Naslov
In situ X-ray diffraction monitoring of a mechanochemical reaction reveals a unique topology metal-organic framework

Autori
Katsenis, Athanassios D. ; Puškarić, Andreas ; Štrukil, Vjekoslav ; Mottillo, Cristina ; Julien, Patrick A. ; Užarević, Krunoslav ; Pham, Minh-Hao ; Do, Trong-On ; Kimber, Simon A.J. ; Lazić, Predrag ; Magdysyuk, Oxana ; Dinnebier, Robert E. ; Halasz, Ivan ; Friščić, Tomislav

Izvornik
Nature Communications (2041-1723) 6 (2015); 6662-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Mechanochemistry; in situ powder diffraction; metal-organic framework; topology; katsenite

Sažetak
Chemical and physical transformations by milling are attracting enormous interest for their ability to access new materials and clean reactivity, and are central to a number of core industries, from mineral processing to pharmaceutical manufacturing. While continuous mechanical stress during milling is thought to create an environment supporting non- conventional reactivity and exotic intermediates, such speculations have remained without proof. Here we use in situ, real-time powder X-ray diffraction monitoring to discover and capture a metastable, novel-topology intermediate of a mechanochemical transformation. Monitoring the mechanochemical synthesis of an archetypal metal-organic framework ZIF-8 by in situ powder X-ray diffraction reveals unexpected amorphization, and on further milling recrystallization into a non-porous material via a metastable intermediate based on a previously unreported topology, herein named katsenite (kat). The discovery of this phase and topology provides direct evidence that milling transformations can involve short-lived, structurally unusual phases not yet accessed by conventional chemistry.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA