Evidence of Organic Polymeric Behavior in the Glass Transition of Metal-Organic Frameworks.

The origin of the glass transition is still an open debate, especially for the new class of glasses, formed from metal-organic compounds. High-temperature in situ H Nuclear Magnetic Resonance (NMR) experiments are performed on deuterated samples of ZIF-62 (Zn(CHN)(CHN), with x = 0.25 and x = 0.