Intercalating Oleylamines in Graphite Oxide

Abstract

Graphite oxide has been synthesized from raw graphite particles and been treated with various mass amounts of oleylamine as intercalants to form intercalation compounds. X-ray diffraction patterns reveal that the inter-sheet distances strongly depend on the graphite oxide to oleylamine mass ratios. The equilibrium-like behavior implies diffusion-dominated oleylamine adsorption on graphite oxide in solution and excluded volume intercalations among oleylamine-adsorbed graphite oxide during restacking. The intercalation compounds are soluble in organic solvents, and their applications in the fabrication of transparent and conductive coatings have been demonstrated.

The Importance of Confined Sulfur Nanodomains and Adjoining Electron Conductive Pathways in Subreaction Regimes of Li‐S Batteries

“…The formation of covalent bonds of Poly S or sulfur with OLA was verified by the Fourier-transform infrared (FTIR) spectrum of Poly S-O-rGO, in which the peak at 719 cm −1 assigned to the alkyl CHCH stretching band of OLA disappeared ( Figure S7, Supporting Information). [46][47][48][49] The final Poly S-O-rGO nanocomposite was characterized to elucidate its structure (Figure 2) by employing the following series of analyses: and Poly S are ascribed to the DIB termination that suppresses the growth of sulfur domains. Consistently, the 1 H NMR spectra ( Figure S8, Supporting Information) of Poly S/OLA before and after the reaction at 15 °C revealed the consumption of the vinyl and allylic α-CH 2 protons of OLA to afford Poly S-OLA copolymers.…”

Ultrathin Au nanowires supported on rGO/TiO2 as an efficient photoelectrocatalyst

“…2A is a representative transmission electron microscope (TEM) image that reveals a homogeneous dispersion of TiO 2 nanoparticles on the GO sheets as is also evident from the SEM image ( Fig. 38 During this process, the presence of oleylamine (OA) leads to intercalation 39 and functionalization of GO followed by direct nucleophilic attack of the amine on epoxy group that leads to deoxygenation or reduction of GO. High-resolution TEM micrographs from several regions show that the titania particles are interconnected (Fig.…”

“…X-ray photoelectron spectroscopy (XPS) analysis of rGO/TiO 2 /AuNW samples was performed to confirm the oxidation states and the possible binding mechanism between the Au nanowires and the substrate. 39 Furthermore, C 1s spectrum of rGO/TiO 2 /AuNW can be deconvoluted into several peaks at 284.5 eV (sp 2 C), 285.4 eV (sp 3 C or C-OH or C-N), 286.5 eV (epoxy C-O), 287.7 eV (carbonyl -C=O) and 288.8 eV (carboxylate -COO-) as shown in Fig. S7) confirms chemical modification of GO by nitrogen.…”

A composite of a graphene oxide derivative as a novel sensing layer in an organic field-effect transistor

“…OA-GO was synthesized according to the method reported by Howard Wang et al 16 A GO/H 2 O (50 mg/8.5 mL) suspension was mixed with an OA-ethanol solution. The appropriate OA/GO mass ratios generate amphiphilic properties.…”