Degenerate two-photon absorption and effective optical-power-limiting properties of multipolar chromophores derived from 2,3,8-trisubstituted indenoquinoxaline

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题名:	Degenerate two-photon absorption and effective optical-power-limiting properties of multipolar chromophores derived from 2,3,8-trisubstituted indenoquinoxaline
作者:	林子超;Lin, Tzu-Chau;Guo, Fang-Ling;Li, May-Hui;Liu, Che-Yu
贡献者:	理學院化學學系
关键词:	absorption;Chemistry;chromophores;Heck reaction;indenoquinoxalines;nonlinear optics
日期:	2013-09-01
上传时间:	2026-04-21 14:11:32 (UTC+8)
出版者:	John Wiley and Sons Ltd;Weinheim: WILEY-VCH Verlag
摘要:	摘要： Two analogous multipolar chromophores (1 and 2) that contained 2,3,8‐trisubstituted indenoquinoxaline moieties have been synthesized and characterized for their two‐photon absorption properties, both in the femtosecond and nanosecond time regimes. We demonstrated that their multi‐branched framework structures, which incorporated appropriately functionalized indenoquinoxaline units, afforded large molecular nonlinear absorptivities within the studied spectroscopic range. Effective optical‐power‐limiting and stabilization behaviors in the nanosecond regime of dye molecule (2) were also investigated and the results indicated that such a structural motif could be a useful approach to the molecular design of highly active two‐photon systems for quick‐response and related broadband optical‐suppressing applications, in particular for confronting laser pulses of a long duration. In pole position: Two multipolar chromophores that were derived from 2,3,8‐functionalized indenoquinoxaline units manifest strong and wide dispersed two‐photon absorption (2PA) in the NIR region under the irradiation of femtosecond laser pulses. Moreover, these model fluorophores could act as effective power‐limiters/stabilizers against nanosecond laser pulses within the same spectroscopic regime. 其他題名： Chem. Asian J 出版者： Weinheim: WILEY-VCH Verlag 出版日期： 2013-09 出處： Chemistry, an Asian journal, 2013-09, Vol.8 (9), p.2102-2110 版權： Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim 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: 1861-4728 識別號： ISSN: 1861-471X 識別號： EISSN: 1861-471X 識別號： DOI: 10.1002/asia.201300223 識別號： PMID: 23744812
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