Chemistry and Physics Faculty Articles

Title

Exploring Lanthanide Luminescence in Metal-Organic Frameworks:  Synthesis, Structure, and Guest-Sensitized Luminescence of a Mixed Europium/Terbium-Adipate Framework and a Terbium-Adipate Framework

Document Type

Article

Publication Date

5-1-2010

Publication Title

Inorganic Chemistry

ISSN

0020-1669

Volume

46

Issue/No.

10

First Page

3960

Last Page

3965

Abstract

Two lanthanide-organic frameworks were synthesized via hydrothermal methods. Compound 1 ([(Eu,Tb)(C6H8O4)3(H2O)2]•(C10H8N2), orthorhombic, Pbcn, a = 21.925(2) Å, b = 7.6493(7) Å, c = 19.6691(15) Å, α = β = γ = 90°, Z = 4) takes advantage of the similar ionic radii of the lanthanide elements to induce a mixed-lanthanide composition. Compound 2 ([Tb2(C6H8O4)3(H2O)2]•(C10H8N2), orthorhombic, Pbcn, a = 21.866(3) Å, b = 7.6101(10) Å, c = 19.646(3) Å, α = β = γ = 90°, Z = 8) is the terbium-only analogue of compound 1. Solid-state measurements of their luminescence behavior demonstrate that the neutral guest molecule (4,4‘-dipyridyl) residing in the extraframework channels is successful in sensitizing lanthanide ion emission. In compound 1, columinescence occurs, and both lanthanide ions show emission. Additionally, quantum yield and lifetime measurements support the premise that the Tb3+ center is also acting to sensitize the Eu3+, effectively enhancing Eu3+ emission.

Comments

©2007 American Chemical Society

Additional Comments

NSF grant #s: DMR-0348982, DMR0419754

ORCID ID

0000-0003-0891-7246

DOI

10.1021/ic062019u

This document is currently not available here.

Peer Reviewed

Find in your library

Share

COinS