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Related Experiment Video

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Lipid Bilayer Vesicle Generation Using Microfluidic Jetting
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Eu3+-Controlled Fluorescent Bilayer Vesicles.

Jin Yuan1, Ling Wang1, Yitong Wang1

  • 1Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , China.

Langmuir : the ACS Journal of Surfaces and Colloids
|February 19, 2019
PubMed
Summary

Researchers developed a new organic-inorganic supramolecule, (TBA)3POM-PPCT, that self-assembles into bilayer vesicles. These vesicles exhibit fluorescence and selectively detect Cu2+ ions in nonaqueous solutions.

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Nanotechnology

Background:

  • Polyoxometalates (POMs) can be functionalized into organic-inorganic supramolecules (OISMs).
  • OISMs can form aggregates in solution, exhibiting tunable properties.
  • Nonaqueous solutions offer unique environments for supramolecular assembly.

Purpose of the Study:

  • To synthesize and characterize a novel OISM, (TBA)3POM-PPCT.
  • To investigate the self-assembly behavior of (TBA)3POM-PPCT in nonaqueous solution.
  • To explore the potential of the self-assembled structures as a fluorescence-based ion-detecting platform.

Main Methods:

  • Dynamic light scattering (DLS) for size analysis.
  • Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) for morphology.
  • Atomic force microscopy (AFM) for surface characterization.
  • Fluorescence spectroscopy for optical properties.

Main Results:

  • (TBA)3POM-PPCT self-assembles into stable bilayer vesicles controlled by Eu3+.
  • Vesicle formation was confirmed by DLS, TEM, SEM, and AFM, with an average hydrodynamic radius of ~510 nm.
  • The Eu3+-coordinated vesicles exhibit fluorescence and a highly selective response to Cu2+ ions.

Conclusions:

  • A novel Eu3+-controlled OISM, (TBA)3POM-PPCT, forms stable bilayer vesicles in nonaqueous solution.
  • These vesicles possess tunable fluorescence properties.
  • The OISM-based vesicles serve as a promising platform for selective Cu2+ ion detection.