Electronic Properties of Neutral Dyes in the Channels of Zeolite L: A Combined Spectroscopic and Quantum Chemical Study

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• 作者：Beate Bussemer ; Dirk Munsel ; Heike W&uuml ; nscher ; Gerhard J. Mohr ; Ulrich-Walter Grummt
• 刊名：Journal of Physical Chemistry B
• 出版年：2007
• 出版时间：January 11, 2007
• 年：2007
• 卷：111
• 期：1
• 页码：8 - 15
• 全文大小：629K
• 年卷期：v.111,no.1(January 11, 2007)
• ISSN：1520-5207

文摘

Three low molecular weight model compounds for poly(phenylene-ethynylene)s were inserted into the channelsof zeolite L by using gas phase insertion. The absorption and emission spectra in solution and dye/zeolite Lare 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 rankanalysis of the emission spectra gave three contributing species. Quantum chemical calculations provide differentconformations depending on the Si/Al distribution of the framework and the extraframework cations andattached protons.