Inkjet-Printable Hydrochromic Paper for Encrypting Information and Anticounterfeiting

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

91 Scopus Citations
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Author(s)

  • Varun Kumar Singh
  • Ramesh Kumar Chitumalla
  • Yaoxin Zhang
  • Yongjie Xi
  • Vijayvenkataramana Sanjairaj
  • Chun Zhang
  • Joonkyung Jang
  • Swee Ching Tan

Detail(s)

Original languageEnglish
Pages (from-to)33071-33079
Journal / PublicationACS Applied Materials and Interfaces
Volume9
Issue number38
Publication statusPublished - 27 Sept 2017
Externally publishedYes

Abstract

Developing rewritable papers has gathered immense interest in recent times in view of developing sustainability in print media without exhausting environmental resources. We herein present a rapid and facile procedure for the fabrication of a communication medium by treating the surface of a paper with synthetic organic molecules, after which plain water could be used as an ink to print and reprint numerous times on the treated paper before disposal. Interestingly, as the paper comes in contact with water, the molecules are driven to reorganize in a slip-stacked arrangement. This alters their ground and excited state properties by hydrogen-bond-assisted nonradiative decay, in which the associated changes are visible to the naked eye. The changes evolved are sensitive to the solubility parameter of the solvent and thermally reversible, thus linking the hydrochromic property to the paper. Against a background of concerns over a rise in counterfeiting and leaks of confidential information, prospects for encrypted communications and anticounterfeiting is herein demonstrated.

Research Area(s)

  • aggregation, anticounterfeiting, hydrochromic, rewritable, security printing

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Citation Format(s)

Inkjet-Printable Hydrochromic Paper for Encrypting Information and Anticounterfeiting. / Singh, Varun Kumar; Chitumalla, Ramesh Kumar; Ravi, Sai Kishore et al.
In: ACS Applied Materials and Interfaces, Vol. 9, No. 38, 27.09.2017, p. 33071-33079.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review