المستخلص: |
The spectroscopy and electrochemical behaviour are important characteristics of organic semiconductor, where can be shown the electronic and photonic property of these materials, which are used in several applications for example field effect transistors, solar cells, organic light emitting diodes and electrochromic devices. The new thiophene derivatives 2-(2,3-dihydro-[l,4] diselenino [2,3-c]thiophen-5-yl)-6- (2,3-dihydro-[l,4]diselenino [2,3-c] thiophen-7-yl) pyridine (EDST) has been characterised by several experiments, which are absorption spectroscopy and cyclic voltammetry techniques in dichloromethane as the solvents and tetrabutylammonium hexafluorophosphate (BU4NPF6) 0.1 M as the supporting electrolyte. After the electropolymerisation; the polymer and monomer of EDST have shown disagreement between optical band gap values (the difference is 1.9 eV), due to appeared the conjugation length along the polymer chain
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