• Journal of the Korean Applied Science and Technology
• /
• v.26 no.2
• /
• pp.132-142
• /
• 2009

The benzophenone derivatives(4-$CH_3O$-4'-$NO_2$ and 3,4'-di-$NO_2$) are synthesized by the Fridel-Craft acylation and the nitration method. Electrochemical redox potentials of the benzophenone derivatives (4-$CH_3O$, H, 3-Cl, 3-$NO_2$, 4-$NO_2$, 4-$CH_3O$-4'-$NO_2$, 3,4'-di-$NO_2$) are measured by using cyclic voltammometry. In the relationship of summing Hammett value and redox potential, we find a proportional constant$(\rho)$ that shows a good relation with an electrochemical property and a reactivity of the benzophenone derivatives. The benzophenone substituted with the electron donating groups(4-$OCH_3$ and 4-$OCH_3-4'-NO_2$) are higher the energy in the LUMO level, then increasing a band-gap energy$(E_g)$, their $E_gs$ are obtained as a 3.94 eV and 3.59 eV, respectively.