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