TY - JOUR
T1 - Barbituric acid derivative as fluorescent pigment in water-based flexographic ink for security applications
AU - Sunil, Dhanya
AU - Muthamma, Kashmitha
AU - Kulkarni, Suresh D.
AU - Fernandes, Rikitha S.
AU - Dey, Nilanjan
N1 - Publisher Copyright:
© 2022, Institute of Chemistry, Slovak Academy of Sciences.
PY - 2023/1
Y1 - 2023/1
N2 - Securing genuine artifacts from counterfeiting is one of the major challenges in today’s rapidly developing area of technology. Despite large number of luminescent materials, easily synthesizable, photo/thermostable, and biocompatible fluorophores are still scarce in the literature. Hence, we have used an easily synthesizable, biocompatible, red-light emitting anthracene conjugated barbituric acid (AB) pigment for developing water-based fluorescent flexographic ink formulation. The pigment carrying twisted-π bridging electron donor (D) as well as acceptor (A) units with aggregation-induced emission feature displayed excellent stability against thermal treatment and mechanical grinding. The UV dull security paper, coated as well as printed with flexo ink showed red color in the daylight and pinkish-red fluorescence under UV light. The fast-drying prints demonstrated good adhesion, moderate photostability, good abrasion resistance, and fluorescence indicating its potential to be used for various applications in anti-counterfeiting, and optical devices. Graphical abstract: [Figure not available: see fulltext.].
AB - Securing genuine artifacts from counterfeiting is one of the major challenges in today’s rapidly developing area of technology. Despite large number of luminescent materials, easily synthesizable, photo/thermostable, and biocompatible fluorophores are still scarce in the literature. Hence, we have used an easily synthesizable, biocompatible, red-light emitting anthracene conjugated barbituric acid (AB) pigment for developing water-based fluorescent flexographic ink formulation. The pigment carrying twisted-π bridging electron donor (D) as well as acceptor (A) units with aggregation-induced emission feature displayed excellent stability against thermal treatment and mechanical grinding. The UV dull security paper, coated as well as printed with flexo ink showed red color in the daylight and pinkish-red fluorescence under UV light. The fast-drying prints demonstrated good adhesion, moderate photostability, good abrasion resistance, and fluorescence indicating its potential to be used for various applications in anti-counterfeiting, and optical devices. Graphical abstract: [Figure not available: see fulltext.].
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U2 - 10.1007/s11696-022-02455-y
DO - 10.1007/s11696-022-02455-y
M3 - Article
AN - SCOPUS:85137813951
SN - 0366-6352
VL - 77
SP - 119
EP - 127
JO - Chemical Papers
JF - Chemical Papers
IS - 1
ER -