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Zhášení fluorescence ve studiu agregačního chování koloidů / Fluorescence quenching in study of aggregation behavior of colloids

This work focuses on examination of hyaluronan-sulfactant aggregates in term of determination of aggregate number. The value of critical micellar concentration (CMC) cetyltrimethylammonium bromide (CTAB) in three different solvents (water, phosphate buffer and physiological solution). Next the effect of the native hyaluronan supplement on the value of CMC was examined. It wasfound out that the solvent has the biggest effect on the value of CMC whilst the hyaluronan supplement affects CMC only a little. The aggregate number (Nagg) CTAB and the effect of the native hyaluronan supplement were determined out by means of fluorescence quenching. Pyrene was used as a fluorescence probe. Iodine and cetylpyridinium chloride (CPC) were used as quenchers. Sulfactant was dissolved in three different solvents (water, phosphate buffer and physiological solution). Not only the hyaluronan supplement but also the used solvent has the strong effect on the value of the aggregate number. When using 10mM CTAB dissolved in physiological solution the value of Nagg was 119 ± 4 while the value was half in buffer. Then we found out that in most cases the hyaluronan supplement reduces the value of the aggregate number.

Identiferoai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:216659
Date January 2010
CreatorsSrholcová, Barbora
ContributorsHrdina,, Radim, Pekař, Miloslav
PublisherVysoké učení technické v Brně. Fakulta chemická
Source SetsCzech ETDs
LanguageCzech
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/masterThesis
Rightsinfo:eu-repo/semantics/restrictedAccess

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