title: Femtosecond study of ultrafast fluorescence resonance energy transfer in a catanionic vesicle.
abstract: Ultrafast fluorescence resonance energy transfer (FRET) in a catanionic [sodium dodecyl sulfate (SDS)-dodecyltrimethyl ammonium bromide (DTAB)] vesicle is studied by femtosecond up-conversion. The vesicles (diameter ∼400 nm for SDS-rich and ∼250 nm for DTAB-rich vesicles) are much larger than the SDS and DTAB micelles (diameter ∼4 nm). In both micelle and vesicles, FRET occurs in multiple time scales and the time scales of FRET correspond to a donor-acceptor distance varying between 12 and 36 Å.
authors.affiliation: Physical Chemistry Department, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India.
authors.forename: Atanu Kumar
authors.initials: AK
authors.lastname: Das
authors.forename: Tridib
authors.initials: T
authors.lastname: Mondal
authors.forename: Dibyendu Kumar
authors.initials: DK
authors.lastname: Sasmal
authors.forename: Kankan
authors.initials: K
authors.lastname: Bhattacharyya