R S Bhagya, Prakasha Shetty, Dhanya Sunil, Kashmitha Muthamma, S D Kulkarni
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Pyrene-based aggregation-induced emissive chalcone pigment in water-based flexographic ink for security printing
A significant scientific interest has been generated in developing chemical compounds with unique properties as colourants in security inks. A pyrene-based chalcone: (E)-1-(6-methoxynaphthalen-2-yl)-3-(pyren-1-yl) prop-2-en-1-one (PYNP) with aggregation-induced enhanced emission was prepared in search of smart fluorescent pigments and was characterized using spectral techniques. Water-based flexographic ink with PYNP pigment was formulated, and coats/prints were obtained on security printing paper and paperboards. The coated and printed substrates exhibited greenish-yellow fluorescence on excitation beneath UV light. Moreover, PYNP is an effective fluorescent pigment for security printing applications, as indicated by colourimetric values, good lightfastness, gloss and abrasion resistance of the prints.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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