Electronic properties of neutral dyes in the channels of zeolite L:: A combined spectroscopic and quantum chemical study

被引:19
作者
Bussemer, Beate [1 ]
Munsel, Dirk [1 ]
Wuenscher, Heike [1 ]
Mohr, Gerhard J. [1 ]
Grummt, Ulrich-Walter [1 ]
机构
[1] Univ Jena, Inst Phys Chem, D-07743 Jena, Germany
关键词
D O I
10.1021/jp064986w
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Three low molecular weight model compounds for poly(phenylene-ethynylene)s were inserted into the channels of zeolite L by using gas phase insertion. The absorption and emission spectra in solution and dye/zeolite L are reported. Two compounds show emission properties in zeolite L comparable to that in solution. In contrast, the bipyridine containing compound shows a red shift toward longer excitation wavelengths. Matrix rank analysis of the emission spectra gave three contributing species. Quantum chemical calculations provide different conformations depending on the Si/Al distribution of the framework and the extraframework cations and attached protons.
引用
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页码:8 / 15
页数:8
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