Electron transfer and delocalization in mixed-valence monocations of bis- and tris-(diarylamino) derivatives

Electron delocalization;Mixed-valence;Monocation;Triarylamine;Electron transfer

Odom, Susan A. ; Chemistry and Biochemistry

University:Georgia Institute of Technology

Department:Chemistry and Biochemistry

关键词: Electron delocalization;    Mixed-valence;    Monocation;    Triarylamine;    Electron transfer;   

Others  :  https://smartech.gatech.edu/bitstream/1853/26609/1/odom_susan_a_200812_phd.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

To better understand the optical and electronic properties of thiophene- and pyrrole-based organic compounds on a molecular level, several aromatic compounds and their corresponding monocations were analyzed by a variety of solution-based spectroscopic techniques.The derivatives were initially synthesized using palladium-catalyzed amination reactions, condensation reactions, Horner-Emmons reactions, and Stille coupling reactions.Once isolated, the neutral compounds were analyzed by UV-visible-NIR absorption spectroscopy, fluorescence spectroscopy, cyclic voltammetry, and / or differential pulse voltammetry.Monocations were generated by chemical oxidation and were analyzed by visible-NIR absorption spectroscopy and electron paramagnetic resonance spectroscopy.By quantifying the extent of the electron-donor abilities of some chromophores and the electron delocalization of positive charge in the monocations, a more thorough understanding of the optical and electronic properties of the compounds was obtained.