Issue 48, 2019

Tuning the organic persistent room-temperature phosphorescence through aggregated states

Abstract

Persistent (long-lived) room-temperature phosphorescence (pRTP) materials from a single molecule with different polymorphs are rarely reported and need to be further investigated. In the current work, we have designed and synthesized an asymmetric molecule composed of carbazole and benzofuran based D–A–D′ pRTP materials, i.e., (4-(9H-carbazol-9-yl)phenyl)(dibenzo[b,d]furan-2-yl)methanone (DBF-BZ-Cz). The compound DBF-BZ-Cz exhibits different polymorphs with various pRTP properties, including a difference in their phosphorescence color and lifetimes. The tuning of long-lived phosphorescence of a simple compound through controlling the aggregated state is shown for the first time. The color of its pRTP changed from light-yellow to orange, while its pRTP lifetime shifted from 0.76 to 0.32 s. Furthermore, it is noted that a clear negative correlation between the fractional free volume (FFV) in the crystals and the pRTP lifetime can be drawn out for the ketone derivatives. The current work demonstrates that the pRTP properties can be tuned in one single compound via controlling the aggregated states, which provides a new strategy for the investigation and application of organic long-lived phosphorescence.

Graphical abstract: Tuning the organic persistent room-temperature phosphorescence through aggregated states

Supplementary files

Article information

Article type
Paper
Submitted
08 10月 2019
Accepted
03 11月 2019
First published
06 11月 2019

J. Mater. Chem. C, 2019,7, 15219-15224

Tuning the organic persistent room-temperature phosphorescence through aggregated states

S. K. B. Mane, Y. Mu, E. Ubba, Z. Yang, J. Zhao and Z. Chi, J. Mater. Chem. C, 2019, 7, 15219 DOI: 10.1039/C9TC05491J

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