首页|Steric influences on the photophysical properties of pyrene-based derivatives; mechanochromism and their pH-responsive ability
Steric influences on the photophysical properties of pyrene-based derivatives; mechanochromism and their pH-responsive ability
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NSTL
Elsevier
Steric effects have attracted great attention in the fields of synthetic chemistry, spectroscopy, crystallography, as well as surface chemistry. Herein, two pyrene-based compounds with different cyclic ketones acting as a bridge are presented and the influence of the steric effects on the luminescent and molecular packing is investigated. Both luminogens display different optical properties both in dilute and aggregate states. Notably, the pyrenebased cyclopentanone (2) possesses a non-aggregation-induced emission (AIE) feature, whilst pyrene-based cyclohexanone (3) is AIE-active due to steric effects. Furthermore, the mechanochromism properties and pH responsive ability of both pyrenes are investigated by use of fluorescence and XRD technologies. The present work provides insight into how steric effects impact on the molecular conformations and optical properties in these new pyrene-based AIE luminogen systems.
NSTL
Elsevier
