhu, Xinhao Wei, Yuxin Fang, Jiayi Zhu, Fei Gao, Guoqiang Dong, Shipeng He, Chunquan Sheng   +8 more
wiley   +1 more source

Simple 3D printed stainless steel microreactors for online mass spectrometric analysis

Heliyon, 2019
A simple flow chemistry microreactor with an electrospray ionization tip for real time mass spectrometric reaction monitoring is introduced. The microreactor was fabricated by a laser-based additive manufacturing technique from acid-resistant stainless ...
Gianmario Scotti, Sofia M.E. Nilsson, Ville-Pekka Matilainen, Markus Haapala, Gustav Boije af Gennäs, Jari Yli-Kauhaluoma, Antti Salminen, Tapio Kotiaho   +7 more
doaj   +1 more source

Catalyst Layer Modifications for Enhanced Performance of Fluorine‐Free Proton Exchange Membrane Fuel Cells

Advanced Energy and Sustainability Research, EarlyView.
Considerable improvement in the performance of fully‐hydrocarbon‐based fuel cells is necessary to replace and compete with Per‐ and polyfluoroalkyl substances‐containing fuel cells. Herein, a way to enhance the ionic conductivity of the catalyst layer (CL) by incorporating insoluble ionomer particles into the CL is presented.
Emmanuel Balogun, Subash Rajasekar, Spencer Thomas, Ana Laura Gonçalves Biancolli, Torben Saatkamp, Franklin O. Egemole, Simon Cassegrain, Steven Holdcroft   +7 more
wiley   +1 more source

Diels–Alder reactions of myrcene using intensified continuous-flow reactors

Beilstein Journal of Organic Chemistry, 2017
This work describes the Diels–Alder reaction of the naturally occurring substituted butadiene, myrcene, with a range of different naturally occurring and synthetic dienophiles.
Christian H. Hornung, Miguel Á. Álvarez-Diéguez, Thomas M. Kohl, John Tsanaktsidis   +3 more
doaj   +1 more source