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Related Experiment Video

Updated: Dec 5, 2025

Method Development for Contactless Resonant Cavity Dielectric Spectroscopic Studies of Cellulosic Paper
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Spotting aged dyes on paper with SERS.

Alfonso Zoleo1, Cecilia Rossi1, Giovanna Poggi2

  • 1Department of Chemical Sciences, University of Padova, Italy, Via Marzolo 1, 35131 Padova, Italy. moreno.meneghetti@unipd.it.

Physical Chemistry Chemical Physics : PCCP
|October 20, 2020
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Summary

Surface enhanced Raman spectroscopy (SERS) using gold nanoparticles detects aged ballpoint pen dyes on paper. Understanding dye-nanoparticle interactions is crucial for accurate analysis of cultural heritage artworks.

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Spectroscopy

Background:

  • Surface-enhanced Raman spectroscopy (SERS) offers high sensitivity for molecular identification.
  • Ballpoint pen inks, widely used and sensitive to light, pose challenges for analysis due to rapid discoloration.
  • Limited research exists on SERS applications for aged dyes and inks, particularly in cultural heritage contexts.

Purpose of the Study:

  • To investigate the use of laser-ablated gold nanoparticles (AuNPs) for SERS detection of aged ballpoint pen ink dyes on paper.
  • To analyze the SERS spectra of ballpoint pen ink after light-induced aging.
  • To discuss the critical role of dye-nanoparticle interactions in the analysis of degraded ink components.

Main Methods:

  • Utilized naked laser-ablated gold nanoparticles (AuNPs) for SERS analysis.
  • Artificially aged ballpoint pen ink on two types of paper using light-induced degradation.
  • Analyzed SERS spectra to understand dye-AuNP interactions and identify aged ink components.

Main Results:

  • SERS spectra of aged ballpoint pen ink on paper were successfully obtained.
  • Demonstrated the critical role of dye diffusion to plasmonic nanoparticle hot spots for detecting degraded ink.
  • Highlighted the complexity and delicacy required for interpreting SERS spectra of aged samples.

Conclusions:

  • Accurate interpretation of SERS spectra from aged cultural heritage materials is challenging.
  • Dye-plasmonic nanoparticle interactions significantly influence the detection of degraded ink components.
  • Evaluating factors affecting these interactions and artwork history is essential to prevent misinterpretation of original compositions.