Issue |
Emergent Scientist
Volume 8, 2024
|
|
---|---|---|
Article Number | 3 | |
Number of page(s) | 7 | |
Section | Chemistry | |
DOI | https://doi.org/10.1051/emsci/2024001 | |
Published online | 17 April 2024 |
Research Article
Opening the way to greener photochromic and fluorescence studies by using the 6-NO2-BIPS photoswitch
1
Faculté des sciences d’Orsay - Université Paris-Saclay,
France
2
Département de Chimie, École Normale Supérieure Paris-Saclay,
France
* e-mail: mathieu.lordez@ens-paris-saclay.fr
Received:
11
June
2023
Accepted:
23
January
2024
This article investigates the photochromic and fluorescence response of the spiropyran-derived 6-NO2-BIPS photochrome in different media using a green chemistry approach. A red fluorescence emission of the coloured form was observed in all the tested media. The spontaneous back-reaction of the UV-irradiated compound was studied by absorption spectroscopy in 2-Me-THF [t(1/2) = 19.7 s], cyclopentyl methyl ether (CPME) [t(1/2) = 12.6 s] and a water/ethanol/SDS solution [t(1/2) = 146 min]. The latter was found to enable quasi-P type photochrome behavior. Drop-casted and spin-coated thermoplastic polyurethane films were prepared at 1 and 2 mass percentages of 6-NO2-BIPS as a dopant. The films could offer promising results, especially in applications mimicking photochromic glass behavior.
Key words: Photochromism / fluorescence / green chemistry
© H. Seifddine et al., published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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