Researchers from the Department of Chemistry, Josipa Sarjanović and Jana Pisk, in collaboration with scientists from the Ruđer Bošković Institute, Marta Razum and Luka Pavić, as well as Bela Fiser from the University of Łódź and the University of Miskolc, have published the paper “Exploring the Gas-Sensing Properties at Room-Temperature and Electrical Behavior of Oxalyl Dihydrazide-Derived Molybdenum Complexes” in the journal Journal of Materials Chemistry C (IF = 5.2).
The study presents the design, synthesis, characterization, and evaluation of novel semiconductive molybdenum coordination complexes derived from an oxalyldihydrazide-based ligand. Of particular interest is their behavior in detecting volatile organic compounds (VOCs), including methanol (MeOH), ethanol (EtOH), propanol (PrOH), and water (H₂O). Exposure to methanol resulted in a six-order-of-magnitude increase in electrical conductivity, highlighting the material’s high sensitivity. Exposure to ethanol caused a five-order-of-magnitude increase, while propanol induced a four-and-a-half-order increase. Further optimization of the experimental setup enabled reproducible response cycles when the material was exposed to methanol vapor. Moreover, the response time for methanol detection was only 40 s, with a recovery time of 230 s, demonstrating the high efficiency of the sensor at room temperature.
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