Enhancing Luminescence in Lanthanide Coordination Polymers Through Dilution of Emissive Centers

Authors

Jeffrey D. Einkauf, Florida Atlantic University
Kelly L. Rue, Florida Atlantic University
Heather A. Ten Hoeve, Florida Atlantic University
Daniel T. de Lill, Florida Atlantic UniversityFollow

ORCID

0000-0003-0891-7246

Document Type

Article

Publication Title

Journal of Luminescence

ISSN

0022-2313

Publication Date

5-2018

Keywords

Lanthanide, Antenna effect, Coordination polymer, Doping

Abstract

A Ln-adipate metal-organic framework templated with 4,4′-bipyridine (GWMOF-6) was synthesized with Eu(III) or Tb(III) ions with various concentrations of optically inert Gd(III) ion in order to evaluate the effects of diluting the emissive metal center on the efficiency of luminescence. The doping ratios of Ln:Gd (Ln = Eu or Tb) showed that of the ratios studied, the 50:50 system had among the highest quantum yields (Eu = 3.9%, Tb = 7.6%) with increasing lifetimes as Gd(III) concentration increased. A 50:50 Eu:Tb system was also synthesized and showed to be more efficient than the Eu:Gd systems (Φ = 15.3%), with an exceptionally high energy transfer efficiency (80%) from the ⁵D₄ state of the Tb(III) ion to the ⁵D₁ and ⁵D₀ energy levels of the Eu(III) ion.

DOI

10.1016/j.jlumin.2018.01.045

Volume

197

First Page

412

Last Page

417

Comments

©2018 Elsevier B.V. All rights reserved.

NSUWorks Citation

Einkauf, J. D., Rue, K. L., Ten Hoeve, H. A., & de Lill, D. T. (2018). Enhancing Luminescence in Lanthanide Coordination Polymers Through Dilution of Emissive Centers. Journal of Luminescence, 197, 412 - 417. https://doi.org/10.1016/j.jlumin.2018.01.045. Retrieved from https://nsuworks.nova.edu/cnso_chemphys_facarticles/253