Issue 16, 2025

Congested position isomerism enhanced mechanoluminescence of triarylboranes

Abstract

The study of the mechanoluminescence enhancement (MLE) mechanism has been a challenging topic in the field of luminescent materials. Here, we implanted organoboron units with a steric hindrance effect into the molecular backbone and achieved the synthesis of MLE molecules using molecular engineering and crystal engineering. ortho-, meta-, and para-substituted organoboron compounds, namely o-NAB, m-NAB, and p-NAB, were synthesized, where o-NAB showed notable MLE, whereas m-NAB and p-NAB showed decreased fluorescence intensity upon mechanical activation without the assistance of solvent. Our study finds that the steric conformation resulting from different substitution positions plays a decisive role in the fluorescence performance. Grinding releases spatial stress in the o-NAB structure, thereby affecting the process of mechanoresponsive fluorescence transition. Our research provides a congested position strategy for constructing MLE molecules, which not only enhances the fundamental understanding of MLE mechanisms but also bears significant implications for future research.

Graphical abstract: Congested position isomerism enhanced mechanoluminescence of triarylboranes

Supplementary files

Article information

Article type
Paper
Submitted
16 Jan 2025
Accepted
05 Mar 2025
First published
06 Mar 2025

J. Mater. Chem. C, 2025,13, 8095-8103

Congested position isomerism enhanced mechanoluminescence of triarylboranes

Y. Xie, Y. Zhou, Y. Zhang, H. Zhou, Z. Ju, S. Jiang, C. Sun, J. Wu, Q. Zhang and X. Pan, J. Mater. Chem. C, 2025, 13, 8095 DOI: 10.1039/D5TC00180C

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