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Intelligent writable material based on a supramolecular self-assembly gel.

Xinxian Ma1, Bo Qiao1, Yingshan Lai1

  • 1College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan 756000, People's Republic of China. maxinxian@163.com.

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|February 5, 2021
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Summary

A novel gelator (G1) forms a supramolecular organogel that emits blue light with magnesium ions. This light emission is erasable, enabling a smart writable material.

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science

Background:

  • Acylhydrazone-based gelators are explored for stimuli-responsive materials.
  • Developing novel organogelators with unique responsive properties is an active research area.

Purpose of the Study:

  • To design and synthesize a dual acylhydrazone-functionalized gelator (G1).
  • To investigate the supramolecular gelation behavior of G1 in a DMF-H2O solvent mixture.
  • To explore the potential of G1-gel for developing smart erasable writable materials.

Main Methods:

  • Synthesis of the dual acylhydrazone-functionalized gelator (G1).
  • Supramolecular organogel formation in a mixed solvent system (DMF-H2O).
  • Spectroscopic analysis to study the luminescent properties and response to Mg2+, saliva, and CO32-.

Main Results:

  • The synthesized gelator G1 successfully formed a supramolecular organogel (G1-gel).
  • The G1-gel solution exhibited brilliant blue light emission upon addition of magnesium ions (Mg2+).
  • The blue light emission was reversibly erased by saliva or carbonate ions (CO32-).

Conclusions:

  • A novel dual acylhydrazone-functionalized gelator (G1) was synthesized and characterized.
  • The G1-gel exhibits a distinct Mg2+-responsive fluorescence, enabling its use as a visual sensor.
  • The reversible nature of the fluorescence switching facilitates the creation of a smart erasable writable material.