Optical Evidence for the Assembly of Sensors Based on Reduced Graphene Oxide and Polydiphenylamine for the Detection of Epidermal Growth Factor Receptor

Coatings

Monica Daescu¹  Mihaela Baibarac¹  SzilardN. Fejer² 

[1] National Institute of Materials Physics, Laboratory of Optical Processes in Nanostructured Materials, Atomistilor Street 405A, P.O. Box MG-7, Magurele, 077125 Bucharest, Romania;Pro-Vitam Ltd., Muncitorilor Street 16, 520032 Sfantu Gheorghe, Romania;

关键词: reduced graphene oxide;    polymer;    coatings;    epidermal growth factor receptor;    Raman scattering;    FTIR spectroscopy;   

DOI  :  10.3390/coatings11020258

来源: DOAJ

【 摘 要 】

Using Raman scattering and FTIR spectroscopy, new optical evidence for the assembly of sensors based on reduced graphene oxide (RGO) and polydiphenylamine (PDPA) for the electrochemical detection of the epidermal growth factor receptor (EGFR) are reported. The assembly process of the RGO sheets electrochemical functionalized with PDPA involves the chemical adsorption of 1,4-phenylene diisothiocyanate (PDITC), followed by an incubation with protein G in phosphate buffer (PB) solution and after that the interaction with EGFR antibodies solution. Taking into account the changes reported by Raman scattering and FTIR spectroscopy, a chemical mechanism of the assembling process for this sensor is proposed. The preliminary testing of the electrochemical activity of the sensors based on RGO and PDPA was reported by cyclic voltammetry.

【 授权许可】

Unknown