an ECL layer consisting of a homogenous mixture of a tris ruthenium complex and a polytetrafluoroethylene polymer backbone with pendant sidechains terminating with sulfonic groups, deposited on an etched glass substrate layered with {HEAD ~ a light transparent, electrically conductive, fine grained substance} for supporting and electrochemically activating {TAIL ~ said ECL layer} 
an ECL layer consisting of a homogenous mixture of a tris ruthenium complex and a polytetrafluoroethylene polymer backbone with pendant sidechains terminating with sulfonic groups , deposited on an etched glass substrate layered with { HEAD ~ a light transparent , electrically conductive , fine grained substance } for supporting and electrochemically activating { TAIL ~ said ECL layer }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL