Heterocyclic imidazo-anthraquinone as an optical sensor: synthesis, characterization and evaluation of the chemosensory ability

Resumo da comunicação eletrónica apresentada na 21st International Electronic Conference on Synthetic Organic Chemistry, 1–30 November 2017; Sciforum Electronic Conference Series, Vol. 21.It is reported the synthesis of one imidazo-anthraquinone, and its photophysical and chemosensory properties. The new derivative was obtained in good yield through a Radziszewski reaction between 1,2-diamino anthraquinone and an heterocyclic aldehyde, characterized by the usual techniques and a detailed photophysical study was undertaken. The evaluation of the compound as a colorimetric chemosensor was carried out by performing spectrophotometric titrations in ACN and ACN/H2O in the presence of relevant organic and inorganic anions, and of alkaline, alkaline-earth and transition metal cations.Thank are due to Fundação para a Ciência e Tecnologia (Portugal) and FEDER-COMPETE for financial support through Centro de Química (UID/QUI/00686/2013 and UID/ QUI/0686/2016), and a PhD grant to R.C.M. Ferreira (SFRH/BD/86408/2012). The NMR spectrometer Bruker Avance III 400 is part of the National NMR Network and was purchased with funds from FCT and FEDER.