TY - JOUR
T1 - Pyrene-naphthalimide Schiff base as a fluorescent pigment in water-based security ink
AU - Bhagya, R. S.
AU - Muthamma, Kashmitha
AU - Sunil, Dhanya
AU - Shetty, Prakasha
AU - Kulkarni, Suresh D.
N1 - Funding Information:
We thank Mr. P.J Anand and Dr. Shivananda Wagle from Manipal Technologies limited for providing the materials and laboratory facilities for ink formulation and printing.
Publisher Copyright:
© 2023, The Author(s).
PY - 2023/9
Y1 - 2023/9
N2 - 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.
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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U2 - 10.1007/s11696-023-02827-y
DO - 10.1007/s11696-023-02827-y
M3 - Article
AN - SCOPUS:85153077262
SN - 0366-6352
VL - 77
SP - 4905
EP - 4912
JO - Chemical Papers
JF - Chemical Papers
IS - 9
ER -