Triple-stimuli responsive polymers with fine tuneable magnetic responses

摘要: The formation of multi-stimuli responsive polymers exhibiting magnetic, pH and light sensitivity is reported. After quaternization tertiary amines along poly(2-(N,N-dimethylamino) ethyl methacrylate) (PDMAEMA) with varied alkyl benzyl halides, a series tetrahalogenoferrate(III) salts were obtained by anion metathesis, conferring tailored high magnetic responses. Experimental theoretical Raman analyses allowed one to distinguish between the different anions present in materials. This strategy was then implemented multi-responsive compounds, using random copolymers that incorporate various amounts DMAEMA (∼40, 65 80%) diazobenzene units. Partial or total dimethylamino end groups (10, 50 100%) followed exchange afforded magnetic-responsive copolymers, as evidenced their susceptibility. Free ternary amino moieties further brought sensitivity, giving rise triple-stimuli simple rapid procedure offers opportunity fine tune properties remotely controlled smart devices.