A portable electronic device including a first section, a second section and a connecting section. Compounds in accordance with formula possess good catalytic properties, such that when they are employed in a process in accordance with the present invention, they are capable of activating a source of oxygen and promoting the oxidation of an alkane at mild reaction temperatures. The covering layer is disposed on the dielectric main body and has a pattern area defined thereon. Suitable metallic objects include those made of ferromagnetic metal and diamagnetic or paramagnetic metal.