Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Electrochemically tunable surface-plasmon-enhanced diffraction gratings and their (bio-)sensing applications.

Shengjun Tian1, Neal R Armstrong, Wolfgang Knoll

  • 1Max-Planck-Institute for Polymer Research, Ackermannweg 10, D-55128, Mainz, Germany.

Langmuir : the ACS Journal of Surfaces and Colloids
|July 22, 2005
PubMed
Summary

This study combines electrochemistry with surface-plasmon-enhanced diffraction to create a switchable polymer grating. This novel approach enables tunable optical properties for potential biosensing applications.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Single-sequence based gFET-aptasensors for the discrimination of apo- and holo-RBP4 in human serum.

Scientific reports·2026
Same author

New potential antimicrobial peptides with mirror-symmetrical structure in fungi and insects.

Frontiers in microbiology·2026
Same author

Buried Interfaces in Organic Photocathodes for H<sub>2</sub> Evolution: Fermi-Level Pinning and Recombination.

ACS applied materials & interfaces·2026
Same author

A Vibrational Probe of Electrical Doping in N2200 and Fermi-Level Alignment at Polymer Cathode/Metal Cocatalyst/Electrolyte Junctions.

Journal of the American Chemical Society·2026
Same author

SPARC: A programmable molecular diagnostic platform based on a signal-triggered, self-supplied crRNA and tiered PER-transcription-CRISPR cascade for early detection of hepatocellular carcinoma.

Analytica chimica acta·2026
Same author

Deposition-Dependent Coverage and Performance of Phosphonic Acid Interface Modifiers in Halide Perovskite Optoelectronics.

ACS applied materials & interfaces·2025

Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Redox-switchable polymers offer tunable properties for advanced applications.
  • Surface-plasmon-enhanced diffraction (ESPD) provides a sensitive method for probing material changes.
  • Developing novel (bio-)sensing platforms is crucial for diagnostics and environmental monitoring.

Purpose of the Study:

  • To investigate the electrochemistry and (bio-)sensing capabilities of a redox-switchable polymer grating.
  • To explore the modulation of diffraction efficiency (DE) in polyaniline/poly(styrenesulfonate) (PANI/PSS) gratings.
  • To assess the potential of ESPD technologies for biosensing applications.

Main Methods:

  • Fabrication of patterned PANI/PSS arrays using electropolymerization and micromolding in capillaries (MIMIC).

Related Experiment Videos

  • Utilizing the PANI/PSS grating as an optical element in ESPD experiments.
  • Modulating the grating's properties via applied potential and pH changes.

    • Main Results:

    • Diffraction efficiency (DE) of the PANI/PSS grating was tunable by applied potential and solution pH.
    • The pH response of DE was dependent on the redox state of the PANI/PSS grating, showing linear behavior when reduced.
    • Electrocatalytic detection of beta-nicotinamide adenine dinucleotide (NADH) was demonstrated by an increase in DE with concentration in the oxidized state.

    Conclusions:

    • ESPD is a viable technique for investigating redox-switchable polymer gratings.
    • The PANI/PSS grating exhibits tunable optical properties sensitive to electrochemical and chemical stimuli.
    • The demonstrated electrocatalytic detection of NADH highlights the potential of ESPD for developing novel biosensors.