Oligoamines, such as a compound of the formula H2NnH in which n is an integer of 2-10, crosslink polymers containing carboxyl functionality unexpectedly faster than conventional diamines such as 1,6-diaminohexane. 1) a matrix of a conductive organic material with one or more singlet states and one or more triplet states, selected from the group: p-conductive and n-conductive materials, c. Its General formula of is aLn2O3.