Electrodesorption from single-crystal electrodes: analysis by differential electrochemical mass spectrometry

1991 ◽  
Vol 63 (1) ◽  
pp. 44-48 ◽  
Author(s):  
Thomas. Hartung ◽  
Udo. Schmiemann ◽  
Inge. Kamphausen ◽  
Helmut. Baltruschat
Keyword(s):  
Mass Spectrometry ◽  
Single Crystal ◽  
Differential Electrochemical Mass Spectrometry

scholarly journals A Covalent Organic Cage Compound Acting as a Supramolecular Shadow Mask for the Regioselective Functionalization of C60

2020 ◽  
Author(s):  
Viktoria Leonhardt ◽  
Stefanie Fimmel ◽  
Ana-Maria Krause ◽  
Florian Beuerle
Keyword(s):  
Mass Spectrometry ◽  
Single Crystal ◽  
High Selectivity ◽  
Shadow Mask ◽  
X Ray Diffraction ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Cage Compound ◽  
Vis Spectroscopy ◽  
Regioselective Functionalization

<div><div><div><p>A trigonal-bipyramidal covalent organic cage compound serves as an efficient host to form stable 1:1-complexes with C60 and C70. Fullerene encapsulation has been comprehensively studied by NMR and UV/Vis spectroscopy, mass spectrometry as well as single-crystal X-ray diffraction. Exohedral functionalization of encapsulated C60 via threefold Prato reaction revealed high selectivity for the symmetry-matched all-trans-3 addition pattern.</p></div></div></div>

scholarly journals Measurements of the Diffusion of Iron and Carbon in Single Crystal NiAl using Ion Implantation and Secondary Ion Mass Spectrometry

1998 ◽  
Vol 527 ◽  
Author(s):  
R. J. Hanrahan ◽  
S. P. Withrow ◽  
M. Puga-Lambers
Keyword(s):  
Mass Spectrometry ◽  
Ion Implantation ◽  
Single Crystal ◽  
Secondary Ion Mass Spectrometry ◽  
Tracer Diffusion ◽  
Dynamic Strain ◽  
Enhanced Diffusion ◽  
Ion Mass Spectrometry ◽  
Impurity Elements ◽  
Secondary Ion

ABSTRACTClassical diffusion measurements in intermetallic compounds are often complicated by low diffusivities or low solubilities of the elements of interest. Using secondary ion mass spectrometry for measurements over a relatively shallow spatial range may be used to solve the problem of low diffusivity. In order to simultaneously obtain measurements on important impurity elements with low solubilities we have used ion implantation to supersaturate a narrow layer near the surface. Single crystal NiAl was implanted with either 12C or both 56Fe and 12C in order to investigate the measurement of substitutional (Fe) versus interstitial (C) tracer diffusion and the cross effect of both substitutional and interstitial diffusion. When C alone was implanted negligible diffusion was observed over the range of times and temperatures investigated. When both Fe and C were implanted together significantly enhanced diffusion of the C was observed, which is apparently associated with the movement of Fe. This supports one theory of dynamic strain aging in Fe alloyed NiAl.

Building a Differential Electrochemical Mass Spectrometry (DEMS): A Powerful Toll for Investigation of (photo)Electrochemical Processes

2021 ◽  
Vol MA2021-01 (46) ◽  
pp. 1873-1873
Author(s):  
Adriana Queiroz ◽  
Wanderson Oliveira da Silva ◽  
Daniel Cantane ◽  
Igor Messias ◽  
Maria Rodrigues Pinto ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Differential Electrochemical Mass Spectrometry ◽  
Electrochemical Processes
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