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Emerging Applications of Fluorogenic and Non-fluorogenic Bifunctional Linkers.

Guhuan Liu1, Jinming Hu1, Shiyong Liu1

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Summary
This summary is machine-generated.

Fluorogenic bifunctional linkers enable real-time, in situ monitoring of conjugation processes, advancing applications in bioconjugation and materials science. This review details their development and diverse uses.

Keywords:
bioorganic chemistrycleavage reactionsconjugationfluorescent probeslinker chemistry

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Area of Science:

  • Chemical Biology
  • Materials Science
  • Biotechnology

Background:

  • Bifunctional linkers are crucial for creating complex molecular systems like drug-protein conjugates and modified nanoparticles.
  • Current methods for assessing conjugation efficiency (e.g., mass spectrometry) are indirect and require separate sample analysis.
  • Developing fluorogenic linkers would allow for direct, real-time observation of conjugation events.

Purpose of the Study:

  • To review the advancements in fluorogenic bifunctional linkers.
  • To categorize different types of fluorogenic linkers and their applications.
  • To highlight stimuli-cleavable linkers for controlled release applications.

Main Methods:

  • Review of existing literature on bifunctional linkers.
  • Categorization of fluorogenic linkers based on structure and function (single-caging, double-caging).
  • Discussion of applications in bioconjugation, surface modification, and polymer chemistry.

Main Results:

  • Fluorogenic bifunctional linkers offer in situ monitoring capabilities, overcoming limitations of traditional ex situ methods.
  • Categorization includes hetero-bifunctional single-caging, homo-bifunctional double-caging, and hetero-bifunctional double-caging linkers.
  • Stimuli-cleavable linkers provide dual functionality for conjugation and triggered release.

Conclusions:

  • Fluorogenic bifunctional linkers represent a significant innovation for real-time conjugation analysis.
  • Their development enables enhanced control and visualization in constructing functional molecular architectures.
  • Future applications are expected in advanced drug delivery, diagnostics, and smart materials.