Abstract：
:Various photosensitizers were grafted by conventional peptide coupling methods to functionalized silica with several macroscopic shapes (powders, films) or embedded in highly transparent and microporous silica xerogel monoliths. Owing to the transparency and free-standing shape of the monoliths, the transient species arising from irradiation of the PSs could be analyzed and were not strikingly different from those observed in solutions. The observed reactivity for either liquid-solid (α-terpinene oxygenation vs dehydrogenation) or gas-solid (dimethylsulfide, DMS, solvent-free oxidation) reactions was consistent with the properties of the excited states of the PSs under consideration. Immobilized anthraquinone-derived materials preferentially react in both cases by electron transfer from the substrate to the triplet state of the sensitizer, in spite of an efficient singlet oxygen production. The recently developed 9,14-dicyanobenzo[b]triphenylene-3-carboxylic acid, DBTP-COOH, efficiently reacts via energy transfer to yield singlet oxygen from its triplet state. It was shown to perform better than 9,10-dicyanoanthracene and rose bengal for DMS oxidation and α-terpinene photooxygenation to ascaridole, respectively. Thus, by a proper choice of the organic immobilized photocatalyst, it is possible to develop efficient and reusable materials, activated under visible light, for various applications and to tune the reaction pathway, opening the way to green oxidation processes.
journal_name
Photochem Photobioljournal_title
Photochemistry and photobiologyauthors
Ronzani F,Saint-Cricq P,Arzoumanian E,Pigot T,Blanc S,Oelgemöller M,Oliveros E,Richard C,Lacombe Sdoi
10.1111/php.12166subject
Has Abstractpub_date
2014-03-01 00:00:00pages
358-68issue
2eissn
0031-8655issn
1751-1097journal_volume
90pub_type
杂志文章abstract：:A concept has been presented whereby X-ray irradiation can be used to induce visible luminescence of chromophores such as porphyrins. The essential aspects of the idea have been demonstrated in a supramolecular assembly consisting of a water-dispersed polystyrene latex with an embedded scintillating compound, 2,5-diph...
journal_title：Photochemistry and photobiology
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doi：10.1111/j.1751-1097.1994.tb05052.x
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journal_title：Photochemistry and photobiology
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1995.tb09154.x
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1111/j.1751-1097.1996.tb02450.x
更新日期：1996-08-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1992.tb04274.x
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journal_title：Photochemistry and photobiology
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doi：10.1562/2003-11-19-ra.1
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journal_title：Photochemistry and photobiology
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更新日期：2011-09-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2011.01027.x
更新日期：2012-01-01 00:00:00
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journal_title：Photochemistry and photobiology
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doi：10.1111/j.1751-1097.2010.00806.x
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2007.00289.x
更新日期：2008-03-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.13008
更新日期：2019-01-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/0031-8655(1999)069<0364:dofapo>2.3.co;2
更新日期：1999-03-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.13013
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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：2009-03-01 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.tb01732.x
更新日期：1990-04-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1996.tb02421.x
更新日期：1996-07-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1993.tb02303.x
更新日期：1993-02-01 00:00:00
abstract：:Our recent study follows up an earlier one which demonstrated hypericin-mediated photocytotoxic effects on HT-29 adenocarcinoma cells by light fractionation with a longer dark pause between two unequal light doses (Sackova, A. [2005] Photochem. Photobiol.81, 1411-1416). Here, we present closer study on events invoked ...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2010.00788.x
更新日期：2010-11-01 00:00:00
abstract：:In the present study, photodynamic activity of a novel photosensitizer (PS), Chlorin e(6)-2.5 N-methyl-d-glucamine (BLC 1010), was evaluated using the chorioallantoic membrane (CAM) as an in vivo model. After intravenous (i.v.) injection of BLC 1010 into the CAM vasculature, the applicability of this drug for photodyn...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/2005-02-23-RA-448
更新日期：2005-11-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1111/php.12762
更新日期：2017-05-01 00:00:00
