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Issue 41, 2015
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A 1,3,5-triazine based polymer as a nonlinear near-infrared antenna for two-photon activated volumetric optical memory devices

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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

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Publication details

The article was received on 10 Jul 2015, accepted on 06 Sep 2015 and first published on 07 Sep 2015


Article type: Paper
DOI: 10.1039/C5TC02085A
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Citation: J. Mater. Chem. C, 2015,3, 10775-10782

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    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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