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| rdf:type
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| Description
| - Interaction of meso-tetrakis(4-sulphonatophenyl)porphine (TPPS4) with chitosan (Mr 400 kDa, N-acetyls 20 mol.%) was studied in aqueous solutions. UV-vis absorption and circular dichroism (CD) spectroscopic titration of 10 μmol l-1 TPPS4 with chitosan demonstrated that an addition of the polysaccharide at appropriate concentrations and pH values induce and support self-aggregation of the macrocycles. The mode of aggregation was strongly dependent on pH: stacking (H-type) aggregates predominated at weak acidic conditions (pH 4.8-6.8) and tilted (J-type) aggregates at pH 2.5. At the intermediate pH value (3.6) both types of TPPS4 aggregates were detected. High amount of chitosan (>0.05 mmol l-1 of GlcN) disrupts H-aggregates forming monomeric porphyrin-chitosan complexes (pH 3.6-6.8), while J-aggregates (pH 2.5) are stable even at very high chitosan concentrations. CD titration experiments confirmed the formation of optically active species of TPPS4 in the presence of chitosan. The complex nat
- Interaction of meso-tetrakis(4-sulphonatophenyl)porphine (TPPS4) with chitosan (Mr 400 kDa, N-acetyls 20 mol.%) was studied in aqueous solutions. UV-vis absorption and circular dichroism (CD) spectroscopic titration of 10 μmol l-1 TPPS4 with chitosan demonstrated that an addition of the polysaccharide at appropriate concentrations and pH values induce and support self-aggregation of the macrocycles. The mode of aggregation was strongly dependent on pH: stacking (H-type) aggregates predominated at weak acidic conditions (pH 4.8-6.8) and tilted (J-type) aggregates at pH 2.5. At the intermediate pH value (3.6) both types of TPPS4 aggregates were detected. High amount of chitosan (>0.05 mmol l-1 of GlcN) disrupts H-aggregates forming monomeric porphyrin-chitosan complexes (pH 3.6-6.8), while J-aggregates (pH 2.5) are stable even at very high chitosan concentrations. CD titration experiments confirmed the formation of optically active species of TPPS4 in the presence of chitosan. The complex nat (en)
- Interakce meso-tetrakis(4-sulphonatophenyl)porphinu s chitosanem (Mr 400 kDa, N-acetyls 20 mol.%) byla studovaná ve vodím prostředí. Spektroskopická titrace (UV-vis absorpční a CD) 10 μmol l-1 TPPS4 s chitosanem prokázala že určité koncentrace roztoku polysacharidu podporují vzniknuti vysoce uspořádaných struktur makrociklu. Typ uspořádaní je závislý na pH roztoku. Tak pH 2.5 podporují uspořádaní podle typu - J, když slabo-kysele prostředí (pH 4.8-6.8) podporují uspořádaní podle typu - H. Oba typy uspořádaní projevovali optickou aktivitu. (cs)
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| Title
| - Interaction of meso-tetrakis(4-sulphonatophenyl)porphine with chitosan in aqueous solutions
- Interaction of meso-tetrakis(4-sulphonatophenyl)porphine with chitosan in aqueous solutions (en)
- Interakce meso-tetrakis(4-sulphonatophenyl)porphinu s chitosanem ve vodním (cs)
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| skos:prefLabel
| - Interaction of meso-tetrakis(4-sulphonatophenyl)porphine with chitosan in aqueous solutions
- Interaction of meso-tetrakis(4-sulphonatophenyl)porphine with chitosan in aqueous solutions (en)
- Interakce meso-tetrakis(4-sulphonatophenyl)porphinu s chitosanem ve vodním (cs)
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| skos:notation
| - RIV/60461373:22340/07:00018392!RIV08-MSM-22340___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA203/02/0420), Z(MSM6046137305), Z(MSM6046137307)
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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
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22340/07:00018392
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - TPPS4; Chitosan; Aggregation; UV-vis absorption; Circular dichroism (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
| - Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Král, Vladimír
- Synytsya, Andriy
- Synytsya, Alla
- Volka, Karel
- Blafková, Petra
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| http://linked.open...n/vavai/riv/zamer
| |
| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
| |
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