Issue 41, 2015

A 1,3,5-triazine based polymer as a nonlinear near-infrared antenna for two-photon activated volumetric optical memory devices

Abstract

The ability of a 1,3,5-triazine based polymer to work as a nonlinear near-infrared (NIR) antenna in functional optical materials is discussed. The push–pull polymer is composed of alternating electron acceptor cores of 2,4,6-tris(thiophen-2-yl)-1,3,5-triazine, bridged by electron donor groups of 9,9-dihexyl-9H-fluorene. It has been tailored for high two-photon absorption and efficient up-conversion of the excitation energy into fluorescence emission. These properties are here explored in the operation of prototypical storage material for volumetric nonlinear optical memory devices. Multilayer data storage is demonstrated in composite films of photochromic (PC) molecules doped with the polymer. The two-photon excitation of the polymer triggers a unidirectional isomerization of the PC molecules (a cycloreversion process from the closed to the open isomer) via Förster resonant energy transfer. Data recording with as little as 1 ms of exposure time and 1 mW of 740 nm radiation is accomplished.

Graphical abstract: A 1,3,5-triazine based polymer as a nonlinear near-infrared antenna for two-photon activated volumetric optical memory devices

Supplementary files

Article information

Article type
Paper
Submitted
10 Jul 2015
Accepted
06 Sep 2015
First published
07 Sep 2015

J. Mater. Chem. C, 2015,3, 10775-10782

Author version available

A 1,3,5-triazine based polymer as a nonlinear near-infrared antenna for two-photon activated volumetric optical memory devices

I. F. A. Mariz, F. Siopa, C. A. B. Rodrigues, C. A. M. Afonso, X. Chen, J. M. G. Martinho and E. M. S. Maçôas, J. Mater. Chem. C, 2015, 3, 10775 DOI: 10.1039/C5TC02085A

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