Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/anie.200352358 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Redox-Gated Optical Modulation of Coumarin-Triphenyliminophosphorane Fluorophores.
ACS Phys Chem Au
January 2025
Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 402, Taiwan.
Novel coumarin-triphenyliminophosphorane (TPIPP) fluorophores, synthesized via a nonhydrolytic Staudinger reaction, exhibit remarkable redox-responsive optical properties. Upon chemical and electrochemical oxidation, these compounds display a hypsochromic shift in absorption from 430 to 350 nm, accompanied by up to 11-fold fluorescence enhancement under 405 nm excitation. The fluorescence switching occurs at an electrochemical oxidation potential of approximately +2.
View Article and Find Full Text PDFElectrochemical and spectroelectrochemical investigation of Ru(por)(NO)(OAr) derivatives (por = octaethylporphyrin, tetraanisolylporphyrin; Ar = Ph, CH-2-NHC(O)CF; CH-2,6-(NHC(O)CF)).
Dalton Trans
January 2025
Department of Chemistry, Southern Illinois University Edwardsville, Edwardsville, IL, 62025-1652 USA.
The electrochemistry and spectroelectrochemistry of Ru(porphyrin)(NO)(phenoxide) complexes Ru(por)(NO)(OPh) (por = OEP, 1a; TAP, 2a; Ph = CH), Ru(por)(NO)(OAr) (por = OEP, 1b; TAP, 2b; OAr = -OCH-(2-NHC(O)CF)), Ru(por)(NO)(OAr) (por = OEP, 1c; TAP, 2c; OAr = OCH-(2,6-NHC(O)CF); OEP = octaethylporphyrinato dianion, TAP = tetraanisolylporphyrinato dianion) indicate that initial one-electron oxidation results in structure-dependent net reactivity at the phenoxide ligand. Oxidation of 1a generates 1a+, which undergoes a relatively slow rate-limiting second-order follow-up reaction. In contrast, 2a undergoes a diffusion-limited follow-up reaction after oxidation.
View Article and Find Full Text PDFThe synthesis of a transient cationic phosphaborene [(Mes*)P=B(CAAC)]+ (Mes* = 2,4,6,-trit-tert-butylphenyl, CAAC = cyclic alkylamino carbene) by halide abstraction from the B-brominated analogue is reported. This species was found to undergo rapid and selective intramolecular aliphatic C-H bond activation to yield a phosphinoborenium cation, which undergoes facile deprotonation to give a cyclic base-stabilized phosphaborene. Computational investigation of the mechanism of C-H activation indicates a boron-centred activation route with an exceptionally low barrier of 8 kJ mol-1, followed by a nearly barrierless hydride migration from boron to phosphorus.
View Article and Find Full Text PDFLack of TRIC-B dysregulates cytoskeleton assembly, trapping β-catenin at osteoblast adhesion sites.
FEBS J
January 2025
Department of Molecular Medicine, Biochemistry Unit, University of Pavia, Italy.
The trimeric intracellular cation channel B (TRIC-B), encoded by TMEM38B, is a potassium (K) channel present in the endoplasmic reticulum membrane, where it counterbalances calcium (Ca) exit. Lack of TRIC-B activity causes a recessive form of the skeletal disease osteogenesis imperfecta (OI), namely OI type XIV, characterized by impaired intracellular Ca flux and defects in osteoblast (OB) differentiation and activity. Taking advantage of the OB-specific Tmem38b knockout mouse (Runx2Cre;Tmem38b; cKO), we investigated how the ion imbalance affects the osteogenetic process.
View Article and Find Full Text PDFIon Mobility-Assisted Free Radical-Initiated Peptide Sequencing.
Int J Mass Spectrom
February 2025
Department of Chemistry, University of Nevada, 1664 N. Virginia Street, Reno, Nevada 89557, United States.
Free radical-initiated peptide sequencing (FRIPS) is a tandem mass spectrometry technique (MS/MS) that enables radical-based dissociation on instruments only capable of collisional activation. In FRIPS, peptides are chemically-derivatized with a compound that undergoes homolytic cleavage and generates radicals upon collisional activation. These radicals then propagate through the peptide backbone enabling the sequencing of peptide ions.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!