Issue 8, 2020

First aggregation-induced emission of a Tb(iii) luminophore based on modulation of ligand–ligand charge transfer bands

Abstract

Herein the aggregation-induced emission (AIE) of a Tb(III) complex is reported for the first time. The Tb(III) complex is composed of three anionic ligands (acac: acetylacetonate) and one large hetero-π-conjugated neutral ligand (dpq: dipyrido[3,2-f:2′,3′-h]quinoxaline). The formation of a crystalline J-aggregate of the Tb(III) complex (CJ-Tb(III)) was characterized by X-ray crystal structure analysis and absorption spectra. A crystalline H-aggregate (CH-Tb(III)) was also prepared using the ligand steric effect (tmh: 2,2,6,6-tetramethyl-3,5-heptanedionate). The emission and AIE properties of CJ-Tb(III) were evaluated using emission spectra, lifetime, and quantum yields, whereas CH-Tb(III) did not emit photons. Density functional theory calculations predict that the AIE originates from the modulation of ligand-to-ligand charge transfer bands through J-aggregation.

Graphical abstract: First aggregation-induced emission of a Tb(iii) luminophore based on modulation of ligand–ligand charge transfer bands

Supplementary files

Article information

Article type
Paper
Submitted
09 Січ 2020
Accepted
22 Січ 2020
First published
28 Січ 2020

Dalton Trans., 2020,49, 2431-2436

First aggregation-induced emission of a Tb(III) luminophore based on modulation of ligand–ligand charge transfer bands

Y. Kitagawa, M. Kumagai, T. Nakanishi, K. Fushimi and Y. Hasegawa, Dalton Trans., 2020, 49, 2431 DOI: 10.1039/D0DT00094A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements