Pyrene-naphthalimide Schiff base as a fluorescent pigment in water-based security ink

R. S. Bhagya; Kashmitha Muthamma; Dhanya Sunil; Prakasha Shetty; Suresh D. Kulkarni

doi:10.1007/s11696-023-02827-y

Pyrene-naphthalimide Schiff base as a fluorescent pigment in water-based security ink

R. S. Bhagya, Kashmitha Muthamma, Dhanya Sunil, Prakasha Shetty, Suresh D. Kulkarni

Research output: Contribution to journal › Article › peer-review

Abstract

Fluorescence-based materials that are affordable and easy to use for commercial anti-counterfeiting applications are in high demand. While exploring new fluorescent pigments, a pyrene-naphthalimide Schiff base, 5-hydroxy-2-((pyren-1-ylmethylene)amino)-1H-benzo[de]isoquinoline-1,3(2H)-dione (NHPY) with yellow fluorescence under UV light was synthesized. An eco-friendly flexographic ink prepared with NHPY as the pigment was coated on a UV dull paper and further printed on security paper as well as packaging papers and boards. When exposed to UV light, the printed samples showed yellow fluorescence. The light fastness, gloss, colorimetric results, and abrasion resistance of the printed samples proved that NHPY is a suitable fluorescent pigment for security printing applications.

Original language	English
Journal	Chemical Papers
DOIs	https://doi.org/10.1007/s11696-023-02827-y
Publication status	Accepted/In press - 2023

All Science Journal Classification (ASJC) codes

Chemistry(all)
Biochemistry
Chemical Engineering(all)
Industrial and Manufacturing Engineering
Materials Chemistry

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10.1007/s11696-023-02827-y

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title = "Pyrene-naphthalimide Schiff base as a fluorescent pigment in water-based security ink",

abstract = "Fluorescence-based materials that are affordable and easy to use for commercial anti-counterfeiting applications are in high demand. While exploring new fluorescent pigments, a pyrene-naphthalimide Schiff base, 5-hydroxy-2-((pyren-1-ylmethylene)amino)-1H-benzo[de]isoquinoline-1,3(2H)-dione (NHPY) with yellow fluorescence under UV light was synthesized. An eco-friendly flexographic ink prepared with NHPY as the pigment was coated on a UV dull paper and further printed on security paper as well as packaging papers and boards. When exposed to UV light, the printed samples showed yellow fluorescence. The light fastness, gloss, colorimetric results, and abrasion resistance of the printed samples proved that NHPY is a suitable fluorescent pigment for security printing applications.",

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AU - Bhagya, R. S.

AU - Muthamma, Kashmitha

AU - Sunil, Dhanya

AU - Shetty, Prakasha

AU - Kulkarni, Suresh D.

PY - 2023

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AB - Fluorescence-based materials that are affordable and easy to use for commercial anti-counterfeiting applications are in high demand. While exploring new fluorescent pigments, a pyrene-naphthalimide Schiff base, 5-hydroxy-2-((pyren-1-ylmethylene)amino)-1H-benzo[de]isoquinoline-1,3(2H)-dione (NHPY) with yellow fluorescence under UV light was synthesized. An eco-friendly flexographic ink prepared with NHPY as the pigment was coated on a UV dull paper and further printed on security paper as well as packaging papers and boards. When exposed to UV light, the printed samples showed yellow fluorescence. The light fastness, gloss, colorimetric results, and abrasion resistance of the printed samples proved that NHPY is a suitable fluorescent pigment for security printing applications.

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Pyrene-naphthalimide Schiff base as a fluorescent pigment in water-based security ink

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