Abstract
Steady state photophysics of norharmane (NHM) has been studied in different aqueous micellar environments. In aqueous solution at pH 7, excitation of the neutral species promotes a rapid transfer of proton giving rise to the corresponding cationic emission. Aqueous micelles differing in their surface charge characteristics interact with the fluorophore differently. The dependence of the fluorescence of the probe molecule on different micelles has been exploited to determine the critical micellar concentrations (CMCs) of the surfactants. The binding constant ( K) and free energy change (Δ G) for the interaction of norharmane with the micelles have been evaluated from the fluorescence data. The probable location of the probe in the micelles has also been suggested. Polarity of the microenvironment around the probe has been determined for CTAB and TX-100 micellar systems from a comparison of the variation of fluorescence properties of the two prototropic species in water–dioxane mixture with varying composition.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
