Abstract
AbstractPolymer brush surfaces have various interesting applications; however, to facilitate their formation on surfaces, an initiator ad‐layer is required in advance. In this study, we developed a versatile initiator film that simultaneously meets the standards of uniformity and stability using a simple surface coating strategy. In brief, co‐deposition of dopamine and polyethyleneimine formed a polydopamine/polyethyleneimine (pDP) film, which was then acylated with external α‐bromoisobutyryl bromide. The resultant initiator film, pDP functionalized with initiator (pDPI), showed a homogeneous surface morphology and resisted harsh solvent conditions. The subsequent surface‐initiated polymerization from the developed pDPI initiator layer also formed a thick polymer brush.
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