Issue 29, 2007
From the journal:

Journal of Materials Chemistry

Self-assembly of chromogenic dyes—a new mechanism for humidity sensors†

Jill Kunzelman,a   Brent R. Crenshawa  and  Christoph Weder*a  

* Corresponding authors

a Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, OH, USA
E-mail: christoph.weder@case.edu
Fax: (+1)216-368-4202

Abstract

The design, fabrication and characterization of a novel type of humidity sensing polymer are presented. The new material was prepared by incorporating a chromogenic, cyano-substituted oligo(p-phenylene vinylene) dye into a polyamide by quenching the blend from the melt. Exposure of these kinetically trapped, molecularly mixed blends to water plasticizes the amorphous phase and leads to aggregation of the dye molecules, concomitant with pronounced and irreversible changes of the material's absorption and fluorescence color.

Graphical abstract: Self-assembly of chromogenic dyes—a new mechanism for humidity sensors

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Article information

DOI
https://doi.org/10.1039/B705880B
Article type
Communication
Submitted
18 Apr 2007
Accepted
22 May 2007
First published
29 May 2007

J. Mater. Chem., 2007,17, 2989-2991

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Self-assembly of chromogenic dyes—a new mechanism for humidity sensors

J. Kunzelman, B. R. Crenshaw and C. Weder, J. Mater. Chem., 2007, 17, 2989 DOI: 10.1039/B705880B

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