Facile construction of β-cyclodextrin-immobilized graphene oxide compounds with high-efficient photothermal and fire monitoring

To construct the fast photothermal and fire monitoring in real time, a facile β - cyclodextrin-immobilized graphene oxide (CIGO) was prepared via self-assembly method. Additionally, surface morphology of CIGO with wrinkled structure was used to improve the thermal stability and carbon-forming properties. In the treatment of CIGO by infrared light, a controllable photothermal switch was obtained due to swelling interactions of intermolecular, hydrogen bond and host-guest. Interestingly, graphene oxide (GO) reduction and stable carbon layer of cyclodextrin contributed to high-efficient fire-warning response time (only 0.15 s). Related photothermal and fire early warning mechanisms of CIGO were explored systematically. Overall, this strategy not only provides a facile multifunctional bio-modified GO, but also offers potential applications in smart windows, hazard warning, smart sensing and human-computer interaction.