RT Conference Proceedings T1 New acyl hydrazones with promising photophysical properties A1 Fernández-Palacios, Sara A1 Vida-Pol, Yolanda A1 Ruiz-Delgado, María del Carmen K1 Isomerización K1 Compuestos orgánicos K1 Química física K1 Estructura molecular AB Hydrazones have become of great interest for the scientific community due to their promising chemical properties and biological activities. In this group of compounds, the acyl or aryl hydrazones, that are Schiff bases composed by the C=N-NH-CO- group are even more interesting because they present biological activities like antimicrobial, anti-HIV, anticancer, etc. Moreover, these compounds also exhibit interesting properties as multi-stimuli responsive materials [1]. In this study the synthesis and the photophysical properties of a series of new substituted acylhydrazones is presented. In order to explore how donor or acceptor units would influence the behavior of these molecules, different substituents have been introduced in the benzoyl ring. Besides, different aromatic rings have been included in their structures (see Figure 1). Thanks to their structural characteristics, these compounds present two types of features: i) they are able to coordinate with metal cations and ii) the photo-induced configurational E/Z isomerization. All acylhydrazones have been obtained in the E conformation and E/Z isomerization is found to take place either photochemically or thermally. Through a joint experimental and theoretical investigation, we have been able to conclude which conformers are the most probable and why in some cases the isomerization process is completed while it is not in others. Interestingly, the structural factors (such as the presence of intramolecular hydrogen bonds) that are affecting the most both the formation of the coordination process and the E/Z conversion have been successfully identified [2]. YR 2022 FD 2022 LK https://hdl.handle.net/10630/24178 UL https://hdl.handle.net/10630/24178 LA eng NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026