Morphologies Transformation of BODIPY‐Based Main Chain Supramolecular Polymers Amphiphiles: From Helical Nanowires to Nanosheets

Abstract The aggregate morphologies of 4,4‐difluoro‐4‐bora‐3a,4a‐diaza‐ s ‐indacene (BODIPY) main chain supramolecular polymer amphiphiles (SPA) are tunable by a fine balance of different non‐covalent interactions. When the BODIPY segments and sodium cholate are mixed in aqueous solution, they form SPA by electrostatic attraction and hydrogen‐bonds. This SPA displays helical nanowires' morphology. After the third component dimeric β‐cyclodextrin (β‐CD‐C) is added, the hydrogen bonds between the cholate are substituted by the host–guest interaction between cholate and β‐CD‐C. Therefore, these SPA transform their aggregate morphologies into nanosheets' architecture. Therefore, a simple and effective way to regulate self‐assembly by non‐covalent forces is developed. This supramolecular method may provide an effective way to prepare various nanostructures in aqueous solution and show promising application in the future.