Hydrophilic encapsulation of reduced graphite oxide (r-GO) by admicellar polymerization for application in biosensors. (7th October 2019)

• Record Type: Journal Article
• Authors: Li, Feifei; Wang, Luyao; Li, Mengmeng; Lei, Lin
• Is Part Of: New journal of chemistry. Volume 43:Number 41(2019)
• Page Start: 16314
• Page End: 16321
• Publication Date: 2019-10-07
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj03793d
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Hydrophilic encapsulation of reduced graphite oxide (r-GO) was achieved by admicellar polymerization. Abstract : Herein, hydrophilic encapsulation of reduced graphite oxide (r-GO) was achieved by admicellar polymerization. Functional polymer thin films were coated on the r-GO surface for enhancing the water dispersion of r-GO. The morphology was observed by TEM and SEM. Moreover, a PHEMA thin film was coated on the surface of r-GO by admicellar polymerization using a surfactant at low concentration. The percentage of the film coated on r-GO was calculated to be 40 wt% by thermal analysis. FT-Raman has been applied to illustrate that admicellar polymerization is a nondestructive functionalization method. The water contact angles decreased from 105° to 63° after admicellar polymerization; this indicated the successful hydrophilic encapsulation of r-GO. Moreover, r-GO/PHEMA-modified glassy carbon (r-GO/PHEMA/GC) functioned well as an electrochemical biosensor for the detection of hemopexin-like domain of matrix metalloproteinase 14 (PEX-14).