Results 71 to 80 of about 599,586 (355)

Moderate Signal Enhancement in Electrospray Ionization Mass Spectrometry by Focusing Electrospray Plume with a Dielectric Layer around the Mass Spectrometer’s Orifice

Molecules
Electrospray ionization (ESI) is among the commonly used atmospheric pressure ionization techniques in mass spectrometry (MS). One of the drawbacks of ESI is the formation of divergent plumes composed of polydisperse microdroplets, which lead to low ...
Zi Qing Chua, Gurpur Rakesh D. Prabhu, Yi-Wun Wang, Chamarthi Maheswar Raju, Krzysztof Buchowiecki, Ochir Ochirov, Decibel P. Elpa, Pawel L. Urban   +7 more
doaj   +1 more source

Identification of fleeting electrochemical reaction intermediates using desorption electrospray ionization mass spectrometry.

Journal of the American Chemical Society, 2015
We report a new method for the mass spectrometric detection of fleeting reaction intermediates in electrochemical reactions utilizing a "waterwheel" working electrode setup. This setup takes inspiration from desorption electrospray ionization (DESI) mass
Timothy A Brown, Hao Chen, R. Zare
semanticscholar   +1 more source

Molecular Nanoarchitectonic Sensing Layer for Analysis of Volatile Fatty Acids in Bioreactor Headspaces Using a Nanomechanical Sensor

Advanced Materials Technologies, EarlyView.
A porous crystalline sensing layer has been developed in conjunction with a nanomechanical sensor for the sensitive detection of volatile fatty acids (VFAs) in admixture at high relative humidity. The sensitive, selective sensor based on supramolecular design improves the economic viability of anaerobic digesters toward a carbon neutral society ...
Subrata Maji, Jan Hynek, Kazushi Nakada, Akiko Hori, Kosuke Minami, Jan Labuta, Mandeep K. Chahal, Daniel T. Payne, Gary J. Richards, Lok Kumar Shrestha, Katsuhiko Ariga, Yusuke Yamauchi, Genki Yoshikawa, Jonathan P. Hill   +13 more
wiley   +1 more source

Glycomics expression analysis of sulfated glycosaminoglycans of human colorectal cancer tissues and non-neoplastic mucosa by electrospray ionization mass spectrometry

Einstein (São Paulo)
Objective To determine the presence of glycosaminoglycans in the extracellular matrix of connective tissue from neoplastic and non-neoplastic colorectal tissues, since it has a central role in tumor development and progression.
Ana Paula Cleto Marolla, Jaques Waisberg, Gabriela Tognini Saba, Daniel Reis Waisberg, Fernando Beani Margeotto, Maria Aparecida da Silva Pinhal   +5 more
doaj   +1 more source

Assignment of polymorphic species of insulin analogues in ion mobility mass spectroscopy

Data in Brief, 2017
Electrospray ionization – ion mobility spectrometry – mass spectrometry (ESI–IMS–MS) allows the identification of protein polymorphic distribution of protein conformers and oligomers.
Maely P. Fávero-Retto, Luiz Henrique Guerreiro, Cássio M. Pessanha, Leonardo C. Palmieri, Luís Maurício T.R. Lima   +4 more
doaj   +1 more source

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

Electrospray ionization (ESI) tutorial

, 2023
Contents: 1.Experimental setup 2.The electrospray process 2.1.Droplet formation 2.2.Droplet fission 2.3.Ion production from the droplets 2.3.1.Ion evaporation mechanism (IEM) 2.3.2.Charged residue mechanism (CRM) 2.3.3.Chain ejection mechanism (CEM) 2.3.4.Competition between mechanisms, hybrid mechanism 3.Typical electrospray ionization mass spectra 4 ...
openaire   +2 more sources

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

Simultaneous Detection of Polar and Nonpolar Molecules by Nano-ESI MS with Plasma Ignited by an Ozone Generator Power Supply

Molecules
We present a simple and cost-effective method for generating a dielectric barrier discharge (DBD) plasma using a commercially available ozone generator power supply.
Yunshuo Tian, Yifan Meng, Richard N. Zare   +2 more
doaj   +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