Dergi makalesi Açık Erişim

Surface arrangement dependent selectivity of porphyrins gas sensors

2017    Magna, Gabriele; Zor, Sule Dinc; Catini, Alexandro; Capuano, Rosamaria; Basoli, Francesco; Martinelli, Eugenio; Paolesse, Roberto; Di Natale, Corrado

Optimal design of sensor arrays requires the control of selectivity of each sensor elements. To this regard, porphyrins are a versatile molecular platform, whose selectivity can be changed with a suitable synthesis. Besides the molecular structure, the sensor properties are also influenced by the mutual arrangement of porphyrins onto the sensor surface. To take advantage of this additional feature we considered porphyrins coated ZnO nanoparticles prepared following two methods In the former, porphyrins coat the surface of ZnO nanoparticles previously grown by hydrothermal route, while the second method is a one-pot synthesis where porphyrins are added to the nanoparticles precursor solution. The two approaches lead to different morphologies evidenced by the shape of the oxide nanoparticles.