Figure 5 - available via license: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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Proposed mechanism for the polymerization reaction (formation of PXC). In the bottom panel indicating a plausible structural motif, the red asterisks indicate cross-links to neighboring polymer chains. Green highlighting indicates allylic or benzylic CH groups. Orange highlighting indicates vinylic CH groups. Yellow highlighting indicates aromatic CH groups. Purple highlighting indicates alkyl bromide motifs. Blue highlighting indicates aliphatic methynes, and red highlighting indicates an aliphatic methyl group achieved through net reduction of an organohalide.
Source publication
An economical and facile method to synthesize a precursor for carbon films and materials has been developed. This precursor can be easily coated onto substrates without binder reagents and then converted into a graphitic-like structure after mild thermal treatment. This approach potentially allows the coating of glass surfaces of different shapes a...
Contexts in source publication
Context 1
... upon the characterization results presented in Figures 2−4, a plausible mechanism for PXC polymerization is presented in Figure 5. The process begins by single-electron transfer from the metallic magnesium to the organohalide substrate, consistent with the mechanism for Grignard activation. ...
Context 2
... number-average molecular weight (M N ) was 50 036 g/mol, and the mass-average molecular weight (M W ) was 121 068 g/ mol. Accordingly, the derived value of molecular weight polydispersity ratio (M w /M n ) is 2.42 due to the branching or cross-linking structure of the polymer PXC, as described in Figure 5. ...
Citations
Technological advancements are leading to an upsurge in demand for functional materials that satisfy several of humankind's needs. In addition to this, the current global drive is to develop materials with high efficacy in intended applications whilst practising green chemistry principles to ensure sustainability. Carbon-based materials, such as reduced graphene oxide (RGO), in particular, can possibly meet this criterion because they can be derived from waste biomass (a renewable material), possibly synthesised at low temperatures without the use of hazardous chemicals, and are biodegradable (owing to their organic nature), among other characteristics. Additionally, RGO as a carbon-based material is gaining momentum in several applications due to its lightweight, nontoxicity, excellent flexibility, tuneable band gap (from reduction), higher electrical conductivity (relative to graphene oxide, GO), low cost (owing to the natural abundance of carbon), and potentially facile and scalable synthesis protocols. Despite these attributes, the possible structures of RGO are still numerous with notable critical variations and the synthesis procedures have been dynamic. Herein, we summarize the highlights from the historical breakthroughs in understanding the structure of RGO (from the perspective of GO) and the recent state-of-the-art synthesis protocols, covering the period from 2020 to 2023. These are key aspects in the realisation of the full potential of RGO materials through the tailoring of physicochemical properties and reproducibility. The reviewed work highlights the merits and prospects of the physicochemical properties of RGO toward achieving sustainable, environmentally friendly, low-cost, and high-performing materials at a large scale for use in functional devices/processes to pave the way for commercialisation. This can drive the sustainability and commercial viability aspects of RGO as a material.
