| Issue |
Emergent Scientist
Volume 8, 2024
|
|
|---|---|---|
| Article Number | 1 | |
| Number of page(s) | 18 | |
| Section | Chemistry | |
| DOI | https://doi.org/10.1051/emsci/2023004 | |
| Published online | 25 January 2024 | |
Research Article
Fluorescence emission modification of triphenylamine derivatives by aggregate formation in solution or by mechanical stress in solid state
Université Paris-Saclay,
91400,
Orsay, France
2
Université Paris-Saclay, ENS Paris-Saclay,
DER Chimie,
91190,
Gif-sur-Yvette,
France
* e-mail: ines.mezghani@ens-paris-saclay.fr
Received:
4
May
2023
Accepted:
25
November
2023
Two derivatives of triphenylamine, 4-(diphenylamino)benzaldehyde and 2-(4- (diphenylamino)benzylidene)malononitrile, with acceptor mesomeric groups, an aldehyde moiety and a dicyanovinyl group respectively, were synthesized and found to have aggregation-induced emission (AIE) or aggregation-induced enhanced emission (AIEE) properties in several DMF/H2O mixtures. The size of the formed aggregates was studied with Dynamic Light Scattering (DLS) and a significant change of approximately 200 nm was observed according to the water fraction in DMF. Mechanoluminochromism characteristics in the solid state were also observed. A shift in the emission bands was noticed when comparing the solid before and after grinding, as well as when comparing the crystalline and amorphous form.
Key words: AIE / AIEE / Fluorescence / Mechanoluminochromism / Triphenylamine
© L. Estournet et al., published by EDP Sciences, 2024
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