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Related Experiment Video

Updated: Jun 2, 2026

Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

σ-p Hyperconjugation-Enabled Covalent Organic Frameworks for Programmable Cascaded Optical Modulation.

Yin-Sheng Liu1, Bing Yan1

  • 1Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|June 1, 2026
PubMed
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Researchers harnessed σ-p hyperconjugation to control covalent organic frameworks (COFs). This tuning significantly boosts fluorescence and enables multicolor outputs for sensing applications.

Area of Science:

  • Materials Science
  • Chemistry
  • Nanotechnology

Background:

  • Covalent organic frameworks (COFs) exhibit tunable electronic properties.
  • Controlling excited-state behavior in COFs is crucial for advanced applications.
  • Understanding molecular levers for electronic regulation is an active research area.

Purpose of the Study:

  • To investigate the role of σ-p hyperconjugation in regulating COF excited-state properties.
  • To develop COF-based heterostructures for programmable optical responses.
  • To demonstrate a novel sensing platform for molecular stimuli.

Main Methods:

  • Activation of σ-p hyperconjugation in COFs.
  • Fabrication of COF-OMe/Eu@UiO-66-(COOH)2 heterojunctions.
  • Incorporation of functionalized COFs into polyacrylonitrile membranes.
Keywords:
chameleon‐biomimetic optical sensingcovalent organic frameworksexcited‐state regulationinterfacial charge transferσ–p Hyperconjugation

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Related Experiment Videos

Last Updated: Jun 2, 2026

Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Main Results:

  • σ-p hyperconjugation amplified fluorescence quantum yield up to 167-fold.
  • Achieved programmable control over interfacial charge transfer and multicolor outputs.
  • Demonstrated hormone binding detection via distinct optical fingerprints.
  • Preserved optical responses in flexible, machine-learning-readable membranes.

Conclusions:

  • σ-p hyperconjugation is a key molecular lever for tuning COF electronic and optical properties.
  • Electronically adaptive COF-MOF heterostructures can transduce molecular perturbations into optical signals.
  • This approach offers a versatile platform for advanced sensing and readout technologies.