Water-based flexographic ink using chalcones exhibiting aggregation-induced enhanced emission for anti-counterfeit applications
| Autor: | Shivananda Wagle, Dhanya Sunil, Suresh D. Kulkarni, Prinston Melroy Lewis, Dhananjaya Kekuda, Prakasha Shetty, Sneha Kagatikar, R S Bhagya |
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| Rok vydání: | 2021 |
| Předmět: |
Chalcone
Materials science Inkwell Flexographic ink Condensed Matter Physics Gloss (optics) Fluorescence Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry.chemical_compound Security printing Pigment Chemical engineering chemistry visual_art Materials Chemistry visual_art.visual_art_medium Pyrene Physical and Theoretical Chemistry Spectroscopy |
| Zdroj: | Journal of Molecular Liquids. 344:117974 |
| ISSN: | 0167-7322 |
| Popis: | In pursuit of fluorescent pigments, a pyrene-based chalcone 1-(4-chlorophenyl)-3-(3a1,6,8a,10a-tetrahydropyrene-1-yl)prop-2-en-1-one (CPP), which exhibited aggregation-induced enhanced emission was synthesized. Water-based eco-friendly flexographic inks were formulated using CPP (in batch ink) and Luminous yellow RG-3 (in standard ink) as pigments. The batch and standard inks were coated on security paper and printed on security and packaging papers as well as boards. The printed substrates displayed yellow fluorescence upon excitation under UV light. The gloss, light-fastness, abrasion resistance and colorimetric values of the batch ink were superior to that of standard ink. The study revealed the potential of CPP as a fluorescent pigment for security printing applications, optical-electronic devices such as transistors, anti-counterfeiting labels, etc. |
| Databáze: | OpenAIRE |
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