Issue 35, 2011
From the journal:

Journal of Materials Chemistry

Diarylethene-based photochromic polyurethanes for multistate optical memories†

Giorgio Pariani,ab   Rossella Castagna,ac   Giovanni Dassa,a   Stephan Hermes,‡a   Claudio Vailati,a   Andrea Biancob  and  Chiara Bertarelli*ac  

* Corresponding authors

a Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”—Politecnico di Milano, piazza Leonardo da Vinci 32, Milano, Italy
E-mail: chiara.bertarelli@polimi.it
Fax: +390223993231
Tel: +390223993224

b INAF—Osservatorio Astronomico di Brera, via E. Bianchi 46, Merate, Italy

c Center for Nano Science and Technology (CNST) of IIT@PoliMi, via Pascoli 70/3, Milano, Italy

Abstract

Photochromic polyurethanes (PPUs) are synthesised by reaction between a diarylethene end-capped with hydroxyl groups and an aliphatic diisocyanate. In situpolymerisation provides amorphous films with remarkable optical properties. The possibility to vary the amount and the chemical structure of the photochromic monomer without affecting the reactivity of the polymerization allows one to tune in a wide range the optical properties of these films. In addition, different diarylethenes can be mixed together to give copolymers which may find application as photochromic layers for multistate optical memories. A setup for a non-destructive readout based on Raman signal is proposed.

Graphical abstract: Diarylethene-based photochromic polyurethanes for multistate optical memories

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Article information

DOI
https://doi.org/10.1039/C1JM11870F
Article type
Paper
Submitted
28 Apr 2011
Accepted
28 Jun 2011
First published
01 Aug 2011

J. Mater. Chem., 2011,21, 13223-13231

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Diarylethene-based photochromic polyurethanes for multistate optical memories

G. Pariani, R. Castagna, G. Dassa, S. Hermes, C. Vailati, A. Bianco and C. Bertarelli, J. Mater. Chem., 2011, 21, 13223 DOI: 10.1039/C1JM11870F

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