Photo-responsive self-assemblies based on bio-inspired DNA-base containing bolaamphiphiles

Area of Science:

• Supramolecular Chemistry
• Materials Science
• Photochemistry

Background:

• Bio-inspired molecules offer unique self-assembly properties.
• Photo-responsive materials can change structure upon light exposure.
• Bolaamphiphiles are molecules with two hydrophilic groups and one hydrophobic group.

Purpose of the Study:

• To investigate the photo-responsive self-assembly of novel bio-inspired bolaamphiphiles.
• To understand the morphological changes induced by UV irradiation.
• To characterize the self-assembly structures using advanced analytical techniques.

Main Methods:

• Synthesis of bolaamphiphiles with oligo(ethylene oxide) hydrophilic segments and a thymine-containing hydrophobic segment.
• UV irradiation studies in aqueous solutions.
• Characterization using Nuclear Magnetic Resonance (1HNMR, 13CNMR), Dynamic Light Scattering (DLS), and Transmission Electron Microscopy (TEM).

Main Results:

• Bolaamphiphiles self-assembled into distinct structures in water.
• UV irradiation induced a significant morphological transformation from ribbon-like to spherical assemblies.
• Analytical techniques confirmed the structural changes and provided insights into the assembly mechanism.

Conclusions:

• The investigated bio-inspired bolaamphiphiles exhibit photo-responsive self-assembly behavior.
• UV light effectively controls the morphology of these supramolecular structures.
• These findings suggest potential applications in stimuli-responsive materials and nanotechnology.