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Manuscript.pdf (1.61 MB)
Visualized Spontaneous Molecular Directed Motion in Solid State
Preprints are manuscripts made publicly available before they have been submitted for formal peer review and publication. They might contain new research findings or data. Preprints can be a draft or final version of an author's research but must not have been accepted for publication at the time of submission.
The real-time monitoring of spontaneous molecular directed motion is a highly important but very challenging task. In this work, a rod-like
aggregation-induced emission (AIE) molecule of
salicylaldehyde 4-butoxyaniline Schiff base (SBA) was deliberately
designed and facilely synthesized, which exhibits unique self-recovery property
from semi-ordered structure to ordered structure alongwith significant fluorescence change after grinding. The monitoring of the
fluorescence change provides rich kinetic information including kinetic order,
rate constants, half-life and apparent activation energy of
the spontaneous molecular directed motion process. Unlike instrumental
analytical methods such as PXRD and AFM, which only give the information of a
stable state of samples, the
fluorescence method provided a new perspective to real-time visualize
spontaneous molecular directed motion in situ in solid state.