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Photoluminescence: Fluorescence and Phosphorescence01:23

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Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
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  1. Home
  3. Multi-functional Lanthanide Metallopolymer: Self-healing And Photo-stimuli-responsive Dual-emitting Luminescence For Diverse Applications.
  1. Home
  3. Multi-functional Lanthanide Metallopolymer: Self-healing And Photo-stimuli-responsive Dual-emitting Luminescence For Diverse Applications.

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Multi-Functional Lanthanide Metallopolymer: Self-Healing and Photo-Stimuli-Responsive Dual-Emitting Luminescence for

Di Zhao1, Lei Guo1, Qianrui Li1

  • 1School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin, 300130, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|July 22, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

New luminescent metallopolymers offer photo-responsive and self-healing capabilities. These advanced materials enable applications in light-writing, encryption, and UV sensing.

Keywords:
lanthanidephotoluminescencephotosensitiveself‐healingspiropyran

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Photochemistry

Background:

  • Photoluminescent metallopolymers are key for advanced applications like photo-rewritable patterns and anti-counterfeiting.
  • Challenges remain in achieving fast response, durability, and multi-functionality in these materials.

Purpose of the Study:

  • To develop novel luminescent photochromic lanthanide (Ln) metallopolymers with rapid self-healing properties.
  • To explore their potential in light-writing, information encryption, and UV sensing.

Main Methods:

  • Synthesized metallopolymers by cross-linking terpyridine (Tpy)- and spiropyran (SP)- functionalized polyurethane chains.
  • Utilized Ln-Tpy coordination bonds and H-bonds for polymer chain cross-linking.
  • Investigated photo-stimuli responsiveness and luminescence properties.

Main Results:

  • Achieved photo-stimuli responsiveness via spiropyran monomers without external dopants.
  • Demonstrated dual-emitting performance under UV light from Ln-Tpy and open-ring SP moieties.
  • Exhibited satisfactory mechanical properties, self-healing abilities, and tunable luminescence colors.

Conclusions:

  • The developed Ln metallopolymers possess unique photo-responsive and self-healing characteristics.
  • These materials offer versatile platforms for light-writing, advanced encryption, and wearable UV sensors.
  • The study provides insights into designing multifunctional intelligent materials.