Structural changes in photoswitchable dendrimer-azodye systems
Tuning the size and shape of supramolecular particles in solution with narrow size distribution is considered one of the most difficult tasks in the area of self-assembly. In this project, we will use electrostatic self-assembly to trigger the morphology and responsiveness of particles in the solution. Small-angle neutron scattering (SANS) will be used to reveal the assembly structure, that is, their size and shape and internal structure. Light and pH will be applied as external triggers and the structural response will be elucidated. We will focus on a model system consisting of cationic PAMAM dendrimers of different generations (G2, G4, and G8) assembling with the anionic azo dye Acid Yellow 38 in an aqueous acidic medium at ambient temperature, including studying the effect of component ratio and the consideration of reversibility. This thorough study will allow gaining a fundamental understanding of the nanoscale morphology control in electrostatic self-assembly.
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Mohit Agarwal; GROEHN Franziska; SCHWEINS Ralf and ZIKA Alexander. (2021). Structural changes in photoswitchable dendrimer-azodye systems. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-662
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