In this study, 4-phenylthiazol-2-yl-(phenylhydrazono) acetonitrile (PTPA) azo dye was synthesized and studied from optical and electrical point of view. The tautomerization phenomenon of the PTPA dye was clarified using one-dimensional (1D) and two-dimensional (2D) nuclear magnetic resonance (¹HNMR and ¹³C NMR), absorbance (UV-Vis), emission, and Fourier transform infrared spectroscopy (FT-IR). X-ray diffraction (XRD) evaluations were indicated that PTPA in powder and thin films crystallizes in a monoclinic system structure with nonstructural characteristics. Spectrophotometric measurements of absorbance A (λ), transmittance T (λ) and reflectance R (λ) at normal incidence light in the wavelength range 200–2500 nm were used to determine the optical band gap, extinction coefficient, k and refractive index, n. Also, non-linear optical parameters such as the third order non-linear susceptibility, χ⁽³⁾ and nonlinear refractive index, n⁽²⁾ of PTPA have revealed an awe-inspiring switching behavior, implying the possibility of using PTPA in optical switching systems. Finally, the electrical conductivity of the PTPA was shown to increase with rising temperature, indicating that it is a typical organic semiconductor. Mott’s parameters were determined and discussed at low temperatures. Thus, PTPA is a promising organic semiconductor with broad utility potential in organic electronics such as organic light-emitting diodes (OLEDs).

本研究合成了4-苯基噻唑-2-基-(苯基亚肼基)乙腈(PTPA)偶氮染料，并从光学和电学角度进行了研究。使用一维 (1D) 和二维 (2D) 核磁共振（¹ HNMR 和¹³ C NMR）、吸光度（UV-Vis）、发射和傅里叶变换红外光谱（傅立叶变换红外）。X射线衍射（XRD）评估表明，粉末和薄膜中的PTPA以单斜晶系结构结晶，具有非结构特征。使用分光光度法测量 200–2500 nm 波长范围内垂直入射光的吸光度 A (λ)、透射率 T (λ) 和反射率 R (λ)，以确定光学带隙、消光系数 k和折射率n。此外，PTPA 的三阶非线性磁化率χ ⁽³⁾和非线性折射率n ^{(2) 等}非线性光学参数揭示了令人惊叹的开关行为，这意味着在光开关中使用 PTPA 的可能性系统。最后，PTPA的电导率随着温度的升高而增加，表明它是一种典型的有机半导体。莫特的参数是在低温下确定和讨论的。因此，PTPA是一种有前途的有机半导体，在有机电子器件（例如有机发光二极管（OLED））中具有广泛的应用潜力。