Surface plasmon resonance based biomimetic sensor for urinary tract infections


ÖZGÜR E. , TOPÇU A. A. , YILMAZ E., DENİZLİ A.

TALANTA, cilt.212, 2020 (SCI İndekslerine Giren Dergi) identifier identifier identifier

Özet

Tailor-made Escherichia coil (E. colt) receptors were created with microcontact imprinted technique and binding events of E. coil were carried out by a surface plasmon resonance (SPR) sensor in aqueous solution and in urine mimic in real time and label-free. N-methacryloyl-(L)-histidine methyl ester (MAH) was selected as a functional monomer to design tailor-made E. coil receptors on the polymeric film and during the formation of the polymeric film on a chip surface, Ag nanoparticles (AgNPs) were entrapped into the polymer mixture in order to lower the detection limit of biomimetic SPR based sensor. The polymeric film was characterized with atomic force microscopy (AFM), scanning electron microscopy (SEM), ellipsometer and contact angle measurements. Limit of detection (LOD) was found 0.57 CFU/mL and feasibility of the biomimetic sensor was investigated in urine mimic.