Zika A, Gröhn F (2021)
Publication Type: Journal article
Publication year: 2021
Book Volume: 17
Pages Range: 166-185
DOI: 10.3762/BJOC.17.17
Light- and pH-responsive nano-assemblies with switchable size and structure are formed by the association of a photoacid, anthocyanidin, and a linear polyelectrolyte in aqueous solution. Specifically, anionic disulfonated naphthol derivatives, neutral hydroxyflavylium, and cationic poly(allylamine) are used as building blocks for the ternary electrostatic self-assembly, forming welldefined supramolecular assemblies with tunable sizes of 50 to 500 nm. Due to the network of possible chemical reactions for the anthocyanidin and the excited-state dissociation of the photoacid upon irradiation, different ways to alter the ternary system through external triggering are accessible. The structure and trigger effects can be controlled through the component ratios of the samples. Dynamic and static light scattering (DLS, SLS) and potential measurements were applied to study the size and the stability of the particles, and information on the molecular structure was gained by UV-vis spectroscopy. Isothermal titration calorimetry (ITC) provided information on the thermodynamics and interaction forces in the supramolecular assembly formation.
APA:
Zika, A., & Gröhn, F. (2021). Multiswitchable photoacid-hydroxyflavylium-polyelectrolyte nano-assemblies. Beilstein Journal of Organic Chemistry, 17, 166-185. https://dx.doi.org/10.3762/BJOC.17.17
MLA:
Zika, Alexander, and Franziska Gröhn. "Multiswitchable photoacid-hydroxyflavylium-polyelectrolyte nano-assemblies." Beilstein Journal of Organic Chemistry 17 (2021): 166-185.
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