In 2022,Peng, Sasa; Wang, Huaxin; Ding, Haichang; Fan, Congbin; Liu, Gang; Pu, Shouzhi published an article in Journal of Photochemistry and Photobiology, A: Chemistry. The title of the article was 《A high selective chemosensor for detection of Al3+ based on diarylethene with a hydrazide unit》.Recommanded Product: 2510-22-7 The author mentioned the following in the article:
Al3+ plays an indispensable role in different physiol. processes. However, excess Al3+ is destructive to health. Here, a diarylethene-based fluorescent sensor (1O) was synthesized by attaching a hydrazide group to diarylethene moiety through Schiff base structure. In acetonitrile, 1O displayed excellent selectivity and sensitivity to Al3+. The fluorescence intensity increased by 70-fold and accompanied by the color of the solution changed from dark to blue with the addition of Al3+. Further, the potential response mechanism of 1O toward Al3+ was proposed and verified by 1H NMR titrations and mass spectrometry anal., the stoichiometric ratios of the sensor with Al3+ appeared to be 1:1 with the detection limit of 0.073 μM. In addition, 1O has been successfully applied to the detection of Al3+ in real water samples, and it also has successfully designed as mol. logic circuit and test strips. In the experiment, the researchers used many compounds, for example, 4-Ethynylpyridine(cas: 2510-22-7Recommanded Product: 2510-22-7)
4-Ethynylpyridine(cas: 2510-22-7) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Recommanded Product: 2510-22-7