Results 141 to 150 of about 367,498 (388)
A Dual‐Emissive DNA‐Templated Silver Nanocluster with Near‐Infrared I and II Emission
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.This study presents a dual‐emissive DNA‐stabilized silver nanocluster with a nanosecond‐lived NIR‐I emission band and a microsecond‐lived NIR‐II emission band. Mass spectrometry establishes that the nanocluster has molecular formula (DNA)2[Ag17]11+. DNA sequence variations reveal critical nucleobases for stabilization, and modifications at the DNA 5 ...
Anna Gonzàlez‐Rosell +6 more
wiley +1 more source
Electronic Spectroscopy of Isolated DNA Polyanions
, 2018 In solution, UV-vis spectroscopy is often used to investigate structural changes in biomolecules (i.e., nucleic acids), owing to changes in the environment of their chromophores (i.e., the nucleobases).
Daly, Steven +3 more
core +2 more sources
Advanced Robotics Research, EarlyView.Amphiphilic chloroazobenzenes, bearing different amino acids as end groups alanine, phenylalanine, and valine, exhibit excellent photoisomerizations. Varying structures of three amino acid groups participate in supramolecular formations and therefore photoinduced morphological transformations via adjusting intermolecular interactions. These interaction
Shuangshuang Meng +3 more
wiley +1 more source
Electrospray Tandem Mass Spectrometry of 3'-azido-2',3'dideoxythymidine and of a Novel Series of 3'-azido-2',3',4'-trideoxy-4'thio-5-halogenouridines and their Respective α-Anomers [PDF]
, 1994 Joseph Banoub +6 more
openalex +1 more source
Advanced Synthesis &Catalysis, EarlyView.In the presence of a Pd0 catalyst, large π‐extended arynes trimerize in an unusual manner to forge extremely compact and strained chiral benzenoids. This new trimerization reaction involves a 1,7‐Pd isomerization, a rare and poorly understood process that is elucidated.
Albert Artigas +6 more
wiley +1 more source
Investigations into the post-translational modification and mechanism of isopenicillin N:acyl-CoA acyltransferase using electrospray mass spectrometry [PDF]
, 1993 Robin T. Aplin +4 more
openalex +1 more source
Advanced Synthesis &Catalysis, EarlyView.A dual photocatalytic system of o‐PQ and Sn(OTf)2 enables visible light‐induced Mannich‐type addition of ethers to nitrones via Csp³–H activation. This oxidant‐free method offers broad scope and good yields. Mechanistic studies suggest that a photoexcited o‐PQ–Sn(II) complex mediates hydrogen atom transfer to form α‐oxy radicals for nitrone addition. A
Pradip Ramdas Thorve +2 more
wiley +1 more source
Multi-residue analysis of pharmaceuticals in Belgian surface water : a novel screening-to-quantification approach using large-volume injection liquid chromatography coupled to high-resolution mass spectrometry [PDF]
, 2013 The ever growing number of emerging micropollutants such as pharmaceuticals requests rapid and sensitive full-spectrum analytical techniques. Time-of-flight highresolution mass spectrometry (TOF-HRMS) is a promising alternative for the state-ofthe- art ...
Demeestere, Kristof +3 more
core
Photoredox‐Catalyzed Synthesis of a Novel Class of Fluoroalkyl Pyrazolones
Advanced Synthesis &Catalysis, EarlyView.A photoredox strategy enables regioselective synthesis of fluoroalkyl 2‐pyrazolin‐5‐ones via radical addition and cyclization. This mild, metal‐free method shows a broad substrate scope, operates in batch and flow systems, and offers a sustainable approach to fluorinated heterocycles with potential applications in medicinal chemistry.
Emanuele F. Pissinati +3 more
wiley +1 more source
Advanced Science, EarlyView.These findings suggest that UCP2 promotes LD formation and release in acinar cells by upregulating ACSL3 expression. This alteration in the local lipid metabolic environment indirectly drives the MMT process. Additionally, UCP2 may regulate the acetylation of Smad3 through Sirt1, enhancing its nuclear activity and activating the TGF‐β/ Smad3 signaling ...
Kunpeng Wang +9 more
wiley +1 more source