Red Room Temperature Phosphorescence from Lignin
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View abstract on PubMed
Summary
This summary is machine-generated.Sustainable red room-temperature phosphorescence (RTP) materials were created from lignin. Modified lignin (Lig-Upy) exhibits tunable red RTP, enabling applications in anti-counterfeiting and visual displays.
Area Of Science
- Materials Science
- Organic Chemistry
- Sustainable Chemistry
Background
- Developing red room-temperature phosphorescence (RTP) materials from sustainable sources is a significant challenge.
- Lignin, a renewable biopolymer, offers potential but requires functionalization for advanced optical properties.
Purpose Of The Study
- To synthesize novel red RTP materials from lignin.
- To investigate the impact of chemical modification on lignin's phosphorescent properties.
- To explore the potential of these materials in applications like anti-counterfeiting.
Main Methods
- Covalent modification of lignin with Upy (1-(6-isocyanatohexyl)-3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl) urea) to create Lig-Upy.
- Characterization of Lig-Upy's photophysical properties, including RTP emission wavelength and lifetime.
- Embedding Lig-Upy into different matrices (PVA, MTM) to study matrix-dependent property variations.
Main Results
- Lig-Upy demonstrated red RTP centered at 625 nm with a long lifetime of 24.2 ms.
- The Upy modification enhanced intermolecular interactions and reduced energy gaps in lignin.
- Embedding Lig-Upy in PVA and MTM matrices resulted in tunable RTP wavelengths and lifetimes.
- Developed time-dependent phosphorescent color (TDPC) materials from Lig-Upy.
Conclusions
- Lignin can be effectively functionalized to produce sustainable red RTP materials.
- The tunable phosphorescence of Lig-Upy opens avenues for advanced optical applications.
- TDPC materials derived from Lig-Upy show promise for visual decoration, information encryption, and anti-counterfeiting.
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