We have synthesized a  series of single-molecule magnets, [ADyL4]·[solvent], where L is a  naphthyridine-like ligand and A is an alkali metal ion. [ADyL4] is  thermostable, and the geometric structure and magnetic properties remain  unchanged after sublimation. Luminescence measurements at 5-77 K were performed  to understand the relaxation pathway of magnetization. The luminescence spectra  under a magnetic field (0-36 T) for the Dy-SMMs are investigated for the first  time and analyzed with Zeeman formula. These results have now been published  online in <em><a href="http://pubs.rsc.org/en/content/articlelanding/2016/sc/c6sc01157h#!divAbstract">Chem. Sci.</a></em>