Photolabile-Protected Triazine-Based Janus G-C and Triple G-C-T Base-Coded Nucleobases for Supramolecular Polymer...

Area of Science:

• Supramolecular Chemistry
• Polymer Science
• Organic Synthesis

Background:

• Janus systems offer precise control over self-assembly and material properties.
• Nucleobase-inspired monomers can form specific hydrogen-bonding interactions.
• Photolabile protecting groups enable controlled deprotection and subsequent assembly.

Purpose of the Study:

• To design and synthesize novel photolabile-protected triazine-based nucleobase monomers.
• To incorporate Janus G-C and triple G-C-T base-coded motifs into monomers.
• To demonstrate UV-triggered supramolecular self-assembly and property enhancement.

Main Methods:

• Synthesis of triazine-based monomers mimicking G, C, and T bases.
• Protection of monomers using O-nitrobenzyl (O-NB) groups.
• Free-radical polymerization of a representative triple G-C-T monomer.
• UV-induced deprotection to activate hydrogen-bonding sites.

Main Results:

• Successful synthesis of Janus nucleobase monomers with G-C and G-C-T motifs.
• O-NB protected monomers exhibit stability under various conditions.
• Polymerization yields protected polymers that can be deprotected upon UV exposure.
• Deprotection triggers supramolecular self-assembly, leading to enhanced mechanical performance.

Conclusions:

• A versatile synthetic platform for nucleobase-derived Janus monomers was established.
• Orthogonal reactivity and photochemically switchable supramolecular organization are achievable.
• This approach enables the development of advanced functional materials with tunable properties.