Self-healing nanocomposites <i>via</i> N-doped GO promoted “click chemistry”
R. V. Siva Prasanna Sanka, Sravendra Rana, Poonam Singh, Abhishek Kumar Mishra, Pankaj Kumar, Manjeet Singh, Nanda Gopal Sahoo, Wolfgang H. Binder, Gun Jin Yun, Chanwook Park
Abstract
ions, nitrogen-doped graphene-supported copper particles demonstrate a higher reaction yield at room temperature without adding any external ligand/base. In this study, only one component (an azide moiety containing a healing agent) was encapsulated, whereas another component (an alkyne moiety containing a healing agent) was as such (without encapsulation) homogeneously dispersed in a matrix. Triggered capsule rupture then induces the contact of the healing agents with the N-doped graphene-based catalyst and the alkyne molecules dispersed in the matrix, inducing a "click"-reaction, allowing onsite damage to be repaired as determined by mechanical measurements entirely. Tensile measurements were also performed using molecular dynamics (MD) simulations to support the findings. Given the enormous importance of autonomic repair of materials damage, this concept here reports a trustworthy and reliable chemical system with a high level of robustness.