Abstract：
:In this work, we have quantified for the first time the fluorescence and singlet oxygen quantum yields of a silicon(IV) phthalocyanine bound to the surface of zeolite L nanocrystals. The photophysical properties were correlated with the absorption spectra and the morphology of the nanoparticles, and most importantly, with the fraction of photoactive chromophores. By comparison with the fluorescence and singlet oxygen quantum yields of the free phthalocyaninate in dilute solution (ΦF = 0.50 and Φ∆ = 0.50, respectively), we conclude that for the most efficient nanoparticles nearly 80% of chromophores are active as monomeric units on the surface, as indicated by the corresponding quantum yields (ΦF = 0.40 and Φ∆ = 0.40). We further functionalized and raised the ζ-potential of the best performing nanomaterial to improve its water dispersibility. The functionalization was monitored by thermogravimetric analysis and time-of-flight secondary-ion mass spectrometry, and its influence on the photophysical properties was assessed. The resulting nanomaterials are capable of establishing stable suspensions in water while retaining the ability to form reactive oxygen species upon irradiation with red light. This provides a basis for the rational design of photoactive nanomaterials for photodynamic therapy or water decontamination.
journal_name
Photochem Photobioljournal_title
Photochemistry and photobiologyauthors
Grüner M,Siozios V,Hagenhoff B,Breitenstein D,Strassert CAdoi
10.1111/php.12141subject
Has Abstractpub_date
2013-11-01 00:00:00pages
1406-12issue
6eissn
0031-8655issn
1751-1097journal_volume
89pub_type
杂志文章abstract：:The photochemistry of Ru(bpy)(3)+2 in the presence of amines was investigated in water by laser flash photolysis. N,N'-Dimethylaniline and p-phenylenediamine quench the luminescent metal to ligand charge transfer (MLCT) excited state of the complex by an electron transfer reaction that produces the semireduced form Ru...
journal_title：Photochemistry and photobiology
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doi：10.1562/2005-05-31-RA-558
更新日期：2006-01-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.12206
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2009.00638.x
更新日期：2010-01-01 00:00:00
abstract：:Chaetopterus variopedatus has been studied for over a century in terms of its physiology, ecology and life history. One focus of research is on its intrinsic bioluminescent emissions, which can be observed as a blue light emitted from the extremities of individual body segments, or as a secreted mucus. Even though res...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1111/php.13221
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journal_title：Photochemistry and photobiology
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doi：10.1111/j.1751-1097.2007.00289.x
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pub_type： 杂志文章
doi：10.1111/php.12230
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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/php.13140
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1996.tb03024.x
更新日期：1996-03-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1111/j.1751-1097.1989.tb04181.x
更新日期：1989-09-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1562/2005-02-18-IR-445
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
doi：10.1111/j.1751-1097.1992.tb02227.x
更新日期：1992-11-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1994.tb05103.x
更新日期：1994-09-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：
更新日期：1998-07-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1991.tb03657.x
更新日期：1991-04-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.13032
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：10.1562/2003-11-11-RA.1
更新日期：2004-04-01 00:00:00
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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
doi：10.1562/2004-09-02-RA-301
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journal_title：Photochemistry and photobiology
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doi：10.1111/j.1751-1097.2007.00266.x
更新日期：2008-03-01 00:00:00
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journal_title：Photochemistry and photobiology
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doi：10.1562/0031-8655(2000)072<0146:IVNIRS>2.0.CO;2
更新日期：2000-07-01 00:00:00
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journal_title：Photochemistry and photobiology
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更新日期：2013-03-01 00:00:00
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journal_title：Photochemistry and photobiology
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doi：10.1111/j.1751-1097.1996.tb02438.x
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/0031-8655(2001)074<0760:qosmoo>2.0.co;2
更新日期：2001-12-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1111/php.12669
更新日期：2017-01-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2010.00782.x
更新日期：2010-09-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1990.tb04194.x
更新日期：1990-08-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1994.tb05000.x
更新日期：1994-01-01 00:00:00
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journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.13242
更新日期：2020-09-01 00:00:00
abstract：:Depletion of the ozone layer leads to increasing UV-B radiation on the earth's surface, which may affect weeds and their responses to herbicides. However, the effect of increased UV-B radiation on weeds and the interaction of weeds and herbicides are still obscure. The objective of this study was to compare glyphosate...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2012.01234.x
更新日期：2012-11-01 00:00:00
