Results 281 to 290 of about 678,239 (344)

A Dual‐Emissive DNA‐Templated Silver Nanocluster with Near‐Infrared I and II Emission

open access: yesAdvanced 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

Exploring the Impact of the Presence of 9,9′‐Spirobifluorene Moieties on the Performance of Carbonyl‐Based Multiresonant Thermally Activated Delayed Fluorescence Organic Light‐Emitting Diodes

open access: yesAdvanced Optical Materials, EarlyView.
The impact of decorating the multiresonant thermally activated delayed fluorescence (MR‐TADF) emitter DiKTa with 9,9′‐spirobifluorene units is explored with regard to number, position, and incorporation type. Four novel sky‐blue narrowband MR‐TADF emitters are developed, and in the OLED devices, a structure‐property relationship is observed with ...
Janine Haug   +11 more
wiley   +1 more source

Analysis of furan in different foodstuffs using gas chromatography mass spectrometry

open access: yesCzech Journal of Food Sciences, 2004
K. Hoenicke   +3 more
doaj   +1 more source

Breath fingerprint of colorectal cancer patients by gas chromatography-mass spectrometry analysis preparatory to e-nose analyses. [PDF]

open access: yesPract Lab Med
Dugheri S   +12 more
europepmc   +1 more source

Electrochemical Trifluoromethylchlorosulfonylation of Alkenes via Copper‐Mediated SO2Cl Radical Transfer

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
This article reports an electrosynthetic method for vicinal trifluoromethylchlorosulfonylation of alkenes using [Cu(MeCN)4]PF6 and triethylamine, without elaborate ligands. The reaction efficiently adds CF3 and SO2Cl across diverse unactivated alkenes with broad functional group tolerance.
Sachini Rodrigo   +2 more
wiley   +1 more source

Biocatalytic Construction of a Chemical Exchange Saturation Transfer Magnetic Resonance Imaging Nucleoside Probe: Synthesis and Evaluation of 5‐Methyl‐5,6‐Dihydrothymidine

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Al‐Hilfi et al. present a biocatalytic strategy for synthesizing 5‐methyl‐5,6‐dihydrothymidine (5‐MDHT), a sensitive MRI contrast agent. The study demonstrates that recombinant enzyme catalysis offers an efficient, sustainable, and eco‐friendly alternative to traditional chemical synthesis for producing clinically relevant imaging probes.
Aimen Al‐Hilfi   +8 more
wiley   +1 more source

Method using gas chromatography mass spectrometry (GC-MS) for analysis of nitrate and nitrite in vegetables

open access: gold, 2013
Othman Qadir   +4 more
openalex   +1 more source

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