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AIE-active smart cyanostyrene luminogens: polymorphism-dependent multicolor mechanochromism

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Abstract

Multicolor mechanochromic luminescent (MCL) materials are promising candidates in fundamental science and practical applications. In this paper, a series of novel smart luminescent compounds based on a cyanostyrene unit, NAIF, NA-15C5, NAPM, NAIP and NAPF, have been developed. NAIF, NAPM, NAPF and NAIP all exhibit aggregation-induced emission (AIE) characteristics and individually show red, orange, yellow and green emission in their aggregated state. Luminogens NA-15C5 and NAPM display reversible tricolor-changing MCL behaviors. NAIF and NAIP show bicolor switching mechanochromic phenomena. Additionally, different molecular packing modes of two crystalline polymorphs, NAPM-y and NAPM-o with bright yellow and orange luminescence color, rationally explain the tricolor-changing mechanochromic mechanism. Moreover, luminogen NAIP can be used as ink-free rewritable paper.

Graphical abstract: AIE-active smart cyanostyrene luminogens: polymorphism-dependent multicolor mechanochromism

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Publication details

The article was received on 19 Oct 2017, accepted on 04 Dec 2017 and first published on 04 Dec 2017


Article type: Paper
DOI: 10.1039/C7TC04773H
Citation: J. Mater. Chem. C, 2018, Advance Article
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    AIE-active smart cyanostyrene luminogens: polymorphism-dependent multicolor mechanochromism

    W. Yang, C. Liu, S. Lu, J. Du, Q. Gao, R. Zhang, Y. Liu and C. Yang, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C7TC04773H

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