The crafting of “smart” materials, which are able to adapt their behaviour in response to environmental triggers, has been a major challenge of soft matter research in the past decade. 1 Amongst these, smart wormlike micelles (SWLMs), 2–5 long flexible nano-structured self-assemblies of surfactant molecules in solution, are a highly promising area of recent development, given the versatility of the materials and simplicity of the design. Minor changes in surfactant ...