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@ARTICLE{Zarzana:1009001,
author = {Zarzana, Christopher A. and McAlpine, Jack and Wilden,
Andreas and Hupert, Michelle and Stärk, Andrea and Iqbal,
Mudassir and Verboom, Willem and Vandevender, Aspen N. and
Mincher, Bruce J. and Groenewold, Gary S. and Modolo,
Giuseppe},
title = {{G}amma {R}adiolysis of {P}henyl-{S}ubstituted {TODGA}s:
{P}art {II}},
journal = {Solvent extraction and ion exchange},
volume = {41},
number = {5},
issn = {0736-6299},
address = {Philadelphia, PA},
publisher = {Taylor $\&$ Francis},
reportid = {FZJ-2023-02570},
pages = {582-605},
year = {2023},
abstract = {The radiolytic degradation chemistry of three phenylated
analogs of N,N,N’,N’-tetraoctyl diglycolamide (TODGA)
was investigated:
2-(2-(di-n-octylamino)-2-oxoethoxy)-N,N-di-n-octyl-2-phenylacetamide
(PhTODGA), which has a phenyl substituent bound to a central
methylene,
2-(2-(di-n-octylamino)-2-oxo-1-phenylethoxy)-N,N-di-n-octylpropanamide
(PhMeTODGA), which also contains a methyl substituent bound
to the methylene on the other side of the ether moiety, and,
2-(2-N-n-hexyl-N-phenylamino)-2-oxoethoxy)-N-n-hexyl-N-phenylacetamide
(DHDPDGA), which has phenyl substituents located on the
amide groups instead of the central methylenes. In Part II
of this series of papers radiolytic degradation products
were identified after separation with liquid chromatography
by High Resolution, Accurate-Mass mass spectrometry and
collision-induced dissociation. At least twenty-two
radiolytic degradation products were identified for PhTODGA,
twenty-nine for PhMeTODGA, and over three dozen for DHDPDGA.
The suite of radiolytic degradation products of these three
investigated ligands was significantly larger than has been
reported for previously studied diglycolamides, owing to
their asymmetric nature, and to the identification of
several new degradation mechanisms, including addition of
methyl, hydroxyl, and nitrogen oxide radicals, that have not
been previously reported for diglycolamides. Degradation
products that contained addition of a NO2 or NO3 group were
particularly prevalent for DHDPDGA, likely due to the phenyl
side-groups. Several of these newly observed mechanisms do
not appear to depend on the presence of the phenyl groups,
suggesting these novel mechanisms may apply to other
diglycolamides},
cin = {IEK-6 / ZEA-3},
ddc = {540},
cid = {I:(DE-Juel1)IEK-6-20101013 / I:(DE-Juel1)ZEA-3-20090406},
pnm = {1412 - Predisposal (POF4-141) / SACSESS - Safety of
ACtinide Separation proceSSes (323282) / GENIORS - GEN IV
Integrated Oxide fuels recycling strategies (755171)},
pid = {G:(DE-HGF)POF4-1412 / G:(EU-Grant)323282 /
G:(EU-Grant)755171},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001023475100001},
doi = {10.1080/07366299.2023.2221290},
url = {https://juser.fz-juelich.de/record/1009001},
}