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DC Field | Value | Language |
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dc.citation.startPage | 143631 | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 468 | - |
dc.contributor.author | Bak, Jae Min | - |
dc.contributor.author | Kim, Yejin | - |
dc.contributor.author | Park, Changhyun | - |
dc.contributor.author | Lee, Chanhee | - |
dc.contributor.author | Lee, Hyun-Wook | - |
dc.contributor.author | Lim, Bogyu | - |
dc.contributor.author | Jung, Seo-Hyun | - |
dc.contributor.author | Lee, Hyung-il | - |
dc.date.accessioned | 2023-12-21T11:53:09Z | - |
dc.date.available | 2023-12-21T11:53:09Z | - |
dc.date.created | 2023-07-20 | - |
dc.date.issued | 2023-07 | - |
dc.description.abstract | A new concept for dual-responsive one-dimensional (1D) photonic crystal (PC) multilayers is proposed herein. The novel PC-based systems rely on the humidity from the human breath and fluorescence triggered by Al3+ coordination to act as high-security anti-counterfeiting labels to be used in combination with a smartphone application. The dual-responsive patterned film is fabricated via the alternating deposition of photo-crosslinkable poly(2-vinylnaphthalene-co-benzophenone acrylate) and 51%-quaternized poly(4-vinylpyridine-co-benzophenone acrylate) onto a transparent polyethylene terephthalate substrate to obtain 1D PC multilayers, followed by the introduction of a poly([(2-hydroxybenzylidene)-4-vinylbenzohydrazide-co-benzophenonyl acrylate) top coating. The obtained system is then exposed to ultraviolet light irradiation through variously patterned masks. The patterned films exhibit vivid dual color transitions in high-humidity environments along with remarkable turn-on fluorescence, following the coordination of Al3+ ions upon spraying with a 1 wt% Al(NO3)3 solution. Notably, the efficacy of the combination between the two-step security function of the flexible patterned multilayer films and a smartphone app was also demonstrated. The first level of security involves the determination of the RGB color value before and after a color change triggered by blowing onto the film. The second level of security involves the revelation of hidden fluorescent shapes under ultraviolet light irradiation after Al (NO3)3 spraying. | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.468, pp.143631 | - |
dc.identifier.doi | 10.1016/j.cej.2023.143631 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.scopusid | 2-s2.0-85162215111 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/64981 | - |
dc.identifier.wosid | 001012088900001 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Dual-responsive photonic multilayers in combination with a smartphone application as high-security anti-counterfeiting devices | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental; Engineering, Chemical | - |
dc.relation.journalResearchArea | Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Anti-counterfeiting | - |
dc.subject.keywordAuthor | High-humidity | - |
dc.subject.keywordAuthor | Fluorescence | - |
dc.subject.keywordAuthor | 1D photonic crystals | - |
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