Dynamic nuclear polarization (DNP) enhances the sensitivity of solid-state NMR (SSNMR)
spectroscopy by orders of magnitude and, therefore, opens possibilities for novel
applications from biology to materials science. This multitude of opportunities implicates a
need for high-performance polarizing agents, which integrate specific physical and chemical
features tailored for various applications. Here, we demonstrate that for the biradical bTbK in
complex with captisol (CAP), a β-cyclodextrin derivative, host–guest assembling offers a …