Organic electron transfer mediator and device comprising same

An organic electron-transfer mediator having the structure of Chemical formula 1 below:

• in the formula, R is —H, —F, —Cl, —Br, —I, —NO2, —CN, —CO2H, —SO3H, —NHNH2, —SH, —OH, —NR1R2, an unsubstituted or substituted alkyl group having 1 to 6 carbon atoms, an unsubstituted or substituted alkenyl group having 24 to 6 carbon atoms, or an unsubstituted or substituted aryl group having 6 to 10 carbon atoms, and the R1 and R2 may be each independently H, alkyl having 1 to 3 carbon atoms, or —COOR3, and the R3 may be alkyl having 1 to 6 carbon atoms,
• L (linker) may be one or more selected from the group consisting of a bond, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted ethylene oxide group having 2 to 50 carbon atoms, a substituted or unsubstituted ethylene amine group having 2 to 50 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl or aryloxy group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group or heteroaryloxy group having 5 to 30 carbon atoms.