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Recent Advances in Mechano-responsive Fluorescent Organic and Organometallic Compounds: Structural Diversity, Phase Transformation and Applications
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  • Chong Wang,
  • Yang Li,
  • Li-Ying Sun,
  • Jian-Gang Yu,
  • Ying-Feng Han
Chong Wang
Northwest University

Corresponding Author:[email protected]

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Yang Li
Northwest University
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Li-Ying Sun
Northwest University
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Jian-Gang Yu
Quzhou University
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Ying-Feng Han
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Abstract

Developing smart luminescent materials, especially stimulus-responsive fluorescent materials, is a goal of great importance, as well as a challenge. Mechano-responsive fluorescence is a property whereby the fluorescence characteristics (i.e., emission color, quantum yield, or lifetime) of a species change as a result of mechanical stimulation. In general, the said mechanical stimulation causes a phase transition in the material, and it simultaneously induces a fresh interaction of the luminous, resulting in a change in the color of the photoluminescence emission. Therefore, the transition of a material from crystalline-to-amorphous, from amorphous-to-crystalline, or from a crystalline to another, as well as the phase transformation of liquid crystals, can contribute to changes in fluorescence emission triggered by a mechanic stimulus. This article briefly reviews the development of such mechano-responsive fluorescent compounds, which consist of organic or organometallic molecules, and the emerging trends in this research field.