The Simplest Azabutadienes in Their N-Protonated Forms. Generation, Stability, and Cycloaddition Reactivity in the Gas Phase

1998 ◽  
Vol 63 (15) ◽  
pp. 4889-4897 ◽  
Author(s):  
Rodinei Augusti ◽  
Fabio C. Gozzo ◽  
Luis Alberto B. Moraes ◽  
Regina Sparrapan ◽  
Marcos N. Eberlin
Keyword(s):  
Gas Phase ◽  
Protonated Forms

Isomers and Conformational Barriers of Gas-Phase Nicotine, Nornicotine, and Their Protonated Forms

2014 ◽  
Vol 118 (28) ◽  
pp. 8273-8285 ◽  
Author(s):  
Tomoki Yoshida ◽  
William A. Farone ◽  
Sotiris S. Xantheas
Keyword(s):  
Gas Phase ◽  
Protonated Forms

scholarly journals Diverse mixtures of 2,4-dihydroxy tautomers and O4 protonated conformers of uridine and 2′-deoxyuridine coexist in the gas phase

2015 ◽  
Vol 17 (39) ◽  
pp. 25978-25988 ◽  
Author(s):  
R. R. Wu ◽  
Bo Yang ◽  
C. E. Frieler ◽  
G. Berden ◽  
J. Oomens ◽  
...  
Keyword(s):  
Gas Phase ◽  
Theoretical Studies ◽  
Irmpd Spectroscopy ◽  
Protonated Forms

IRMPD spectroscopy and theoretical studies reveal that a diverse mixture of minor 2,4-dihydroxy and O4 protonated tautomeric conformations of the protonated forms of uridine and 2′-deoxyuridine are populated by ESI.

Residual Gas Reactions in the Electron Microscope: I. Qualitative Observations on the Water Gas Reaction

1968 ◽  
Vol 26 ◽  
pp. 292-293
Author(s):  
Richard E. Hartman ◽  
Roberta S. Hartman ◽  
Peter L. Ramos
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Gas Phase ◽  
Absolute Temperature ◽  
Residual Gas ◽  
Gas Reactions ◽  
Image Position ◽  
The Right ◽  
Water Gas ◽  
Thinning Rate

The action of water and the electron beam on organic specimens in the electron microscope results in the removal of oxidizable material (primarily hydrogen and carbon) by reactions similar to the water gas reaction .which has the form:The energy required to force the reaction to the right is supplied by the interaction of the electron beam with the specimen.The mass of water striking the specimen is given by:where u = gH2O/cm2 sec, PH2O = partial pressure of water in Torr, & T = absolute temperature of the gas phase. If it is assumed that mass is removed from the specimen by a reaction approximated by (1) and that the specimen is uniformly thinned by the reaction, then the thinning rate in A/ min iswhere x = thickness of the specimen in A, t = time in minutes, & E = efficiency (the fraction of the water striking the specimen which reacts with it).

Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

1996 ◽  
Vol 54 ◽  
pp. 154-155
Author(s):  
E. G. Rightor
Keyword(s):  
Excited State ◽  
Polymer Blends ◽  
Gas Phase ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Electronic States ◽  
Core Electron ◽  
Bulk Solids ◽  
Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

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