Effects of surfactants on the molecular aggregation of squaraine dye Sq-2Me in aqueous solutions

• Дата: 2009
• Автори: Yefimova, S.L., Guralchuk, G.Ya., Lebed', A.S., Sorokin, A.V., Malyukin, Yu.V., Kurilchenko, I.Yu.
• Формат: Стаття
• Мова: English
• Опубліковано: НТК «Інститут монокристалів» НАН України 2009
• Назва видання: Functional Materials
• Теми: Characterization and properties
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/138922
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Effects of surfactants on the molecular aggregation of squaraine dye Sq-2Me in aqueous solutions // S.L. Yefimova, G.Ya. Guralchuk, A.S. Lebed', A.V. Sorokin, Yu.V. Malyukin, I.Yu. Kurilchenko // Functional Materials. — 2009. — Т. 16, № 4. — С. 460-465. — Бібліогр.: 31 назв. — англ.

The influence of anionic surfactant, sodium dodecyl sulphate (SDS), and cationic one, cetylpyridinium bromide (CPB), on aggregation behavior of squaraine dye Sq-2Me has been studied in aqueous solutions by optical spectroscopy. It has been found that the addition of surfactants at concentrations higher than critical micelle one CIIJ,TcyTeK<lJemr:u.T into a DMF-W (95 %) solution does not prevent the dye aggregation. The structure of Sq-2Me aggregates formed in SDS and CPB micelles is discussed using the exciton theory. The results show that the optical properties and the Sq-2Me aggregate structure can be tuned using interaction with surfactant micelles of different nature.