Issue 12, 2024

Controllable π–π coupling of intramolecular dimer models in aggregated states

Abstract

π–π coupling as a common interaction plays a key role in emissions, transport and mechanical properties of organic materials. However, the precise control of π–π coupling is still challenging owing to the possible interference from other intermolecular interactions in the aggregated state, usually resulting in uncontrollable emission properties. Herein, with the rational construction of intramolecular dimer models and crystal engineering, π–π coupling can be subtly modulated by conformation variation with balanced π–π and π–solvent interactions and visualized by green-to-blue emission switching. Moreover, it can rapidly respond to temperature, pressure and mechanical force, affording a facile way to modulate π–π coupling in situ. This work contributes to a deeper understanding of the internal mechanism of molecular motions in aggregated states.

Graphical abstract: Controllable π–π coupling of intramolecular dimer models in aggregated states

Supplementary files

Article information

Article type
Edge Article
Submitted
20 Nov 2023
Accepted
17 Jan 2024
First published
02 Feb 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2024,15, 4364-4373

Controllable π–π coupling of intramolecular dimer models in aggregated states

Q. Liao, A. Li, A. Huang, J. Wang, K. Chang, H. Li, P. Yao, C. Zhong, P. Xie, J. Wang, Z. Li and Q. Li, Chem. Sci., 2024, 15, 4364 DOI: 10.1039/D3SC05533G

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