Source: https://www.researchgate.net/profile/Fadi_Alakhras2/publication/280972734_In_situ_UVVIS_Spectroscopy_of_Electrochemically_Synthesized_SelenopheneThiophene_Copolymers/links/5ae9eedba6fdcc03cd90b1de/In-situ-UV-VIS-Spectroscopy-of-Electrochemically-Synthesized-SelenopheneThiophene-Copolymers.pdf