Organic Semiconductor Based on Asymmetric Naphthalene-Thiophene Molecule for Organic Thin Film Transistor

The new asymmetric semiconductor 5-(6-decylnaphthalen-2-yl)-5′-(naphthalene-2-yl)-2,2′bithiophene (NBTND) was synthesized by Suzuki coupling reaction for an organic thin film transistor (OTFT) material. This asymmetric molecule was characterized by H-NMR, IR, HRMS, UV-visible spectroscopy, cyclovoltammetry, thermogravimetric analysis, differential scanning calorimetry. The thin film transistor using new asymmetric semiconductor exhibited the field effect mobility of 2 68×10−2 cm2 V−1 s−1.