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Polymers02:34

Polymers

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The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
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Engineering responsive polymer building blocks with host-guest molecular recognition for functional applications.

Jinming Hu1, Shiyong Liu

  • 1CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei, Anhui 230026, China.

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Responsive polymers integrated with host-guest chemistry offer enhanced adaptability to stimuli. This approach enables advanced applications in sensing, drug delivery, and self-healing materials, inspired by nature's responsive systems.

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Polymer Science

Background:

  • Living organisms and soft matter exhibit intrinsic responsiveness and adaptability to external stimuli.
  • Conventional stimuli-responsive polymers, built on covalent bonds, undergo changes in response to stimuli for applications like drug delivery and sensing.
  • Supramolecular chemistry, utilizing reversible noncovalent interactions, offers a versatile strategy for materials fabrication with enhanced adaptivity.

Purpose of the Study:

  • To summarize recent advancements in responsive polymeric materials incorporating host-guest recognition motifs.
  • To demonstrate how host-guest chemistry modulates polymer responsiveness and introduces specificity.
  • To highlight functional applications including optical sensing, drug/gene delivery, and self-healing materials.

Main Methods:

  • Integration of host-guest recognition motifs with responsive polymer building blocks.
  • Utilizing noncovalent interactions (e.g., hydrogen bonding, metal coordination, hydrophobic association) for supramolecular assembly.
  • Review and categorization of recent progress based on design and function.

Main Results:

  • Host-guest chemistry broadens the responsiveness of polymers to external stimuli, leading to more sophisticated functions.
  • Responsive specificity and selectivity are inherited from host-guest recognition motifs, enhancing material performance.
  • Demonstrated applications in optical sensing and imaging, drug and gene delivery, and self-healing materials.

Conclusions:

  • The integration of host-guest chemistry into polymeric systems represents a significant advancement in stimuli-responsive materials.
  • This approach offers a new platform for constructing novel materials with tailored and enhanced functionalities.
  • Future developments hold promise for fundamental research and practical applications benefiting daily life.