The synthesis of new chromogenic p (o,m,p carboxylazo)Calixarenes derivatives through the couping of diazotized o,m,p aminobenzene carboxylic acid and calixarenes was described.Their structures were comfirmed by IR, 1...The synthesis of new chromogenic p (o,m,p carboxylazo)Calixarenes derivatives through the couping of diazotized o,m,p aminobenzene carboxylic acid and calixarenes was described.Their structures were comfirmed by IR, 1H NMR and elemental analysis.Their chromogenic properties and UV Vis absorption spectra were investigated under different pH conditions.Experimental results show that the synthesized derivatives can be used as new indicators and host展开更多
文摘The synthesis of new chromogenic p (o,m,p carboxylazo)Calixarenes derivatives through the couping of diazotized o,m,p aminobenzene carboxylic acid and calixarenes was described.Their structures were comfirmed by IR, 1H NMR and elemental analysis.Their chromogenic properties and UV Vis absorption spectra were investigated under different pH conditions.Experimental results show that the synthesized derivatives can be used as new indicators and host