RT Journal Article
T1 Reversible Optical Data Storage via Two-Photon Micropatterning of o‑Carboranes-Embedded Switchable Materials
A1 Abdallah, Stephania
A1 Mhanna, Rana
A1 Cabrera González, Justo Enrique
A1 Núñez, Rosario
A1 Khitous, Amine
A1 Morlet-Savary, Fabrice
A1 Soppera, Olivier
A1 Versace, Davy-Louis
A1 Malval, Jean-Pierre
AB Two-photon polymerization (2PP) constitutes a powerful light-triggered 3D stereolithography, allowing the fabrication of micro- or nanostructures with spatially encoded functionalities. In the present report, we take advantage of this programmable property in order to develop a photoresist authorizing the direct 2PP-lithography of luminescent switchable μ-structures. In this single step processing method, we highlight the pivotal role of a quadrupolar o-caborane initiator comprising a 9, 10-disubstituted anthracene core capable of chemically entrap oxygen-inhibiting species during the free radical two-photon initiation step. Such an O2 sequestration approach not only enhances the two-photon initiation performance of the polymerization, but also generates a non-luminescent endoperoxide by-product embedded in the polymerized macrostructure. Interestingly, simple heating of the final materials promotes endoperoxide thermolysis, resulting in the recovery of the luminescent o-carborane dye. This original luminescence turn OFF/ON property exhibits excellent fatigue resistance through a large number of alternated thermal and light stimuli cycles. The potential of this direct laser writing strategy for reversible data storage applications is finally demonstrated by the two-photon patterning of a series of matricially organized μ-structures used as rewritable binary optical memories which can be easily encoded on demand.
PB American Chemical Society
YR 2023
FD 2023-08-14
LK https://hdl.handle.net/20.500.14352/98273
UL https://hdl.handle.net/20.500.14352/98273
LA eng
NO Ministerio de Ciencia, Innovación y Universidades(España)
NO Severo Ochoa Program for Centers of Excellence
NO Generalitat de Catalunya
DS Docta Complutense
RD 26 jul 2024