Self-assembled triphenylamine-hexaazatriphenylene two-photon absorption dyes
Self-assembled triphenylamine-hexaazatriphenylene two-photon absorption dyes
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DOI：
10.1016/j.tet.2012.10.070
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发表时间：
2013-01-07
期刊：
影响因子：
2.1
通讯作者：
Kamada, Kenji
中科院分区：
文献类型：
--
作者：
Ishi-i, Tsutomu;Amemori, Shogo;Kamada, Kenji
本文报道了含六个给电子基团的三（菲）六氮杂苯并菲（TPHAT-C）和三（菲咯啉）六氮杂苯并菲（TPHAT-N）的自组装和双光子吸收性质。在H-1 NMR谱中，观察到的线加宽效应，所产生的自组装聚集。在动态光散射中检测到数百个纳米级聚集体。紫外维斯单光子吸收光谱和单光子激发荧光光谱表明TPHAT分子存在一维聚集。在自组装TPHAT体系中观察到双光子吸收截面的增强。双光子吸收性质的顺序与聚集性质的顺序一致。(C)2012爱思唯尔有限公司保留所有权利。
This paper reports the self-assembling and two-photon absorption natures of donor acceptor molecules, tri(phenanthro)hexaazatriphenylene (TPHAT-C) and tri(phenanthrolino)hexaazatriphenylene (TPHAT-N), bearing six electron-donating moieties. In the H-1 NMR spectra, a line-broadening effect, arising from self-assembled aggregation was observed. Several hundred nanometer scale aggregates were detected in dynamic light scattering. The one-dimensional aggregation of the TPHAT molecules was indicated by the concentration dependence in UV/vis one-photon absorption and one-photon excited fluorescence spectroscopies. An enhancement of the two-photon absorption cross-section was observed in the self-assembled TPHAT system. The order of the two-photon absorption nature is in agreement with the order of the aggregative nature. (C) 2012 Elsevier Ltd. All rights reserved.