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Panchromatic Chromophore Mixtures in an AlPO4-5 Molecular Sieve: Spatial Separation Effects and Energy Transfer Cascades

机译:AlPO4-5分子筛中的全色发色团混合物:空间分离效应和能量转移级联。

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摘要

Dye-loaded AlPO_4-5 single crystals were prepared by microwave-assisted hydrothermal synthesis from a batch, containing a mixture of three chromophores (Coumarin 40, Rhodamine BE50, and Oxazine 1) differing in their absorption range, molecular dimensions, and solubilities. Confocal fluorescence images reveal a spatial separation effect of the dye molecules, where the slimmer, more-soluble dye molecule (Coumarin 40) is uniformly distributed in the body of the single crystal, and the bulky and/or less-soluble ones (Rhodamine BE50, Oxazine 1) are situated in distinct domains. Visible spectra show good panchromatic absorption of visible light. Fluorescence lifetime measurements indicate the presence of an energy transfer cascade of the entirely fixed dye molecules from Coumarin 40 to Oxazine 1. The transfer mechanism is predominantly radiative.
机译:含染料的AlPO_4-5单晶是通过微波辅助水热合成从一批中制备的,该批晶体包含三种生色团(Coumarin 40,Rhodamine BE50和Oxazine 1)的混合物,它们的吸收范围,分子尺寸和溶解度不同。共聚焦荧光图像揭示了染料分子的空间分离作用,其中纤细,易溶的染料分子(Coumarin 40)均匀分布在单晶体内,而大体积和/或难溶的染料分子(若丹明BE50 ,恶嗪1)位于不同的域中。可见光谱显示可见光的良好全色吸收。荧光寿命测量表明存在完全固定的染料分子从香豆素40到恶嗪1的能量转移级联。转移机制主要是辐射性的。

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  • 来源
    《Advanced Functional Materials》 |2004年第3期|p. 269-276|共8页
  • 作者单位

    Institut fur Angewandte und Physikalische Chemie, Universitat Bremen, P.O. Box 330440, D-28334 Bremen, Germany;

    Department Chemie, Ludwigs-Maximilians-Universitat Munchen, Butenandtstr. 11 (Haus E), D-81377 Munchen, Germany;

    Department Chemie, Ludwigs-Maximilians-Universitat Munchen, Butenandtstr. 11 (Haus E), D-81377 Munchen, Germany;

    Institut fur Angewandte und Physikalische Chemie, Universitat Bremen, P.O. Box 330440, D-28334 Bremen, Germany;

    1Institut fur Organische und Makromolekulare Chemie, Universitat Bremen, P.O. Box 330440, D-28334 Bremen, Germany;

    Institut fur Angewandte und Physikalische Chemie, Universitat Bremen, P.O. Box 330440, D-28334 Bremen, Germany;

    Department Chemie, Ludwigs-Maximilians-Universitat Munchen, Butenandtstr. 11 (Haus E), D-81377 Munchen, Germany;

    1Institut fur Organische und Makromolekulare Chemie, Universitat Bremen, P.O. Box 330440, D-28334 Bremen, Germany;

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  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
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