A compound comprising a bisbenzamidazoleperinone of the following formula
wherein each of R
1
, R
2
, R
3
, and R
4
are the same or different and are independently selected from the group consisting of hydrogen, alkyl, aryl, hydrocarbon, which may be optionally substituted or arranged in such a way as to form a cyclic ring which can be either saturated or unsaturated and halogen.