Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 117, Issue 44, Pages 23034-23047Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp408556g
Keywords
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Funding
- Swiss Commission for Technology and Innovation (KTI/CTI) [12902.1 PFNM-NM]
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Electronic absorption and fluorescence spectra based on transmission measurements of thin layers obtained from new perylene-zeolite L composites and new dye1,dye2-zeolite L sandwich composites, the latter acting as antenna systems, have been investigated and analyzed. The influence of extra- and intraparticle self-absorption on the spectral shape and fluorescence quantum yield is discussed in detail. Due to its intraparticle origin, self-absorption and re-emission can often not be avoided in organized systems such as dye-zeolite L composites where a high density of chromophores is a prerequisite for obtaining the desired photophysical properties. We show, however, that it can be avoided or at least minimized by preparing dye1,dye2-zeolite L sandwich composites where donors are present in a much larger amount than the acceptors because they act as antenna systems.
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