As shown in FIG 2, the carboxylic acid group of {TAIL ~ TTNPB} is covalently linked to a para hydroxyphenyl amine thus yielding {HEAD ~ the 4 HPTTNPB} 
As shown in FIG 2 , the carboxylic acid group of { TAIL ~ TTNPB } is covalently linked to a para hydroxyphenyl amine thus yielding { HEAD ~ the 4 HPTTNPB }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD