An aromatic–aliphatic AB2 monomer, 5‐[3‐(4‐aminophenyl)propionylamino]isophthalic acid, prepared from 5‐aminoisophthalic acid and 3‐(4‐nitrophenyl)propionic acid, and the corresponding hyperbranched polyamide were fabricated. Applications in piezoelectric immunosensors as supports for antibody immobilization were studied. The introduction of the hyperbranched polyamide greatly increased the amount of immobilized antibody on the electrode and consequently increased the sensitivity of the complete piezoelectric immunosensor. The investigation of the properties of the sensors indicated that the hyperbranched polyamide was a suitable support for antibody/antigen immobilization.
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Liu et al. (2007) studied this question.
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