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Shape-Controllable and Fluorescent Supramolecular Organic Frameworks Through Aqueous Host-Guest Complexation.

Yawen Li1, Yunhong Dong1, Xiaran Miao2

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Summary

Researchers created two fluorescent supramolecular organic frameworks (SOFs) with controllable shapes in water. These SOFs show tunable photophysical properties and are applied for cellular imaging.

Keywords:
cucurbit[8]urilfluorescencehost-guest complexationsupramolecular chemistrysupramolecular organic frameworks

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Area of Science:

  • Supramolecular chemistry
  • Materials science
  • Photophysics

Background:

  • Supramolecular organic frameworks (SOFs) offer tunable properties for advanced applications.
  • Controlling the hierarchical assembly and photophysical behavior of SOFs remains a challenge.

Purpose of the Study:

  • To construct shape-controllable, fluorescent supramolecular organic frameworks (SOFs) using host-guest chemistry.
  • To investigate the photophysical properties and stimuli-responsive behavior of the synthesized SOFs.
  • To explore the application of these fluorescent SOFs in cellular imaging.

Main Methods:

  • Hierarchical self-assembly of CB[8] and tetraphenylethylene derivatives in aqueous media.
  • Characterization of SOF morphology (cuboid, spheroid) and photophysical properties.
  • Investigation of fluorescence response to competitive guests and application in cellular imaging.

Main Results:

  • Two types of shape-controllable fluorescent SOFs (cuboid and spheroid) were successfully synthesized.
  • The SOFs exhibited significant red-shifts in fluorescence (up to 82 nm) and stimuli-responsive behavior.
  • Turn-on fluorescence capability was demonstrated and applied effectively for cellular imaging.

Conclusions:

  • Hierarchical construction of shape-controllable fluorescent SOFs is achievable through host-guest interactions.
  • The synthesized SOFs possess tunable photophysical properties and responsiveness, suitable for advanced applications.
  • Fluorescent SOFs show promise as imaging agents in biological systems.