Synthesis of diamine functionalised graphene oxide and its application in the fabrication of electrically conducting reduced graphene oxide/polymer nanocomposite films

Abstract

The focus of research in diamine functionalised graphene oxide (GO) has been limited to the use of diamines either as crosslinker or to achieve simultaneous functionalisation, reduction and stitching of...

In Situ Surfactant Effects on Polymer/Reduced Graphene Oxide Nanocomposite Films: Implications for Coating and Biomedical Applications

“…The polymer molecular weights were within the typical range usually obtained under similar conditions (Table S3). 16,31,32 The two in situ surfactants (KSA and KOA) resulted in similar molecular weight distribution with changing surfactant concentration, that is, an increase in molecular weight with increasing surfactant concentration between 1 and 5 wt %. In the SDS case, however, similar molecular weight distributions were observed at all SDS concentrations (Figure S2).…”

“…The films were thermally annealed at 160 °C for 24 h to reduce GO to electrically conducting reduced GO (rGO). 16,23,31,32 All the films exhibited characteristic D and G peaks at approximately 1350 and 1585 cm −1 , respectively (Table S6). The D and G peaks are attributed to degree of structural defects in the carbon lattice and sp 2 -hybridized carbon cluster in the lattice, respectively.…”

“…All the films yielded similar values of I D / I G of ∼0.8 (Figure S3 and Table S6), confirming the reduction of GO to rGO, in agreement with previously published reports on polymer/rGO nanocomposites. 16,23,32 Confocal laser microscopy imaging of the thermally reduced films (Figure 3) reveals considerable differences between conventional (SDS) and in situ (KSA and KOA) surfactants. The rough features on the films were attributed to rGO sheets.…”

Influence of surface charge of graphene quantum dots on their uptake and clearance in melanoma cells

“…XPS was conducted with a monochromatic Al X-rays (1486.6 eV) at 225 W (15 kV, 15 mA) using a Kratos Axis ULTRA XPS under the operating conditions as reported by us previously. [33][34][35]…”

Development of a pH-sensitive functionalized metal organic framework:in vitrostudy for simultaneous delivery of doxorubicin and cyclophosphamide in breast cancer

“…Besides, the (002) peak in the XRD spectrum of GO-FA, was narrower than that of pristine GO with decreased peak intensity, revealing a more aligned stacking of GO nano sheet and emergence of FA molecules. 65,66 It is reported that the emergence of peak at 18.6 due to certain degree of reduction by DETA and peaks at 31 and 45 belonging to the FA crystal structure during modication. 59,67 So that in XRD image, it is clearly visualized that GO sheets exfoliated by DETA and decorated by FA.…”