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Chitosan as a Protective Matrix for the Squaraine Dye
Halina Kaczmarek1, Patryk Rybczyński1, Piotr Maćczak1,2
1Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland.
Materials (Basel, Switzerland)
|April 3, 2021
Summary
Chitosan protects photosensitive squaraine dye from UV degradation and improves heat resistance. This chitosan-dye system shows potential for biomedical imaging and protective coatings.
Area of Science:
- Materials Science
- Biopolymer Chemistry
- Photochemistry
Background:
- Chitosan is a biopolymer with versatile applications.
- Squaraine dyes are photosensitive and prone to degradation.
- Developing stable dye-based systems is crucial for advanced applications.
Purpose of the Study:
- To investigate chitosan as a protective matrix for squaraine dye.
- To characterize the physicochemical properties of chitosan-squaraine systems.
- To explore potential applications in biomedical imaging and protective coatings.
Main Methods:
- Preparation of chitosan-squaraine systems in solution and solid-state.
- Investigation of physicochemical properties using spectroscopic and morphological analyses.
- Assessment of dye stability under UV radiation and thermal stress.
Main Results:
- Chitosan matrix effectively protects squaraine dye from UV degradation.
- Chitosan-squaraine systems exhibit intense fluorescence in solution, suppressed in solid-state due to morphology.
- Dye incorporation enhances chitosan's heat resistance through mutual interactions.
- Limited dye release from chitosan in liquid media.
Conclusions:
- Chitosan serves as an effective protective matrix for squaraine dye.
- Chitosan-squaraine solutions are suitable for biomedical imaging applications.
- Chitosan films offer enhanced thermal and UV protective coating properties.
