Issue 13, 2024

Anti-Kasha's rule in phenothiazine derivatives and metal–organic frameworks: mechanism investigation and application in hypochlorite detection

Abstract

In recent years, some organic molecules have been found to produce luminescence that does not obey Kasha's rule in the aggregate state. This luminescence often originates from upper and the lowest energy-excited states. However, developing more single-component compounds with anti-Kasha's rule emissions and expanding their applications remains challenging. Herein, two phenothiazine derivatives are found to have anti-Kasha's rule luminescence in the aggregate state. Studies on photophysical properties, single-crystal structures, femtosecond transient absorption (fs-TA), and theoretical calculations indicate that the restriction of intramolecular motions (RIM) is the mechanism for the multiwavelength emission. Furthermore, a new luminescent Cd MOF, Cd-PTZ-db, which inherits the luminescence and structural characteristics of the phenothiazine derivative ligand, demonstrates great potential in the detection of hypochlorite (ClO). This work gains a deeper understanding of the effect of RIM on luminescence in the aggregated state, and once again proves that the rigid structures of MOFs can work as the foundation for developing advanced solid-state emissive materials and other practical applications.

Graphical abstract: Anti-Kasha's rule in phenothiazine derivatives and metal–organic frameworks: mechanism investigation and application in hypochlorite detection

Supplementary files

Article information

Article type
Research Article
Submitted
03 Apr 2024
Accepted
16 May 2024
First published
17 May 2024

Inorg. Chem. Front., 2024,11, 3984-3991

Anti-Kasha's rule in phenothiazine derivatives and metal–organic frameworks: mechanism investigation and application in hypochlorite detection

T. Wu, M. Lei, F. Ge, Y. Liu, M. Xia, L. Yang and H. Zheng, Inorg. Chem. Front., 2024, 11, 3984 DOI: 10.1039/D4QI00838C

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