Preferably, {HEAD ~ the concentration} of {TAIL ~ the dendron} in the solution is approximately 1 mM or more 
of
Preferably , { HEAD ~ the concentration } of { TAIL ~ the dendron } in the solution is approximately 1 mM or more
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH