Issue 7, 2020

Guest-conditioned multicolor writing on cellulose nanocrystal canvases

Abstract

Attractive ion–ion interactions allow trapping the tetracationic host cyclobis(paraquat-p-phenylene) (CBPQT4+) within solid matrices composed of negatively charged scaffolds, namely cellulose nanocrystals (CNCs). Through this supramolecular approach, we have fabricated CNC-CBPQT4+ films that change color upon sequenced guest uptake-molecular recognition. The evolution of color is conditioned to the selection of a guest and the self-assembly of an in-film host–guest complex. Here, we have used films and guests as synergetic paper and ink materials to generate responsive text and patterns that transform (disappear, change color, etc.) upon stimulation (temperature, pH, or competitive guests). This concept could be utilized for anticounterfeiting purposes, responsive inkjet printing, data encryption/decryption, and time-evolving patterns.

Graphical abstract: Guest-conditioned multicolor writing on cellulose nanocrystal canvases

Supplementary files

Article information

Article type
Paper
Submitted
14 Aug 2020
Accepted
16 Sep 2020
First published
09 Oct 2020
This article is Open Access
Creative Commons BY license

Mater. Adv., 2020,1, 2536-2541

Guest-conditioned multicolor writing on cellulose nanocrystal canvases

M. A. Soto, D. Zhang, Y. Xu, Y. Shi, B. O. Patrick, W. Y. Hamad and M. J. MacLachlan, Mater. Adv., 2020, 1, 2536 DOI: 10.1039/D0MA00606H

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