Autoluminescent Metal–Organic Frameworks (MOFs): Self-Photoemission of a Highly Stable Thorium MOF

A novel thorium­(IV) metal–organic framework (MOF), Th­(2,6-naphtalenedicarboxylate)2, has been synthesized via solvothermal reaction of thorium nitrate and 2,6-naphtalendicarboxilyc acid. This compound shows a new structural arrangement with an interesting topology and an excellent thermal resistance, as the framework is stable in air up to 450 °C. Most notably, this MOF, combining the radioactivity of its metal center and the scintillation property of the ligand, has been proven capable of spontaneous photon emission.