Highly fluorinated tetraphenyl borate anions are of importance as weakly coordinating anions in metalorganic reactions. However, at high positive potentials their electrochemical stability in organic solvents is not sufficient. This was investigated by a comprehensive cyclic voltammetry study and can be used synthetically to generate highly fluorinated biphenyls.
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http://dx.doi.org/10.1039/c8cc02996b | DOI Listing |
Acta Biomater
January 2025
State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application; Suzhou key Laboratory of Macromolecular Deign and Precision Synthesis; College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China. Electronic address:
Tumor hypoxia is one of key challenges in deep tumor photodynamic therapy (PDT), and how to fix this issue is attracting ongoing concerns worldwide. This work demonstrates dually fluorinated unimolecular micelles with desirable and stable oxygen-carrying capacity, high cellular penetration, and integrative type I & II PDT for deep hypoxic tumors. Dually fluorinated star copolymers with fluorinated phthalocyanines as the core are prepared through photoinitiated electron/energy transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization under irradiation with NIR LED light at room temperature, followed by assembly into unimolecular micelles.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
January 2025
School of Biomolecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 10120, Thailand.
A single-component flavin-dependent halogenase, AetF, has emerged as an attractive biocatalyst for catalyzing halogenation. However, its flavin chemistry remains unexplored and cannot be predicted due to its uniqueness in sequence and structure compared to other flavin-dependent monooxygenases. Here, we investigated the flavin reactions of AetF using transient kinetics.
View Article and Find Full Text PDFChem Biol Drug Des
January 2025
Department of Molecular Biology and Biochemistry, University of California, Irvine, California, USA.
A new series of 13 ritonavir-like inhibitors of human drug-metabolizing CYP3A4 was rationally designed to study the R side-group and R end-group interplay when the R side-group is represented by phenyl. Spectral, functional, and structural characterization showed no improvement in the binding affinity and inhibitory potency of R/R-phenyl inhibitors upon elongation and/or fluorination of R-Boc (tert-butyloxycarbonyl) or its replacement with benzenesulfonyl. When R is pyridine, the impact of R-phenyl-to-indole/naphthalene substitution was multidirectional and highly dependent on side-group stereo configuration.
View Article and Find Full Text PDFJ Med Chem
January 2025
Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States.
Carfentanil, a highly potent synthetic opioid, paradoxically serves as a crucial positron emission tomography (PET) imaging tool in neurobiological studies of the mu-opioid receptor (MOR) system when labeled with carbon-11 ([C]CFN). However, its clinical research use is hindered by extreme potency and the limited availability of short-lived carbon-11 ( = 20.4 min).
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Energy and Materials Engineering and Advanced Energy and Electronic Materials Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea.
In lithium metal batteries, accurately estimating the Li solvation ability of solvents is essential for effectively modulating the Li solvation sheath to form a stable interphase and achieve high ionic conductivity. However, previous studies have shown that the theoretically calculated Li binding energy, commonly used to evaluate solvation ability, exhibits only a moderate correlation with experimentally measured ionic conductivity (R = 0.68).
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