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Issue 7, 2020
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AIE-active multicolor tunable luminogens: simultaneous mechanochromism and acidochromism with high contrast beyond 100 nm

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Abstract

The development of intelligent luminescent materials, particularly those exhibiting high-contrast (Δλem,max > 100 nm) and multicolor mechanochromic luminescent (MCL) characteristics, is highly desirable but a formidable challenge. In this work, we designed three luminogens with aggregation-induced emission (AIE) features, namely 7PTP-BPXZ, 5PTP-BPXZ and 5,7PTP-BPXZ. The synergistic effect between the folded conformation of the benzo[a]phenoxazine fragment and various intermolecular non-covalent interactions is beneficial for multicolor tunable emission upon external stimuli. Impressively, 7PTP-BPXZ and 5PTP-BPXZ displayed reversible tricolor MCL behavior with high contrast (Δλem,max, 114 nm and 137 nm, respectively). Furthermore, 7PTP-BPXZ possessed acidochromic function with Δλem,max of 132 nm. This is the first report of single-component small organic molecules featuring both multicolor and high-contrast beyond 100 nm mechanochromism and acidochromism.

Graphical abstract: AIE-active multicolor tunable luminogens: simultaneous mechanochromism and acidochromism with high contrast beyond 100 nm

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Supplementary files

Article information


Submitted
17 Apr 2020
Accepted
25 May 2020
First published
26 May 2020

Mater. Chem. Front., 2020,4, 2047-2053
Article type
Research Article

AIE-active multicolor tunable luminogens: simultaneous mechanochromism and acidochromism with high contrast beyond 100 nm

W. Yang, Y. Yang, Y. Qiu, X. Cao, Z. Huang, S. Gong and C. Yang, Mater. Chem. Front., 2020, 4, 2047
DOI: 10.1039/D0QM00247J

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