Thermoresponsive, spin-labeled hydrogels as separable DNP polarizing  agents.
In this work, we present thermoresponsive, spin-labeled hydrogels that bear great potential for applications in dynamic nuclear polarization (DNP). In our approach, the water and other polarized molecules are efficiently separated from the radicals needed for DNP by a thermally induced collapse of a polymer network resulting in a prolonged lifetime of the hyperpolarization.
Dollmann
Björn C
BC
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Junk
Matthias J N
MJ
Drechsler
Michelle
M
Spiess
Hans W
HW
Hinderberger
Dariush
D
Münnemann
Kerstin
K