Abstract:
:Photoactive materials based on dye molecules incorporated into thin films or bulk solids are useful for applications as photosensitization, photocatalysis, solar cell sensitization and fluorescent labeling, among others. In most cases, high concentrations of dyes are desirable to maximize light absorption. Under these circumstances, the proximity of dye molecules leads to the formation of aggregates and statistical traps, which dissipate the excitation energy and lower the population of excited states. The search for enhancement of light collection, avoiding energy wasting requires accounting the photophysical parameters quantitatively, including the determination of quantum yields, complicated by the presence of light scattering when particulate materials are considered. In this work we summarize recent advances on the photophysics of dyes in light-scattering materials, with particular focus on the effect of dye concentration. We show how experimental reflectance, fluorescence and laser-induced optoacoustic spectroscopy data can be used together with theoretical models for the quantitative evaluation of inner filter effects, fluorescence and triplet formation quantum yields and energy transfer efficiencies.
journal_name
Photochem Photobioljournal_title
Photochemistry and photobiologyauthors
Rodríguez HB,San Román Edoi
10.1111/php.12107subject
Has Abstractpub_date
2013-11-01 00:00:00pages
1273-82issue
6eissn
0031-8655issn
1751-1097journal_volume
89pub_type
杂志文章abstract::We have previously demonstrated the ability of UVC (254 nm) radiation to induce asynchronous polyoma replication in rat fibroblast cells (H3 line) that contain an integrated copy of polyoma virus. In the present study we show that general purpose lamps can induce polyoma replication in these cells as well. The amount ...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1993.tb09559.x
更新日期:1993-08-01 00:00:00
abstract::The individual tryptophanyl contributions to the near-ultraviolet dichroic activity of apomyoglobin in its native conformation have been resolved. This was accomplished by comparing the spectra of two classes of apomyoglobin with different aromatic residue contents and observing the effect of a specific modification o...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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abstract::2-Aminoacetophenone (AAP) was recognized as the key compound for the so-called untypical aging off-flavor (UTA) in Vitis vinifera wines. In this study, it was shown that AAP can be formed by photooxidation of free and protein-bound tryptophan (TRP) in combination with a subsequent storage in model wine. Solutions of T...
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journal_title:Photochemistry and photobiology
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1562/0031-8655(2003)078<0241:cacacb>2.0.co;2
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journal_title:Photochemistry and photobiology
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doi:
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1562/2005-05-10-RA-522
更新日期:2005-09-01 00:00:00
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journal_title:Photochemistry and photobiology
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journal_title:Photochemistry and photobiology
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doi:
更新日期:1999-09-01 00:00:00
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journal_title:Photochemistry and photobiology
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更新日期:1995-11-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/php.12505
更新日期:2015-11-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章,评审
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更新日期:2017-07-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1990.tb01721.x
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