Results 131 to 140 of about 706,792 (383)

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, Vanessa Rück, Mikkel B. Liisberg, Cecilia Cerretani, Villads R. M. Nielsen, Tom Vosch, Stacy M. Copp   +6 more
wiley   +1 more source

Organic, Transparent, and Flexible Films Exhibiting White‐Light Emission via Polymer‐Network Engineering: A Non‐Dye‐Centric Strategy

Advanced Optical Materials, EarlyView.
A hydrogel‐based white light‐emitting (WLE) material is synthesized, where emission results from the synergistic interaction of two complementary dyes embedded in the polymer matrix. By tuning the monomer and cross‐linker composition, the system achieves balanced white light fluorescence with high transparency and flexibility, showcasing a matrix ...
Jean C. Neto, Ayman Larek, Juan F. Miravet, Minoru Yamaji, Francisco Galindo   +4 more
wiley   +1 more source

Water‐Mediated 1,7‐Palladium Aryl‐to‐Aryl Migration in an Unusual Aryne Trimerization Enables the Synthesis of Multihelicenes with Profoundly Hindered Stereogenic Axes

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, Manuel A. Ortuño, Jesús Castro‐Esteban, Michel Giorgi, Diego Peña, Dolores Pérez, Yoann Coquerel   +6 more
wiley   +1 more source

ISOLATION AND STRUCTURE DETERMINATION OF BISDEMTHYLAAPTAMINE FROM BUNAKEN MARINE PARK SPONGE Aaptos, sp.

Indonesian Journal of Chemistry, 2010
Bisdemethylaaptamine, an alkaloid naphtyridine with molecular weight 200 and formulae molecule C11H8N2O2 has been isolated from Bunaken Marine Park sponge Aaptos sp. Isolation was done by using several stages of column chromatography and high performance
Wilson AR Rombang, Rymond J Rumampuk, Ponis Tarigan, Anthony J Herlt, Lewis N Mander   +4 more
doaj   +1 more source

Rhodium‐Catalyzed Oxidative CH o‐Arylation of s‐Aryltetrazines with Aryl Boronic Acids: One‐Step Selective Access to T‐Shaped and Z‐Shaped Polyaromatics

Advanced Synthesis &Catalysis, EarlyView.
A one‐step regioselective access to T‐Shaped and Z‐Shaped polyaromatics s‐tetrazines by a rhodium‐catalyzed oxidative CH o‐functionalization is reported. Electron‐rich aryl coupling partners display a higher reactivity than electron‐poor aryl, and allow the formation of poly(hetero)aromatic derivatives while avoiding 1,4‐azaphilic addition of the ...
Oumaima Abidi, Gaëlle Divoux, Loris Gelin, Hélène Cattey, Paul Fleurat‐Lessard, Jean‐Cyrille Hierso, Julien Roger   +6 more
wiley   +1 more source

Naphthalimide Derivatives as Film‐Based Fluorescent Sensors for Rapid Detection of Illicit Drugs

Advanced Sensor Research, EarlyView.
Four novel 1,8‐naphthalimide (NI) derivatives for the detection of illicit drugs with different substituents at the 4‐position are reported. Their contrasting fluorescence responses enables five illicit drugs to be distinguished from interferents with a mean classification accuracy of 81%.
Ming Chen, Harrison Stitt, Ronan Chu, Jos C. M. Kistemaker, Ian A. Wood, Paul L. Burn, Ian R. Gentle, Paul E. Shaw   +7 more
wiley   +1 more source

Electrospray ionization mass spectroscopic analysis of human erythrocyte plasma membrane phospholipids. [PDF]

, 1994
Xianlin Han, Richard W. Gross
openalex   +1 more source

Polyoxometalate Imide‐Linked Molecules, Covalent Organic Polymers, and Frameworks: Dimensionality Effects on Supercapacitors Performance

Advanced Sustainable Systems, EarlyView.
This study explores polyoxometalate‐based hybrids with varying dimensionalities, linking molecular, polymeric, and framework structures to supercapacitor performance. The results highlight how structural tuning enhances surface area, porosity, and charge transport, offering insights into designing efficient energy storage materials.
Daria Nowicka, Verónica Montes‐García, Aleksandra Sikora, Violetta Patroniak, Adam Gorczyński, Dawid Pakulski, Artur Ciesielski   +6 more
wiley   +1 more source

Characterization and Determination of the Alkaloid Metabolites of Evodiae fructus in Rat Urine by Liquid Chromatography-Tandem Mass Spectrometry Detection

Molecules, 2011
The lack of authentic standards limits the quantitative analysis of herbal drugs in biological samples. This present work demonstrated a practicable assay of herbs and their metabolites independent of the availability of authentic standards.
Youping Liu, Xin Di, Yin Wang, Qier Mu, Rui Yan   +4 more
doaj   +1 more source

Metabolomics : a tool for studying plant biology [PDF]

, 2005
In recent years new technologies have allowed gene expression, protein and metabolite profiles in different tissues and developmental stages to be monitored.
Gullberg, Jonas
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