Issue 31, 2020

Bright mechanoluminescent luminogens even in daylight through close intermolecular interaction with the characteristic of hybridized local and charge transfer (HLCT)

Abstract

The study of mechanoluminescence (ML) has attracted much attention for its widespread applications. Until now, organic ML luminogens are still very scarce, especially those with bright emissions. Herein, three donor–acceptor (D–A) molecules with triphenylamine, phenothiazine and phenoxazine as electron donors and p-fluorophenylcarbonyl as an electron acceptor are designed and synthesized via a facile approach with the Friedel–Crafts reaction in one step, named FCO-TPA, FCO-CzS and FCO-CzO, which exhibit high emission quantum yields both in solution and solid states. The fluorescence solvatochromic experiments and theoretical calculations prove their unique HLCT state characteristics, which can largely enhance the excited state energy utilization. Accordingly, very bright mechanoluminescence (ML) even in daylight is achieved in FCO-TPA with non-centrosymmetric molecular arrangement and close intermolecular interactions.

Graphical abstract: Bright mechanoluminescent luminogens even in daylight through close intermolecular interaction with the characteristic of hybridized local and charge transfer (HLCT)

Supplementary files

Article information

Article type
Paper
Submitted
03 mar 2020
Accepted
18 mai 2020
First published
19 mai 2020

J. Mater. Chem. C, 2020,8, 10852-10858

Bright mechanoluminescent luminogens even in daylight through close intermolecular interaction with the characteristic of hybridized local and charge transfer (HLCT)

D. Li, J. Yang, Y. Wang, X. Li, D. Zhu, M. Fang and Z. Li, J. Mater. Chem. C, 2020, 8, 10852 DOI: 10.1039/D0TC01095B

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