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Description
| - The variations of calix[4] arene linkages between phenolic units and of the cationic substituents on the porphyrin periphery affect modes of interaction and photophysical parameters of porphyrin/calixarene complexes. 5,10,15,20-Tetrakis(N-methylpyridinium-2-yl)porphyrin (TMPyP2) forms stable complexes with tetrasulfonated calix[4]arene, thiacalix[4]arene and sulfonylcalix[4]arene of the 1:1 stoichiometry with the binding constants above 10(6),(9.3 +/- 0.9) x 10(5) and (8.3 +/- 0.8) x 10(4) M-1, respectively. We suggest that quenching of the singlet and triplet states of TMPyP2 involves fast electron transfer between excited singlet and triplet porphyrin states and phenolates. Surprisingly, both 5,10,15,20-tetrakis(N-methylpyridinium4-yl)porphyrin (TMPyP4) and 5,10,15,20-tetrakis(4-trimethylammoniophenyl)porphyrin (TMAPP) behave differently. After binding of calixarenes nonspecific extended self-assemblies with a random arrangement of the porphyrin units are formed as confirmed by UV-vis, fluorescence
- The variations of calix[4] arene linkages between phenolic units and of the cationic substituents on the porphyrin periphery affect modes of interaction and photophysical parameters of porphyrin/calixarene complexes. 5,10,15,20-Tetrakis(N-methylpyridinium-2-yl)porphyrin (TMPyP2) forms stable complexes with tetrasulfonated calix[4]arene, thiacalix[4]arene and sulfonylcalix[4]arene of the 1:1 stoichiometry with the binding constants above 10(6),(9.3 +/- 0.9) x 10(5) and (8.3 +/- 0.8) x 10(4) M-1, respectively. We suggest that quenching of the singlet and triplet states of TMPyP2 involves fast electron transfer between excited singlet and triplet porphyrin states and phenolates. Surprisingly, both 5,10,15,20-tetrakis(N-methylpyridinium4-yl)porphyrin (TMPyP4) and 5,10,15,20-tetrakis(4-trimethylammoniophenyl)porphyrin (TMAPP) behave differently. After binding of calixarenes nonspecific extended self-assemblies with a random arrangement of the porphyrin units are formed as confirmed by UV-vis, fluorescence (en)
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Title
| - Porphyrin/calixarene self-assemblies in aqueous solution
- Porphyrin/calixarene self-assemblies in aqueous solution (en)
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skos:prefLabel
| - Porphyrin/calixarene self-assemblies in aqueous solution
- Porphyrin/calixarene self-assemblies in aqueous solution (en)
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skos:notation
| - RIV/60461373:22310/08:00021378!RIV10-MSM-22310___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GA203/06/1244), P(GA203/07/1424), P(KAN100500652), P(LC06063), S, Z(AV0Z40320502), Z(AV0Z40400503), Z(MSM0021620857)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22310/08:00021378
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - cationic porphyrin; calix[4]arene; thiacalix[4]arene; sulfonylcalix[4]arene; photophysics; self-assemblies; electron transfer (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of Photochemistry and Photobiology A: Chemistry
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Hof, Martin
- Kubát, Pavel
- Lang, Kamil
- Matějíček, Pavel
- Sýkora, Jan
- Janda, Pavel
- Procházka, Karel
- Lhoták, Pavel
- Zelinger, Zdenek
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http://linked.open...ain/vavai/riv/wos
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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http://localhost/t...ganizacniJednotka
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