Synthesis and Ultrafast Broadband Optical Limiting Properties of a Two-Branched Twistacene
A novel two-branched twistacene (<b>PyDN</b>) has been designed and synthesized for application on ultrafast optical limiting. This twistacene exhibits excellent two photon absorption and two photon absorption-induced excited singlet state absorption, which was systematically investigate...
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MDPI AG
2022-06-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/11/3564 |
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| author | Yanbing Han Jinchong Xiao Xingzhi Wu Yuxiao Wang Xueru Zhang Yinglin Song |
| author_facet | Yanbing Han Jinchong Xiao Xingzhi Wu Yuxiao Wang Xueru Zhang Yinglin Song |
| author_sort | Yanbing Han |
| collection | DOAJ |
| description | A novel two-branched twistacene (<b>PyDN</b>) has been designed and synthesized for application on ultrafast optical limiting. This twistacene exhibits excellent two photon absorption and two photon absorption-induced excited singlet state absorption, which was systematically investigated with a femtosecond Z-scan experiment, transient absorption spectrum, and two-photon excited fluorescence experiments. The admirable two photon absorption is attributed to the high degree of π electron delocalization in twistacene which is caused by introduction of two strong donors. The excited singlet state absorption cooperates with two-photon absorption to provide an excellent ultrafast optical limiting behavior with high linear transmittance, where the thresholds are 2.3–5.3 mJ/cm<sup>2</sup> in the spectral region of 532–800 nm of femtosecond laser and 133 mJ/cm<sup>2</sup> for picosecond pulse at 532 nm. These thresholds are lower than that of most of the optical limiters reported previously, which indicates <b>PyDN</b> is a promising candidate for ultrafast optical limiting. |
| first_indexed | 2024-03-10T01:04:05Z |
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| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T01:04:05Z |
| publishDate | 2022-06-01 |
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| series | Molecules |
| spelling | doaj.art-ffb73d87d2c44ac3add174ca6c4ba76c2023-11-23T14:30:50ZengMDPI AGMolecules1420-30492022-06-012711356410.3390/molecules27113564Synthesis and Ultrafast Broadband Optical Limiting Properties of a Two-Branched TwistaceneYanbing Han0Jinchong Xiao1Xingzhi Wu2Yuxiao Wang3Xueru Zhang4Yinglin Song5Department of Physics, Harbin Institute of Technology, Harbin 150001, ChinaKey Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, ChinaJiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, ChinaDepartment of Physics, Harbin Institute of Technology, Harbin 150001, ChinaDepartment of Physics, Harbin Institute of Technology, Harbin 150001, ChinaDepartment of Physics, Harbin Institute of Technology, Harbin 150001, ChinaA novel two-branched twistacene (<b>PyDN</b>) has been designed and synthesized for application on ultrafast optical limiting. This twistacene exhibits excellent two photon absorption and two photon absorption-induced excited singlet state absorption, which was systematically investigated with a femtosecond Z-scan experiment, transient absorption spectrum, and two-photon excited fluorescence experiments. The admirable two photon absorption is attributed to the high degree of π electron delocalization in twistacene which is caused by introduction of two strong donors. The excited singlet state absorption cooperates with two-photon absorption to provide an excellent ultrafast optical limiting behavior with high linear transmittance, where the thresholds are 2.3–5.3 mJ/cm<sup>2</sup> in the spectral region of 532–800 nm of femtosecond laser and 133 mJ/cm<sup>2</sup> for picosecond pulse at 532 nm. These thresholds are lower than that of most of the optical limiters reported previously, which indicates <b>PyDN</b> is a promising candidate for ultrafast optical limiting.https://www.mdpi.com/1420-3049/27/11/3564twistacenesoptical limitingtwo photon absorptionexcited singlet state absorption |
| spellingShingle | Yanbing Han Jinchong Xiao Xingzhi Wu Yuxiao Wang Xueru Zhang Yinglin Song Synthesis and Ultrafast Broadband Optical Limiting Properties of a Two-Branched Twistacene Molecules twistacenes optical limiting two photon absorption excited singlet state absorption |
| title | Synthesis and Ultrafast Broadband Optical Limiting Properties of a Two-Branched Twistacene |
| title_full | Synthesis and Ultrafast Broadband Optical Limiting Properties of a Two-Branched Twistacene |
| title_fullStr | Synthesis and Ultrafast Broadband Optical Limiting Properties of a Two-Branched Twistacene |
| title_full_unstemmed | Synthesis and Ultrafast Broadband Optical Limiting Properties of a Two-Branched Twistacene |
| title_short | Synthesis and Ultrafast Broadband Optical Limiting Properties of a Two-Branched Twistacene |
| title_sort | synthesis and ultrafast broadband optical limiting properties of a two branched twistacene |
| topic | twistacenes optical limiting two photon absorption excited singlet state absorption |
| url | https://www.mdpi.com/1420-3049/27/11/3564 |
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