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A Solid-State Fluorescence Switch Based on Triphenylethene-Functionalized Dithienylethene With Aggregation-Induced

Haining Zhang1, Xiaoxiao Hu1, Huijuan Zhu1

  • 1Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, China.

Frontiers in Chemistry
|May 17, 2021
PubMed
Summary
This summary is machine-generated.

Novel dithienylethene molecules show promising photochromic and aggregation-induced emission properties. These compounds function as efficient fluorescence switches in solid states, ideal for optoelectronics and photopharmacology applications.

Keywords:
aggregation-induced emissiondithienylethenefluorescence switchphotochromismtriphenylethene

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Area of Science:

  • Materials Science
  • Organic Chemistry
  • Photochemistry

Background:

  • Developing advanced fluorescence switches for solid-state applications is crucial for optoelectronics and photopharmacology.
  • Dithienylethene derivatives are known for their photochromic properties, but solid-state performance needs enhancement.

Purpose of the Study:

  • To design and synthesize novel triphenylethene-functionalized dithienylethenes.
  • To investigate their photochromic behavior, aggregation-induced emission (AIE), and fluorescence switching in aggregated and solid states.

Main Methods:

  • Chemical synthesis of three novel dithienylethene derivatives (1-3).
  • Characterization using NMR (1H, 13C) and HRMS (ESI).
  • Photochromic and fluorescence studies under UV/visible light irradiation in solution, aggregated, and solid states.
  • Density Functional Theory (DFT) calculations for validation.

Main Results:

  • Successful synthesis and structural confirmation of compounds 1-3.
  • Exhibited excellent photochromic behavior and fatigue resistance in THF solution.
  • Demonstrated Aggregation Induced Emission (AIE) and luminescence in the solid state before UV irradiation.
  • Showcased effective fluorescent switching in aggregated and solid states upon alternating UV/visible light irradiation.

Conclusions:

  • The synthesized dithienylethene derivatives function as efficient photochromic fluorescence switches in aggregated and solid states.
  • These compounds hold potential for integration into smart optoelectronic materials and photopharmacology.
  • The findings are supported by DFT calculations, validating their performance.