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http://dx.doi.org/10.12925/jkocs.2009.26.2.5

Synthesis and Electrochemical Spectroscopic Characterization of Benzophenone Derivatives  

Han, Man-So (Department of Chemistry, Daejin University)
Chae, Won-Seok (Department of Chemistry, Daejin University)
Publication Information
Journal of the Korean Applied Science and Technology / v.26, no.2, 2009 , pp. 132-142 More about this Journal
Abstract
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-$OCH_3-4) are higher the energy in the LUMO level, then increasing a band-gap energy$(E_g)$, their $E_gs$ are obtained as a 3.94 eV and 3.59 eV, respectively.
Keywords
Benzophenone; Redox potential; Substituent constant; pseudo-Hammett equation; Band-gap energy;
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