Creating Long-Lived Spin States at Variable Magnetic Field by Means of Photochemically Induced Dynamic Nuclear Polarization

Creating Long-Lived Spin States at Variable Magnetic Field by Means of Photochemically Induced Dynamic Nuclear Polarization Научная публикация

Журнал

The Journal of Physical Chemistry Letters
ISSN: 1948-7185

Вых. Данные

Год: 2012, Том: 3, Номер: 13, Страницы: 1814-1819 Страниц : 6 DOI: 10.1021/jz3005046

Ключевые слова

long-lived spin states, photo-CIDNP, hyperpolarization, NMR

Авторы

Kiryutin Alexey S. ^1,2 , Korchak Sergey E. ^1,3 , Ivanov Konstantin L. ^2,4 , Yurkovskaya Alexandra V. ^2,4 , Vieth Hans-Martin ¹

Организации

1	Institute of Experimental Physics, Freie Universität Berlin, Arnimallee14, D-14195 Berlin, Germany
2	International Tomography Center, Institutskaya 3a, 630090, Novosibirsk, Russia
3	Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, D-10587 Berlin, Germany
4	Novosibirsk State University, Pirogova 2, 630090, Novosibirsk, Russia

We have shown that long-lived spin states (LLS) can be selectively populated by photogenerated chemically induced dynamic nuclear polarization (CIDNP) over a wide range of magnetic fields. Relaxation times of LLS of the β-CH2 protons in N-acetyl histidine and partially deuterated histidine have been measured. Our experiments demonstrate that CIDNP enables creating LLS in the amino acid in a field range of up to a few Tesla and that their lifetimes can be 45 times longer than T1. The advantage of the method is thus two-fold: it allows one to accumulate high levels of spin hyperpolarization and to preserve them for periods of time far exceeding T1. Therefore, photo-CIDNP is a technique suitable for creating long-lived spin order in biologically relevant molecules.

Kiryutin A.S. , Korchak S.E. , Ivanov K.L. , Yurkovskaya A.V. , Vieth H-M.
Creating Long-Lived Spin States at Variable Magnetic Field by Means of Photochemically Induced Dynamic Nuclear Polarization
The Journal of Physical Chemistry Letters. 2012. V.3. N13. P.1814-1819. DOI: 10.1021/jz3005046 OpenAlex

Поступила в редакцию:	24 апр. 2012 г.
Принята к публикации:	18 июн. 2012 г.
Опубликована online:	22 июн. 2012 г.
Опубликована в печати:	5 июл. 2012 г.

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