Synthesis and two-photon absorption properties of symmetrical chromophores derived from 2,3,5-trisubstituted quinoxaline units

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题名:	Synthesis and two-photon absorption properties of symmetrical chromophores derived from 2,3,5-trisubstituted quinoxaline units
作者:	林子超;Lin, Tzu-Chau;Chien, Wei;Liu, Che-Yu;Tsai, Ming-Yu;Huang, Yu-Jheng
贡献者:	理學院化學學系
关键词:	Chromophores;Fluorescence;Lasers;Nonlinear optics;Quinoxaline;Two-photon absorption
日期:	2013-07-01
上传时间:	2026-04-21 14:09:52 (UTC+8)
出版者:	Wiley-VCH Verlag;Weinheim: WILEY-VCH Verlag
摘要:	摘要： A set of symmetrically substituted multibranched chromophores composed of three quinoxaline‐based congeners has been synthesized and experimentally shown to possess strong and widely dispersed two‐photon absorptivities in the visible to near‐IR region under the irradiation of femtosecond and nanosecond laser pulses. The electronic properties of the central π bridges incorporated into the final structures are closely connected to the molecular two‐photon activities of these model compounds. Effective optical‐power attenuation and stabilization behaviors in the nanosecond time domain of these dye molecules were also investigated. The structural motif of these compounds provides a useful approach for the molecular design of strong two‐photon absorbing material systems with the potential for quick‐responsive and broadband optical‐control related applications, particularly for long‐duration laser pulses in the near‐IR region. A multipolar chromophore set composed of three analogues with various central π bridges and functionalized quinoxaline moieties as the major building units possesses strong and widely dispersed molecular two‐photon absorption. The potential of these compounds as effective optical power limiters and stabilizers is also demonstrated. 其他題名： Eur. J. Org. Chem 出版者： Weinheim: WILEY-VCH Verlag 出版日期： 2013-07 出處： European journal of organic chemistry, 2013-07, Vol.2013 (20), p.4262-4269 資源來源： Wiley Online Library - AutoHoldings Journals 版權： Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim 版權： Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 識別號： ISSN: 1434-193X 識別號： EISSN: 1099-0690 識別號： DOI: 10.1002/ejoc.201300345
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