Manipulating Lanthanide Luminescence in Metal-Organic Frameworks

Event Name/Location

9th Northeast Corridor Zeolite Association Meeting, Philadelphia, Pennsylvania, December 9, 2005

Presentation Date

12-9-2005

Document Type

Conference Proceeding

Presenters/Authors

Daniel T. de Lill, George Washington UniversityFollow
Christopher L. Cahill, George Washington University

ORCID ID

0000-0003-0891-7246

Description

The inclusion of lanthanides within Metal-Organic Framework (MOF) systems has been explored for a variety of reasons, including high coordination numbers and hard acidic properties. Still more interesting perhaps is the fact that lanthanides possess unique luminescent properties (i.e. – sharp emission peaks), which may lead to a variety of useful applications. However, the process by which lanthanides undergo luminescence is highly inefficient due to forbidden transitions as defined by Laporte selection rules. A common way to circumvent this problem is to sensitize the lanthanide luminescence via an unsaturated organic molecule conjugated to the metal center. We recently published a three-dimensional structure where a conjugated organic molecule, 4,4’-dipyrdiyl, resides in the channels uncoordinated to the metal. We explored the luminescence of this material and have shown that the 4,4’-dipyridyl does indeed sensitize lanthanide luminescence. We have explored and thus report herein the luminescence of GWMOF-6 ([Ln₂(C₆H₈O₄)₃(H₂O)₂]•(C₁₀H₈N₂)) (Ln = Eu³⁺ and Eu³⁺/Tb³⁺ (50/50)), and a Tb-only structure believed to be similar to GWMOF-6. Structural and synthetic details will also be reviewed.

NSUWorks Citation

de Lill, Daniel T. and Cahill, Christopher L., "Manipulating Lanthanide Luminescence in Metal-Organic Frameworks" (2005). Chemistry and Physics Faculty Proceedings, Presentations, Speeches, Lectures. 287.
https://nsuworks.nova.edu/cnso_chemphys_facpres/287