Abstract
A new organic compound PyStBu was designed and synthesized, which exhibits successive solid-state emission changes induced by heating and DCM vapours fuming. Intermolecular interaction changes or heat-induced crystal surface layer changes may be reasonable for the emission change of Cc-form after heating. In addition, crystal packing changes may be the dominant reason for different photophysical properties of Cc-H-form and P-1-form after DCM fuming. These observations provide reference for tuning property of organic solid-state luminescence materials and designing smart crystal luminescent materials. In addition, PyStBu exhibits aggregation-induced emission enhancement (AIEE) property with interesting “on–off–on” optical switching behavior.
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