Trapping of Gd(III) Ions by Keplerate Polyanionic Nanocapsules in Water: A 1H Fast Field Cycling NMR Relaxometry Study
Silvia Pizzanelli
1
,
Rustem Zairov
2, 3
,
Maxim Sokolov
4
,
Marco Carlo Mascherpa
1
,
Bulat Akhmadeev
3
,
Asiya Mustafina
2
,
2
Тип публикации: Journal Article
Дата публикации: 2019-07-02
scimago Q1
wos Q3
БС1
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Краткое описание
Polyoxomolybdates of the type [{MoVIMoVI5O21(H2O)6}12{MoV2O4(L)}30](12+30n)–, also referred to as keplerates (Kps), are polyanionic nanocapsules bearing 20 {Mo9O9} pores connected to a central cavity by 20 channels. In solution, they can entrap cations in different sites of their porous structure (in the internal cavity, in the pores, or on the capsule surface) in equilibrium with cations free in solution. The porosity of Kps was previously exploited to prepare nanostructured potential contrast agents through the self-assembly of KpOAc or KpHPO4 (i.e., Kp with L = acetate or hydrogen phosphate) macroanions and Gd(III) cations in water, accompanied by stabilization with F-127 Pluronics. The strongly enhanced water proton relaxivity observed at 20 MHz was postulated to derive from the trapping of Gd(III) aqua ions by the nanocapsules. In the present work, 1H fast field cycling NMR relaxometry allowed this hypothesis to be verified on aqueous suspensions containing either KpOAc or KpHPO4 and Gd(III) in diffe...
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Pizzanelli S. et al. Trapping of Gd(III) Ions by Keplerate Polyanionic Nanocapsules in Water: A 1H Fast Field Cycling NMR Relaxometry Study // Journal of Physical Chemistry C. 2019. Vol. 123. No. 29. pp. 18095-18102.
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Pizzanelli S., Zairov R., Sokolov M., Mascherpa M. C., Akhmadeev B. S., Akhmadeev B., Mustafina A. R., Mustafina A., Calucci L. Trapping of Gd(III) Ions by Keplerate Polyanionic Nanocapsules in Water: A 1H Fast Field Cycling NMR Relaxometry Study // Journal of Physical Chemistry C. 2019. Vol. 123. No. 29. pp. 18095-18102.
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TY - JOUR
DO - 10.1021/acs.jpcc.9b05044
UR - https://pubs.acs.org/doi/10.1021/acs.jpcc.9b05044
TI - Trapping of Gd(III) Ions by Keplerate Polyanionic Nanocapsules in Water: A 1H Fast Field Cycling NMR Relaxometry Study
T2 - Journal of Physical Chemistry C
AU - Pizzanelli, Silvia
AU - Zairov, Rustem
AU - Sokolov, Maxim
AU - Mascherpa, Marco Carlo
AU - Akhmadeev, Bulat S.
AU - Akhmadeev, Bulat
AU - Mustafina, Asiya R.
AU - Mustafina, Asiya
AU - Calucci, Lucia
PY - 2019
DA - 2019/07/02
PB - American Chemical Society (ACS)
SP - 18095-18102
IS - 29
VL - 123
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2019_Pizzanelli,
author = {Silvia Pizzanelli and Rustem Zairov and Maxim Sokolov and Marco Carlo Mascherpa and Bulat S. Akhmadeev and Bulat Akhmadeev and Asiya R. Mustafina and Asiya Mustafina and Lucia Calucci},
title = {Trapping of Gd(III) Ions by Keplerate Polyanionic Nanocapsules in Water: A 1H Fast Field Cycling NMR Relaxometry Study},
journal = {Journal of Physical Chemistry C},
year = {2019},
volume = {123},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://pubs.acs.org/doi/10.1021/acs.jpcc.9b05044},
number = {29},
pages = {18095--18102},
doi = {10.1021/acs.jpcc.9b05044}
}
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Pizzanelli, Silvia, et al. “Trapping of Gd(III) Ions by Keplerate Polyanionic Nanocapsules in Water: A 1H Fast Field Cycling NMR Relaxometry Study.” Journal of Physical Chemistry C, vol. 123, no. 29, Jul. 2019, pp. 18095-18102. https://pubs.acs.org/doi/10.1021/acs.jpcc.9b05044.