NOVELTY - An electron activable redox couple precursor composition comprises two compounds.    USE - For use in preparing a redox couple; for photovoltaic cell; or as anti-static agent (claimed) for articles, e.g. papers, textiles, polymers, clothes, inks, waxes, cleaning compositions, softening compositions or agents, petroleum-based compositions, compositions comprising volatile or flammable ingredients, molded objects, shaped articles, various articles comprising a polymer, or part of an electronic device (e.g. computer, television, digital versatile disc, or compact disc player); or as non-aqueous proton donor-acceptors to support ionic conduction in proton conducting membranes.    ADVANTAGE - The composition permits to easily prepare redox couples. It can be easily activated to be converted into a redox couple. It is simple, easy to prepare and to convert into redox couples. It has a good thermal stability, and good solubility in various solvents. It is colorless at concentrations permitting a good conductivity.    DETAILED DESCRIPTION - An electron activable redox couple precursor composition comprises a first compound consisting of compounds of formulae (I), (III), (V), or (VII); and a second compound consisting of compounds of formulae (II), (IV), (VI), or (VIII).    R1-R3=hydrogen atom, 1-12C alkyl, 3-12C cycloalkyl, 1-12C heterocyclyl, 2-8C alkenyl, 2-8C alkynyl, 6-12C aryl, 6-20C aralkyl, 6-20C alkylaryl, 1-12C heteroaryl, or part of polymer chain or network;    R1R2=5-14 membered heterocyclyl in which R3 is absent, a hydrogen atom, or a bond between N and R1 or between N and R2; or 5-14 membered heteroaryl in which R3 is absent, a hydrogen atom, a bond between N and R1 or between N and R2, or is a part of polymer chain or network;    R4-R6=R1-R3, (CH3)2N-, (C2H5)2N-, (C3H7)2N-, (C4H9)2N-, (i-Pr)2N-, CnH2n+1, Ph2P(O)-, Ph2P-, Me2P(O)-, Me2P, Ph2P(S), Me2P(S), Ph3P=N-, Me3P=N-;    R4R5=5-14 membered heterocyclyl in which R6 is absent, a hydrogen atom, or a bond between P and R4 or between P and R5; or 5-14 membered heteroaryl ring in which R6 is absent, a hydrogen atom, a bond between P and R4 or between P and R5, or is a part of polymer chain or network;    R7 and R8=H, CF3, CnF2n+1, -SO2H, -SO2CF3, -NSO2CF3, -SO2CH3, -NSO2CH3, 1-12C alkyl, 6-12C aryl, A, compound of formula (1), or part of polymer chain or network;    A=CnH2n+1, CN, NO2, Ph2P(O)-, Ph2P-, Me2P(O)-, Me2P, Ph2P(S), Me2P(S), Ph3P=N-, Me3P=N-, C6H5CpH2p, CpH2p+1C6H4, CpH2p+1C6H4CnH2n-, CH2=CHCpH2p-, CH2=CHC6H5-, CH2=CHC6H4CpH2p+1-, CH2=CHCpH2pC6H4-;    R9 and R10=hydrogen atom, 1-12C alkyl, 3-12C cycloalkyl, 1-12C heterocyclyl, 2-8C alkenyl, 2-8C alkynyl, 6-12C aryl, 6-20C aralkyl, 6-20C alkylaryl, 1-12C heteroaryl, or part of polymer chain or network;    R9R10=5-7 membered heterocyclyl or heteroaryl;    X-=(FSO2)2N-, (CF3SO2)2N-, (C2F5SO2)2N-, (CF3SO2)3C-, CF3SO3-, CF3COO-, AsF6-, CH3COO-, (CN)2N-, NO3-, 2.3HF, CI-, Br-, I-, PF6-, BF4-, ClO4-, saccharin(obenzoic sulfimide), (C8H16SO2)2N-, or C3H3N2-;    Z=C, N or As, the alkyl, cycloalkyl, heterocyclyl, alkenyl, alkynyl, aryl, aralkyl, alkylaryl, and heteroaryl being optionally substituted with F, Cl, Br, I, OH, 1-6C alkoxy, 1-6C hydroxy alkyl, CF3, SO3-, CnF2n+1, 1-12C alkyl, 1-12C aryl, or A;    n, p=1-48.