It may be desirable to evaporate the solvent from {HEAD ~ the second solution} to leave {TAIL ~ a film} of the polycrystalline complex prior to photopolymerizing 
to leave
It may be desirable to evaporate the solvent from { HEAD ~ the second solution } to leave { TAIL ~ a film } of the polycrystalline complex prior to photopolymerizing
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH