31663-85-1Relevant academic research and scientific papers
Redox-Active Macrocycles for Organic Rechargeable Batteries
Kim, Dong Jun,Hermann, Keith R.,Prokofjevs, Aleksandrs,Otley, Michael T.,Pezzato, Cristian,Owczarek, Magdalena,Stoddart, J. Fraser
, p. 6635 - 6643 (2017)
Organic rechargeable batteries, composed of redox-active molecules, are emerging as candidates for the next generation of energy storage materials because of their large specific capacities, cost effectiveness, and the abundance of organic precursors, whe
Photophysical Processes in Aromatic Polyimides. 2. Photoreduction of Benzophenone-Containing Polyimide Model Compounds
Hasegawa, Masatoshi,Sonobe, Yoichi,Shindo, Yoichi,Sugimura, Tokuko,Karatsu, Takashi,Kitamura, Akihide
, p. 10771 - 10778 (2007/10/02)
The photochemical kinetic parameters for the model compounds of benzophenone-containing polyimide were determined on the basis of the Stern-Volmer analysis.The quantum yield for the photoreduction, ΦM, in dichloromethane decreased with an increase in the intramolecular charge-transfer (CT) caracter which depends upon the chemical structure of the amine components and the conformation around N-aryl group linkage.This could be explained well by a schematic photophysical mechanism in which the intersystem crossing followed by the hydrogen abstraction competes with the intramolecular CT process followed by effective deactivation.The phosphorescence spectra and lifetime at 77 K and the transient T1 -> Tn absorption and emission spectra of the model compounds at 20 deg C suggested that T1 is of pure (n,?*) state independent of the intramolecular CT character.It was found that benzophenonebisimides have the hydrogen abstraction rate constants no less than that of benzophenone (BP).
