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Related Concept Videos

Variables Affecting Phosphorescence and Fluorescence01:26

Variables Affecting Phosphorescence and Fluorescence

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Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
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Supramolecular Polymers with Photoswitchable Multistate Fluorescence for Anti-Counterfeiting and Encryption.

Jia Tang1, Yong Tian1, Zhong Lin1

  • 1Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan Provincial Key Lab of Advanced Materials for New Energy Storage and Conversion, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China.

ACS Applied Materials & Interfaces
|December 20, 2022
PubMed
Summary
This summary is machine-generated.

Novel photoswitchable fluorescent supramolecular polymers (PMFSPs) were created using host-guest interactions. These materials exhibit reversible tristate fluorescence switching for advanced applications.

Keywords:
FRETanti-counterfeitingfluorescenceinformation encryptionphotoswitchsupramolecular polymer

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Photochemistry

Background:

  • Photoswitchable fluorescent materials offer tunable emission signals for diverse applications.
  • Developing materials with controllable fluorescence is crucial for advanced technologies.
  • Supramolecular polymers provide a versatile platform for designing functional materials.

Purpose of the Study:

  • To synthesize novel photoswitchable multistate fluorescent supramolecular polymers (PMFSPs).
  • To achieve reversible tristate fluorescence switching (none, red, green) using host-guest interactions.
  • To explore the potential of these PMFSPs in anti-counterfeiting and information encryption.

Main Methods:

  • Preparation of PMFSPs via a facile ultrasonication strategy utilizing host-guest interactions.
  • Covalent combination of photochromic fluorescent diarylethylene monomer (SDTE, donor) and adamantane-containing monomer (BAC) into a guest polymer backbone (P1) via radical copolymerization.
  • Synthesis of a host moiety (CDSP, acceptor) by incorporating photochromic spiropyran dye (SPCOOH) with β-cyclodextrin.

Main Results:

  • Successful synthesis of PMFSPs capable of reversible tristate fluorescence switching.
  • Demonstration of fluorescence modulation (none, red, green) by adjusting stimulation wavelength and utilizing photoinduced fluorescence resonance energy transfer (FRET).
  • Observation of high contrast, rapid photoresponsiveness, and prominent photoreversibility in the synthesized PMFSPs.

Conclusions:

  • The developed PMFSPs exhibit efficient and reversible multistate fluorescence switching.
  • The materials show significant potential for applications in advanced anti-counterfeiting and multilevel information encryption.
  • The facile host-guest interaction and ultrasonication strategy offer a promising route for creating functional supramolecular materials.