Optical limiting with soluble two-photon absorbing quadrupoles: Structure-property relationships
Optical limiting with soluble two-photon absorbing quadrupoles: Structure-property relationships
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DOI：
10.1016/j.cplett.2005.10.033
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发表时间：
2006-01-10
影响因子：
2.8
通讯作者：
Blanchard-Desce, M
中科院分区：
文献类型：
--
作者：
Charlot, M;Izard, N;Blanchard-Desce, M
研究了由带有电活性外围基团的共轭主链构建的一系列双光子吸收四极杆在可见光区域的光功率限制。非线性吸收实验表明，这些分子在 ns 范围内的短脉冲 (3 ns) 下表现出明显的非线性行为。可以推导出结构-性能关系，强调共轭连接器和端基在提高光限幅效率方面的作用。推推系统比拉拉系统更有效，但代价是透明度降低。吡啶-At-氧化物是作为供体和受体端基协同作用的末端部分，可提高效率/透明度的权衡。 (c) 2005 Elsevier B.V. 保留所有权利。
The optical power limiting in the visible region of a series of two-photon absorbing quadrupoles built from conjugated backbones bearing electro-active peripheral groups was investigated. Nonlinear absorption experiments demonstrate that these molecules show marked nonlinear behaviour for short pulses (3 ns) in the ns regime. Structure-property relationships could be derived, emphasizing the role of the conjugated connectors and of the end-groups for improving the optical limiting efficiency. Push-push systems are more efficient than pull-pull systems, but at the expense of reduced transparency. Pyridine-At-oxides, terminal moieties which act in synergy as both donor and acceptor end-groups, lead to improved efficiency/transparency trade-off. (c) 2005 Elsevier B.V. All rights reserved.