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231223s2008 xx |||||o 00| ||eng c |
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|a 10.1021/la8016547
|2 doi
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|a pubmed25n0606.xml
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|a (DE-627)NLM181828790
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|a (NLM)18729335
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Chemburu, Sireesha
|e verfasserin
|4 aut
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|a Light-induced biocidal action of conjugated polyelectrolytes supported on colloids
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|c 2008
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 28.10.2008
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|a Date Revised 01.10.2008
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a A series of water soluble, cationic conjugated polyelectrolytes (CPEs) with backbones based on a poly(phenylene ethynylene) repeat unit structure and tetraakylammonium side groups exhibit a profound light-induced biocidal effect. The present study examines the biocidal activity of the CPEs, correlating this activity with the photophysical properties of the polymers. The photophysical properties of the CPEs are studied in solution, and the results demonstrate that direct excitation produces a triplet excited-state in moderate yield, and the triplet is shown to be effective at sensitizing the production of singlet oxygen. Using the polymers in a format where they are physisorbed or covalently grafted to the surface of colloidal silica particles (5 and 30 microm diameter), we demonstrate that they exhibit light-activated biocidal activity, effectively killing Cobetia marina and Pseudomonas aeruginosa. The light-induced biocidal activity is also correlated with a requirement for oxygen suggesting that interfacial generation of singlet oxygen is the crucial step in the light-induced biocidal activity
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Anti-Bacterial Agents
|2 NLM
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|a Colloids
|2 NLM
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|a Electrolytes
|2 NLM
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|a Polymers
|2 NLM
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|a Singlet Oxygen
|2 NLM
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|a 17778-80-2
|2 NLM
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|a Corbitt, Thomas S
|e verfasserin
|4 aut
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|a Ista, Linnea K
|e verfasserin
|4 aut
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|a Ji, Eunkyung
|e verfasserin
|4 aut
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|a Fulghum, Julia
|e verfasserin
|4 aut
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|a Lopez, Gabriel P
|e verfasserin
|4 aut
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| 700 |
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|a Ogawa, Katsu
|e verfasserin
|4 aut
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|a Schanze, Kirk S
|e verfasserin
|4 aut
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|a Whitten, David G
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1991
|g 24(2008), 19 vom: 07. Okt., Seite 11053-62
|w (DE-627)NLM098181009
|x 0743-7463
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|g volume:24
|g year:2008
|g number:19
|g day:07
|g month:10
|g pages:11053-62
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