Results 51 to 60 of about 12,869 (241)

Chlorination‐Driven BODIPY Fluorescent Probes for the Selective Monitoring of Myeloperoxidase Activity in Cells and Inflamed Mouse Models

open access: yesAngewandte Chemie, EarlyView.
A meso‐carboxamide‐substituted BODIPY fluorescent probe reports myeloperoxidase (MPO) activity via electrophilic chlorination by MPO‐derived HOCl, generating a highly emissive chlorinated product with a ca. 40 nm bathochromic shift. Applications in quantitative MPO assays, cellular imaging of MPO‐derived HOCl, redox‐dependent discrimination of cancer ...
Siyoung Cho   +3 more
wiley   +2 more sources

Specific Position of Halogen in Crystalline TADF Scintillators Enables Efficient Triplet Harvesting Through Vibrational Modulation of Spin–Orbit Coupling

open access: yesAdvanced Materials, EarlyView.
Specific ortho‐halogenation transforms crystalline TADF emitters into efficient organic scintillators. Fluorine reduces the effective singlet–triplet separation, while chlorine combines near‐degenerate excited states with vibrational modulation of spin–orbit coupling.
Illia E. Serdiuk   +8 more
wiley   +1 more source

Two-Component FAD-Dependent Monooxygenases: Current Knowledge and Biotechnological Opportunities

open access: yesBiology, 2018
Flavoprotein monooxygenases create valuable compounds that are of high interest for the chemical, pharmaceutical, and agrochemical industries, among others. Monooxygenases that use flavin as cofactor are either single- or two-component systems.
Thomas Heine   +4 more
doaj   +1 more source

Semi‐Telechelic Polymers from Mechanochemical C─C Bond Activation

open access: yesAdvanced Science, 2023
Unstrained C─C bond activation is attained in homopolymers through mechanochemical bond scission followed by functionalization to yield mostly semi‐telechelic polymer chains.
Rony Schwarz, Charles E. Diesendruck
doaj   +1 more source

Recent Advances in Plasma‐Enhanced Atomic Layer Etching for Next‐Generation Nanofabrication

open access: yesAdvanced Materials Interfaces, EarlyView.
Continued semiconductor miniaturization demands atomic‐scale patterning and ultralow surface roughness beyond the capabilities of conventional reactive ion etching. This review highlights advances in isotropic and anisotropic plasma‐enhanced atomic layer etching since 2020, covering fundamental mechanisms, applications across major semiconductor ...
Shih‐Nan Hsiao
wiley   +1 more source

Site-selective chlorination of pyrrolic heterocycles by flavin dependent enzyme PrnC

open access: yesCommunications Chemistry
Halogenation of pyrrole requires strong electrophilic reagents and often leads to undesired polyhalogenated products. Biocatalytic halogenation is a highly attractive approach given its chemoselectivity and benign reaction conditions.
GuangRong Peh   +14 more
doaj   +1 more source

Quantum‐Trained AI Enables Inverse Design of Organic Frontier Orbitals at Billion‐Scale

open access: yesAdvanced Science, EarlyView.
Quantum‐trained AI links molecular substructures to frontier‐orbital energetics and enables interpretable screening across nearly one billion GDB‐13 molecules. By combining fragment‐ and ring‐level insights with donor–acceptor energy alignment against ITIC, the framework narrows an immense chemical space to a small set of promising candidates and ...
Yeongnam Ko, Se Jin Kim, Ki Chul Kim
wiley   +1 more source

Cryptic Halogenation Reactions in Natural Product Biosynthesis [PDF]

open access: yes, 2021
Enzymatic halogenation reactions are essential for the production of thousands of halogenated natural products. However, in recent years, scientists discovered several halogenases that transiently incorporate halogen atoms in intermediate biosynthetic ...
Adak, Sanjoy   +2 more
core   +1 more source

Amine and Titanium (IV) Chloride, Boron (III) Chloride or Zirconium (IV) Chloride-Promoted Baylis-Hillman Reactions

open access: yesMolecules, 2001
The Baylis-Hillman reactions of various aryl aldehydes with methyl vinyl ketone at temperatures below -20oC using Lewis acids such as titanium (IV) chloride, boron (III) chloride or zirconium (IV) chloride in the presence of a catalytic amount of ...
Shi-Cong Cui, Jian-Kang Jiang, Min Shi
doaj   +1 more source

A New Method of Halogenation of Aromatic Compounds [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2012
: A halogenation of eleven aromatic compounds using a new method for iodination of activated aromatic compounds is presented. The reaction of one mole of aromatic compound with a mixture of one mole Potassium iodide and two moles Potassium sulfate in the
Marwan M. Farhan
doaj   +1 more source

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