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Cellulose Acetate-Based Plasmonic Crystals for Surface-Enhanced Raman and Fluorescence Spectroscopy
Agata Fularz1, Dimitrios Stogiannis1,2, James H Rice1
1School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.
ACS Materials Au
|March 1, 2023
Summary
Researchers developed eco-friendly plasmonic structures from cellulose acetate. These sustainable materials enhance fluorescence signals for potential use in diagnostic tools.
Area of Science:
- Materials Science
- Photonics
- Biotechnology
Background:
- Growing demand for sustainable and biodegradable materials in photonics.
- Cellulose derivatives offer eco-friendly alternatives to conventional plastics due to abundance and low environmental impact.
Purpose of the Study:
- To fabricate and characterize novel plasmonic structures using sustainable cellulose acetate.
- To evaluate the potential of these structures for enhancing optical signals in biosensing applications.
Main Methods:
- Soft lithography was employed to mold cellulose acetate into submicrometric periodic lattices.
- Plasmonic properties and signal enhancement capabilities were investigated.
Main Results:
- Successfully fabricated submicrometric periodic cellulose acetate lattices.
- Demonstrated significant enhancement of Raman and fluorescence signals for various analytes.
- Achieved a 23-fold fluorescence signal enhancement in a model immunoassay using a streptavidin-conjugated dye.
Conclusions:
- Cellulose acetate-based plasmonic structures are viable sustainable materials for photonic applications.
- The fabricated platforms show significant potential for enhancing biosensing and diagnostic tool development.
