Synthesis and two-photon property studies of symmetrically substituted bisarylacetylene structures using functionalized quinoxalinoid units as the aryl substituents

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题名:	Synthesis and two-photon property studies of symmetrically substituted bisarylacetylene structures using functionalized quinoxalinoid units as the aryl substituents
作者:	林子超;Lin, Tzu-Chau;Liu, Yi-You;Li, May-Hui;Lee, Ying-Hsuan
贡献者:	理學院化學學系
关键词:	Absorption;Aromatic compounds;Broadband;Dyes;Femtosecond;Fluorescence;Indenoquinoxaline;Molecular structure;Optical power-limiting;Pyridopyrazine;Quinoxaline;Sonogashira reaction;Two-photon absorption
日期:	2014-01-01
上传时间:	2026-04-21 14:22:21 (UTC+8)
出版者:	Elsevier BV;Elsevier Ltd
摘要:	摘要： A series of symmetrically substituted multi-polar chromophores (1–3) based on the skeleton of bisarylacetylene using functionalized quinoxaline, indenoquinoxaline, and pyridopyrazine moieties as the aryl substituents has been synthesized and characterized for their two-photon absorption properties using femtosecond laser pulses as the probing tool. Under our experimental conditions, these model fluorophores are found to manifest strong and wide dispersed two-photon absorption in the near infrared (NIR) region. It is demonstrated that molecular structures with multi-branched π−frameworks incorporating functionalized quinoxalinoid units would possess large molecular nonlinear absorptivities within the studied spectral range. Optical power-limiting behavior in the femtosecond time domain of the indenoquinoxaline-derived dye molecule (2) from this model compound set was also investigated and the result indicates that such structural motif could be a useful approach for the molecular design towards strong two-photon absorbing material system for quick-responsive and broadband optical-control related applications. [Display omitted] •A series of symmetrically substituted multi-polar chromophores based on the skeleton of bisarylacetylene has been synthesized.•These model fluorophores are found to manifest strong and wide dispersed two-photon absorption in the near infrared (NIR) region.•Optical power-limiting behavior of a selected representative dye molecule is demonstrated. 出版者： Elsevier Ltd 出版日期： 2014-10-01 出處： Dyes and pigments, 2014-10, Vol.109, p.72-80 版權： 2014 Elsevier Ltd 識別號： ISSN: 0143-7208 識別號： EISSN: 1873-3743 識別號： DOI: 10.1016/j.dyepig.2014.04.035
显示于类别:	[化學學系] 期刊論文

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