scholarly journals Rovibronic Signatures of Molecular Aggregation in the Gas Phase: Subtle Homochirality Trends in the Dimer, Trimer and Tetramer of Benzyl Alcohol

2021 ◽  
Author(s):  
Robert Medel ◽  
Ander Camiruaga ◽  
Rizalina Tama Saragi ◽  
Pablo Pinacho ◽  
Cristóbal Pérez ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Gas Phase ◽  
Intermolecular Interactions ◽  
Chemical Processes ◽  
Molecular Aggregation

Molecular aggregation is of paramount importance in many chemical processes, including those in living beings. Thus, characterization of the intermolecular interactions is an important step on its understanding. We describe...

Characterization of 56 airborne persistent organic pollutants (POPs) in gas-phase and particle-phase

2021 ◽  
pp. 1-13
Author(s):  
Li Tan ◽  
Ning Wang ◽  
Yingjian Dong ◽  
Siyuan Li ◽  
Xuehan Wang ◽  
...  
Keyword(s):  
Gas Phase ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Particle Phase

scholarly journals Characterization of gas-phase thorium nitride

2019 ◽  
Vol 150 (14) ◽  
pp. 144304 ◽  
Author(s):  
Anh T. Le ◽  
Sanjay G. Nakhate ◽  
Duc-Trung Nguyen ◽  
Timothy C. Steimle ◽  
Michael C. Heaven
Keyword(s):  
Gas Phase

Methanol–methanol and methanol–water systems: the intermolecular interactions controlling the transition from small clusters to the liquid phase

2017 ◽  
Vol 19 (25) ◽  
pp. 16765-16774 ◽  
Author(s):  
Margarita Albertí ◽  
Anna Amat ◽  
Antonio Aguilar ◽  
Fernando Pirani
Keyword(s):  
Liquid Phase ◽  
Intermolecular Interactions ◽  
Water Systems ◽  
Water Molecules ◽  
Small Clusters

The present paper focuses on the characterization of the properties of methanol and water molecules in gas and liquid enviroments.

ChemInform Abstract: Characterization of Ionized Carbenes in the Gas Phase

ChemInform ◽  
2001 ◽  
Vol 32 (12) ◽  
pp. no-no
Author(s):  
Robert Flammang ◽  
Minh Tho Nguyen ◽  
Guy Bouchoux ◽  
Pascal Gerbaux
Keyword(s):  
Gas Phase ◽  
Abstract Characterization

scholarly journals State-of-the-Art Native Mass Spectrometry and Ion Mobility Methods to Monitor Homogeneous Site-Specific Antibody-Drug Conjugates Synthesis

2021 ◽  
Vol 14 (6) ◽  
pp. 498
Author(s):  
Evolène Deslignière ◽  
Anthony Ehkirch ◽  
Bastiaan L. Duivelshof ◽  
Hanna Toftevall ◽  
Jonathan Sjögren ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Ion Mobility ◽  
State Of The Art ◽  
Native Mass Spectrometry ◽  
Site Specific ◽  
Drug Conjugates ◽  
Conjugation Process ◽  
Antibody Drug

Antibody-drug conjugates (ADCs) are biotherapeutics consisting of a tumor-targeting monoclonal antibody (mAb) linked covalently to a cytotoxic drug. Early generation ADCs were predominantly obtained through non-selective conjugation methods based on lysine and cysteine residues, resulting in heterogeneous populations with varying drug-to-antibody ratios (DAR). Site-specific conjugation is one of the current challenges in ADC development, allowing for controlled conjugation and production of homogeneous ADCs. We report here the characterization of a site-specific DAR2 ADC generated with the GlyCLICK three-step process, which involves glycan-based enzymatic remodeling and click chemistry, using state-of-the-art native mass spectrometry (nMS) methods. The conjugation process was monitored with size exclusion chromatography coupled to nMS (SEC-nMS), which offered a straightforward identification and quantification of all reaction products, providing a direct snapshot of the ADC homogeneity. Benefits of SEC-nMS were further demonstrated for forced degradation studies, for which fragments generated upon thermal stress were clearly identified, with no deconjugation of the drug linker observed for the T-GlyGLICK-DM1 ADC. Lastly, innovative ion mobility-based collision-induced unfolding (CIU) approaches were used to assess the gas-phase behavior of compounds along the conjugation process, highlighting an increased resistance of the mAb against gas-phase unfolding upon drug conjugation. Altogether, these state-of-the-art nMS methods represent innovative approaches to investigate drug loading and distribution of last generation ADCs, their evolution during the bioconjugation process and their impact on gas-phase stabilities. We envision nMS and CIU methods to improve the conformational characterization of next generation-empowered mAb-derived products such as engineered nanobodies, bispecific ADCs or immunocytokines.

Consistent characterization of the electronic ground state of Iron (II) Phthalocyanine from valence and core-shell electron spectroscopy

2021 ◽  
Author(s):  
Jonathan Laurent ◽  
John Bozek ◽  
Marc BRIANT ◽  
Pierre Carcabal ◽  
Denis Cubaynes ◽  
...  
Keyword(s):  
Gas Phase ◽  
Ground State ◽  
Electron Spectroscopy ◽  
Organometallic Compound ◽  
Electronic Ground State ◽  
Core Shell ◽  
Shell Electron ◽  
Phthalocyanine Molecule ◽  
Electronic Ground

We studied the Iron (II) Phthalocyanine molecule in the gas-phase. It is a complex transition organometallic compound, for which, the characterization of its electronic ground state is still debated more...

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