| Форма представления | Российские монографии |
| Год публикации | 2020 |
|
Довженко Алексей Павлович, автор
Заиров Рустэм Равилевич, автор
|
| Другие авторы |
Pizzanelli S., Nizameev I., Orekhov A., Arkharova N., Podyachev S., Sudakova S., Mustafina A., Caluccic L. |
|
Довженко Алексей Павлович, автор
|
| Библиографическое описание на языке оригинала |
Zairov R., Pizzanelli S., Dovzhenko A., Nizameev I., Orekhov A., Arkharova N., Podyachev S., Sudakova S., Mustafina A., Caluccic L., Paramagnetic Relaxation Enhancement in Hydrophilic Colloids Based on Gd(III) Complexes with Tetrathia- and Calix[4]arenes // The Journal of Physical Chemistry С ? 2020. (DOI: 10.1021/acs.jpcc.0c00312) |
| Аннотация |
Hydrophilic colloids (PSS-[Ln2(TCAi)2] and PSS-[LnCAi], with i = 1, 2, 3 and Ln=Gd, Tb) were prepared by precipitation of Gd(III) or Tb(III) complexes with tetrathiacalix[4]arenes (TCAi) and calix[4]arenes bearing two 1,3-diketone groups (CAi) from dimethyl formamide to an aqueous solution of poly(sodium 4- tyrenesulfonate) (PSS). Dynamic Light Scattering and Transmission Electron Microscopy demonstrated the formation of nanoparticles coated by the polymer. Luminescence decay measurements on Tb(III)-based colloids allowed a hydration number of 2 and 4 per metal ion to be determined for PSS-[Ln2(TCAi)2] and PSS-[LnCAi] samples, respectively. Longitudinal and transverse water proton relaxivity values measured at 20.8 MHz were remarkably high for the PSS-[GdCAi] colloids, but unexpectedly low for the PSS-[Gd2(TCAi)2] ones. 1H Fast Field Cycling NMR relaxometry was applied to shed light on the origin of the different relaxation enhancement in the investigated systems. Extremely slow exchan |
| Ключевые слова |
Paramagnetic Relaxation, polyelectrolyte nanoparticles, hydration
number, |
| Место издания |
2020 |
| Издательство |
American Chemical Society |
| URL |
10.1021/acs.jpcc.0c00312 |
| Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на эту карточку |
https://repository.kpfu.ru/?p_id=277668 |
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Довженко Алексей Павлович |
ru_RU |
| dc.contributor.author |
Заиров Рустэм Равилевич |
ru_RU |
| dc.contributor.author |
Довженко Алексей Павлович |
ru_RU |
| dc.date.accessioned |
2020-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2020-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2020 |
ru_RU |
| dc.identifier.citation |
Zairov R., Pizzanelli S., Dovzhenko A., Nizameev I., Orekhov A., Arkharova N., Podyachev S., Sudakova S., Mustafina A., Caluccic L., Paramagnetic Relaxation Enhancement in Hydrophilic Colloids Based on Gd(III) Complexes with Tetrathia- and Calix[4]arenes // The Journal of Physical Chemistry С ? 2020. (DOI: 10.1021/acs.jpcc.0c00312) |
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/?p_id=277668 |
ru_RU |
| dc.description.abstract |
Hydrophilic colloids (PSS-[Ln2(TCAi)2] and PSS-[LnCAi], with i = 1, 2, 3 and Ln=Gd, Tb) were prepared by precipitation of Gd(III) or Tb(III) complexes with tetrathiacalix[4]arenes (TCAi) and calix[4]arenes bearing two 1,3-diketone groups (CAi) from dimethyl formamide to an aqueous solution of poly(sodium 4- tyrenesulfonate) (PSS). Dynamic Light Scattering and Transmission Electron Microscopy demonstrated the formation of nanoparticles coated by the polymer. Luminescence decay measurements on Tb(III)-based colloids allowed a hydration number of 2 and 4 per metal ion to be determined for PSS-[Ln2(TCAi)2] and PSS-[LnCAi] samples, respectively. Longitudinal and transverse water proton relaxivity values measured at 20.8 MHz were remarkably high for the PSS-[GdCAi] colloids, but unexpectedly low for the PSS-[Gd2(TCAi)2] ones. 1H Fast Field Cycling NMR relaxometry was applied to shed light on the origin of the different relaxation enhancement in the investigated systems. Extremely slow exchan |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.publisher |
American Chemical Society |
ru_RU |
| dc.subject |
Paramagnetic Relaxation |
ru_RU |
| dc.subject |
polyelectrolyte nanoparticles |
ru_RU |
| dc.subject |
hydration
number |
ru_RU |
| dc.subject |
|
ru_RU |
| dc.title |
Paramagnetic Relaxation Enhancement in Hydrophilic Colloids
Based on Gd(III) Complexes with Tetrathia- and Calix[4]arenes |
ru_RU |
| dc.type |
Российские монографии |
ru_RU |
|
EN 
中文 
ES 
Карта сайта
