Multiswitchable photoacid-hydroxyflavylium-polyelectrolyte nano-assemblies.
作者： Franziska Gröhn , Alexander Zika
DOI: 10.3762/BJOC.17.17
关键词:
摘要: Light- and pH-responsive nano-assemblies with switchable size structure are formed by the association of a photoacid, anthocyanidin, linear polyelectrolyte in aqueous solution. Specifically, anionic disulfonated naphthol derivatives, neutral hydroxyflavylium, cationic poly(allylamine) used as building blocks for ternary electrostatic self-assembly, forming well-defined supramolecular assemblies tunable sizes 50 to 500 nm. Due network possible chemical reactions anthocyanidin excited-state dissociation photoacid upon irradiation, different ways alter system through external triggering accessible. The trigger effects can be controlled component ratios samples. Dynamic static light scattering (DLS, SLS) ζ-potential measurements were applied study stability particles, information on molecular was gained UV-vis spectroscopy. Isothermal titration calorimetry (ITC) provided thermodynamics interaction forces assembly formation.
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