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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Biomaterials Engineering

Background:

  • Low-molecular-weight gelators (LMWGs) are crucial for creating functional soft materials.
  • Designing LMWGs with controlled self-assembly is essential for tailored applications.
  • Modular architectures offer a versatile platform for tuning LMWG properties.

Purpose of the Study:

  • To rationally design and synthesize a family of effective LMWGs.
  • To investigate the pH-triggered self-assembly mechanism of these LMWGs.
  • To evaluate the potential of the resulting hydrogels as biomicroenvironments.

Main Methods:

  • Synthesis of LMWGs based on a C(2)-symmetric 1,4-diamide cyclohexane core.
  • Characterization of gelation properties and self-assembly behavior.
  • pH-dependent studies to control gel formation.
  • Primary cell culture experiments to assess biocompatibility and microenvironment suitability.

Main Results:

  • A family of effective LMWGs with modular architecture was successfully synthesized.
  • The self-assembly process is highly efficient, triggered and tunable by solution pH.
  • Gel assembly correlates with the pK(a) of functional substituents.
  • Hydrogels formed under physiological conditions demonstrated potential as tailor-made microenvironments.

Conclusions:

  • The developed LMWGs offer a modular and pH-responsive platform for versatile gel formation.
  • The pH-triggered self-assembly provides precise control over gelation.
  • The resulting hydrogels show promise as biomimetic microenvironments for cell culture.