Twisted Graphene Synthesis via Lamellar Template Polymerization for Optoelectronic Applications

This study explores a room-temperature approach for synthesizing graphene materials through chemical polymerization within a lamellar self-assembled surfactant template. The process involves the polymerization of carbon-based monomers, such as butadiyne or acetylene in sodium bis(2-ethylhexyl) sulfosuccinate (AOT)-stabilized water-in-oil microemulsions at ambient temperature. Transmission electron microscopy images and electron diffraction patterns of the reaction product exhibit high-quality moiré superlattices with well-defined rotational angles, corresponding to highly ordered, twisted graphene layers. Graphene layers with a twist angle have emerged as an intriguing material, offering exceptional electronic, mechanical, and thermal properties, making them highly desirable for next-generation optoelectronic applications, such as flexible transparent conductive films and photonic devices. Conventional methods for producing twisted graphene often require high temperatures, which can limit scalability and increase energy consumption, presenting challenges for sustainable production. This room-temperature solution-phase synthesis method paves the way for an environmentally friendly and cost-effective route to the production of twisted graphene.