Stimuli-sensitive layer-by-layer (LbL) self-assembly systems: targeting and biosensory applications.

Area of Science:

• Materials Science
• Nanotechnology
• Biomedical Engineering

Background:

• Layer-by-layer (LbL) self-assembly is a facile technique for fabricating multilayered structures.
• LbL systems demonstrate significant potential in drug delivery and biosensing applications.
• Stimuli-responsive LbL systems enhance targeted delivery and diagnostic capabilities.

Purpose of the Study:

• To review recent advancements in stimuli-sensitive LbL self-assembly systems.
• To highlight the applications of these systems, particularly in drug delivery.
• To categorize stimuli-responsive LbL systems based on trigger type.

Main Methods:

• Adsorption of oppositely charged polyelectrolytes onto core materials.
• Fabrication of multilayered nanostructures via sequential deposition.
• Classification of systems based on exogenous (external) and endogenous (internal) stimuli responsiveness.

Main Results:

• Stimuli-responsive LbL systems offer tunable properties for controlled release.
• These systems show promise for targeted drug delivery and sensitive biosensing.
• Categorization aids in understanding system design and application potential.

Conclusions:

• Stimuli-sensitive LbL self-assembly is a powerful platform for advanced biomedical applications.
• Further research into exogenous and endogenous stimuli-responsive LbL systems will drive innovation in drug delivery and biosensing.
• The simplicity and versatility of LbL assembly ensure its continued relevance in nanotechnology and materials science.