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FRET Imaging in Three-dimensional Hydrogels
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In Situ H2O Meter by Visualization in Hydrogels.

Qiang Fu1, Hongwei Tan1, Luzheng Liu2

  • 1Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.

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Summary
This summary is machine-generated.

A new colorimetric molecular probe (DHBYD) allows real-time, visual evaluation of water content in hydrogel micropores. This simple method offers full-range detection, improving hydrogel monitoring and applications.

Keywords:
colorimetric molecular probehydrogelsin situ monitoringsolvent contentvisual water-meter

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Area of Science:

  • Materials Science
  • Chemical Sensing
  • Polymer Chemistry

Background:

  • Hydrogel properties are sensitive to solvent content, impacting viscoelasticity and network structure.
  • Existing methods for evaluating water content in hydrogel micropores are limited by structural susceptibility and autofluorescence.
  • There is a need for a direct, visual method to assess water content within hydrogel micropores.

Purpose of the Study:

  • To develop a colorimetric molecular probe for in situ visualization of water content in hydrogel micropores.
  • To establish a simple, rapid, and full-range method for evaluating solvent content in hydrogels.
  • To enable real-time monitoring of hydrogels for improved material properties and applications.

Main Methods:

  • Synthesis of a novel colorimetric molecular probe (DHBYD).
  • Investigation of DHBYD's rapid and reversible colorimetric responses to solvents.
  • Correlation of RGB values with water content using a cubic polynomial for quantitative analysis.
  • Theoretical calculations to elucidate the sensing mechanism involving intramolecular charge transfer.

Main Results:

  • DHBYD demonstrated a full linearity range (0-100%) for real-time water content detection.
  • The sensing mechanism was attributed to intramolecular charge transfer via phenol group deprotonation.
  • A cubic polynomial model was established for accurate quantification of water content in hydrogels.
  • The method provides a simple, in situ, and full-range evaluation without complex procedures or expensive instruments.

Conclusions:

  • The developed DHBYD probe offers a novel pathway for simple, in situ, and full-range evaluation of solvent content in hydrogel micropores.
  • This technique facilitates fast and in situ monitoring, crucial for optimizing hydrogel properties.
  • The methodology has potential applications beyond hydrogels, including synthesis and industrial processes.