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Lithography Based on Memory Effects Resulting from Photoinduced Self-Assembly of Pyrene Dimers in Thin Polymer Films

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    Lithography Based on Memory Effects Resulting from Photoinduced Self-Assembly of Pyrene Dimers in Thin Polymer Films
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    Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
    *E-mail: [email protected]
    †Present address: Holst Centre/TNO Science and Industry, High Tech Campus 31, 5656 AE, Eindhoven, Netherlands
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    Chemistry of Materials

    Cite this: Chem. Mater. 2009, 21, 17, 3933–3940
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    https://doi.org/10.1021/cm900731p
    Published August 10, 2009
    Copyright © 2009 American Chemical Society
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    Abstract

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    Pulsed laser irradiation of pyrene in thin films through lithographic masks leads to blue fluorescent images characteristic of pyrene excimer emission. The images are stable at room temperature and are readily observable using fluorescence microscopy. For a constant energy dose, the images are stronger and better resolved at the shorter laser wavelengths and cannot be recorded with continuous wavelength (CW) light sources. Images are easier to obtain with high Tg films, while polymers with Tg below room temperature image only when the laser also causes polymer cross-linking. It is proposed that laser excitation generates excited singlet pyrene and simultaneously causes a temperature change that facilitates diffusion and thus excimer formation. Following excited state (monomer and excimer) decay, the polymer matrix cools down and prevents the separation of the pyrene pairs, that are preserved by the rigid polymer matrix. Some of the images can be thermally erased by annealing above Tg. The method may find applications in imaging and information storage.

    Copyright © 2009 American Chemical Society

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    Supporting Information

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    Absorption spectra for the three polymer films in the 190−300 nm region; tables of digital color measurements based on fluorescence images; spectra of light sources used for flood exposure and for fluorescence excitation; TGA and DCS data for polymer FP. This material is available free of charge via the Internet at http://pubs.acs.org.

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    This article is cited by 7 publications.

    1. Hyun-Sook Jang, Ying Wang, Yu Lei, and Mu-Ping Nieh . Controllable Formation of Pyrene (C16H10) Excimers in Polystyrene/Tetrabutylammonium Hexafluorophosphate Films through Solvent Vapor and Temperature Annealing. The Journal of Physical Chemistry C 2013, 117 (3) , 1428-1435. https://doi.org/10.1021/jp3083634
    2. Noemí Alarcos, Boiko Cohen, Abderrazzak Douhal. A slowing down of proton motion from HPTS to water adsorbed on the MCM-41 surface. Physical Chemistry Chemical Physics 2016, 18 (4) , 2658-2671. https://doi.org/10.1039/C5CP04548G
    3. Daniela T. Marquez, Juan C. Scaiano. Plasmon induced self-assembly of gold nanorods in polymer films. Chemical Communications 2015, 51 (10) , 1911-1913. https://doi.org/10.1039/C4CC08261C
    4. Ming-Chia Li, Rong-Ming Ho, Yu-Der Lee. Photo-induced pyrene association in pyrene-labeled polymers for optical recording. Journal of Materials Chemistry C 2013, 1 (8) , 1601. https://doi.org/10.1039/c2tc00651k
    5. Fengxia Zhu, Didi Yang, Fang Zhang, Hexing Li. Amine-bridged periodic mesoporous organosilica nanospheres as an active and reusable solid base-catalyst for water-medium and solvent-free organic reactions. Journal of Molecular Catalysis A: Chemical 2012, 363-364 , 387-397. https://doi.org/10.1016/j.molcata.2012.07.015
    6. Yi‐Chun Kung, Wen‐Fu Lee, Sheng‐Huei Hsiao, Guey‐Sheng Liou. New polyimides incorporated with diphenylpyrenylamine unit as fluorophore and redox‐chromophore. Journal of Polymer Science Part A: Polymer Chemistry 2011, 49 (10) , 2210-2221. https://doi.org/10.1002/pola.24652
    7. Ming-Chia Li, Rong-Ming Ho, Yu-Der Lee. Photo-induced excimer formation of pyrene-labeled polymers for optical recording. Journal of Materials Chemistry 2011, 21 (8) , 2451. https://doi.org/10.1039/c0jm03543b
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    Chemistry of Materials

    Cite this: Chem. Mater. 2009, 21, 17, 3933–3940
    Click to copy citationCitation copied!
    https://doi.org/10.1021/cm900731p
    Published August 10, 2009
    Copyright © 2009 American Chemical Society
    Request reuse permissions

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