Issue 30, 2024

Fabrication of efficient and red-emissive salicylaldehyde Schiff base isomers for multi-scenario information decryption

Abstract

Due to their broad applications in information technology, biochemical sensors, and optoelectronic devices, stimuli-responsive fluorescent materials (SRFMs) have gained significant attention. With their simple synthesis and modification, Schiff bases are considered promising candidates for SRFMs. However, realizing highly efficient luminescence with aggregation-induced emission (AIE) properties as well as stimuli responses is still challenging due to the lack of clear structure–property relationships. In this work, a general strategy for constructing efficient and red-emissive salicylaldehyde Schiff bases is proposed utilizing the triphenylamine (TPA) substitution strategy. Experimental results and theoretical calculations illustrate that all four isomers show a typical AIE effect of the keto-form emission upon photoexcitation and red fluorescence due to the charge-transfer transition from TPA on the salicylaldehyde unit to the keto unit. The single-crystal structure also demonstrates that the introduction of dual TPA leads to appropriate intermolecular interactions, resulting in high-intensity fluorescence. Moreover, with excellent acidochromic properties under both daylight and UV light conditions, p,p-2TPA is successfully applied in steganography and multi-scenario information decryption. This work not only realizes efficient and red-colored luminescence from a simple salicylaldehyde Schiff base skeleton but also provides a strategy for constructing SRFMs with AIE properties.

Graphical abstract: Fabrication of efficient and red-emissive salicylaldehyde Schiff base isomers for multi-scenario information decryption

Supplementary files

Article information

Article type
Paper
Submitted
30 mar 2024
Accepted
12 jun 2024
First published
13 jun 2024

J. Mater. Chem. C, 2024,12, 11394-11401

Fabrication of efficient and red-emissive salicylaldehyde Schiff base isomers for multi-scenario information decryption

W. Zhong, Y. Wu, Y. Lin, S. Li, J. Zhang and X. Cai, J. Mater. Chem. C, 2024, 12, 11394 DOI: 10.1039/D4TC01287A

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