The composition of matter 4, wherein the compound is present in {HEAD ~ the film} at from {TAIL ~ 0.1 to 100 mol %} 
at from
The composition of matter 4 , wherein the compound is present in { HEAD ~ the film } at from { TAIL ~ 0.1 to 100 mol % }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL