Effects of Subzero Temperatures on Fluorescent Probes Sequestered within Aerosol-OT Reverse Micelles

Autor:	Sheila N. Baker, Chase A. Munson, Frank V. Bright, Gary A. Baker
Rok vydání:	2004
Předmět:	Chemistry Sodium Analytical chemistry chemistry.chemical_element Surfaces and Interfaces Condensed Matter Physics Fluorescence Micelle Freezing point Aerosol OT Electrochemistry Molecule General Materials Science Emission spectrum Spectroscopy Fluorescence anisotropy
Zdroj:	Langmuir. 20:1551-1557
ISSN:	1520-5827 0743-7463
Popis:	We report on the effects of temperature (+30 to −100 °C) and water loading on the steady-state fluorescence from four fluorescent probe molecules when they are sequestered within the interior of sodium bis(2-ethyl-1-hexyl) sulfosuccinate (Aerosol OT, AOT) reverse micelles. Each probe locates itself to different average microenvironments within the reverse micelle, and these individual microenvironments behave differently to changes in the molar ratio of water-to-AOT (R) and temperature. Changes in probe steady-state fluorescence emission spectra or fluorescence anisotropy indicate that “freezing” occurs within the water pool at temperatures between −10 and −60 °C. The lowest freezing points are generally observed at the lowest R values.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::90d4863565edf6455b624fd1d7d234e8 https://doi.org/10.1021/la0302753 Zobrazit plný text záznamu