PLEMs definition
PLEMs means (a) Polyfluorenes; (b) solid compositions containing Polyfluorenes in an amount of at least one percent (1%) by weight; and (c) solutions containing “Polyfluorenes” including formulations for ink jet printing; for the purposes of this definition “Polyfluorenes” means any polymer having substituted or unsubstituted 2,7-linked fluorene mer units but does not include polymer where all the fluorene units are spirofluorenes or indenofluorenes.