Diacetylene-Functionalized Dendrons: Self-Assembled and Photopolymerized Three-Dimensional Networks for Advanced Self-Healing and Wringing Soft Materials
- Diacetylene-Functionalized Dendrons: Self-Assembled and Photopolymerized Three-Dimensional Networks for Advanced Self-Healing and Wringing Soft Materials
- 김대윤; Yu-Jin Choi; Daseal Jung; Seok-In Lim; Kwang-Un Jeong; Won-Jin Yoon
- Issue Date
- ACS Applied Materials & Interfaces
- VOL 12, NO 29-33245
- The physical properties of supramolecular soft materials strongly depend on the molecular packing structures constructed by thermodynamically and kinetically controlled molecular self-assembly. To investigate the relationship between molecular function and selfassembled molecular packing structure, a series of diacetylene (DA)-based supramolecules was synthesized by chemically connecting flexible dendrons to DA with amide (aDA− D) or ester (eDA− D) functions. The three-dimensional (3D) organogel network of amide-functionalized aDA− D was prepared in both polar and nonpolar solvents due to the intermolecular hydrogen bonding. 3D networks of aDA− D can be further stabilized by topochemical photopolymerization. The self-healing behavior of aDA− D was observed in the sheet-like structure formed in n-dodecane by the hydrophobic interaction between the gelator and solvent. The wringing behavior of aDA− D was also demonstrated using the dynamic interaction of amide function with n-butanol solvent. Kinetically controlled and photostabilized 3D networks can be a key component from biomedical devices to soft robotic applications.
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