Optical and photoelectronic properties of a new material: Optoelectronic application

With the aim of studying the optical, electrochemical, and electronic properties of a new porphyrin-based material, we have synthesized a new porphyrinic complex, namely the (4,4 ′ -bipyridine)(meso-tetratrifluoromethylphenylporphyrinato)zinc(II) 4,4 ′ -bipyridine disolvate dihydrate complex with the formula [Zn(TFMPP)(4,4 ′ -bipy)]·2(4,4 ′ -bipy)·2H2O (I). This species is characterized by single-crystal X-ray molecular structure. The optical study is performed by UV–visible absorption and fluorescence spectroscopy. The fluorescence intensity presents an emission in the UV–visible range, indicating that this compound can be used as an optoelectronic material. The optical energy gap is 1.95 eV, and the current–voltage characteristics and impedance spectroscopy measurements have been studied to define the electronic properties of the zinc (II) porphyrin complex. The barrier height φ b is calculated, and the space-charge limited current mechanism is found to control the conductance. The results from the electronic study confirm that our porphyrin derivative can be used for various optoelectronic applications.