title: Time resolved FRET measurement in various heterogeneous media using merocyanine dye as a donor.
abstract: Ultrafast fluorescence resonance energy transfer (FRET) from a merocyanine dye to a Rhodamine 6G (R6G) molecule in micelles formed by the surfactants SDS and DTAB and also in a catanionic vesicle formed by SDS and DTAB has been studied by picosecond time resolved emission spectroscopy. Here the dye acts as a donor molecule and R6G acts as the acceptor molecule. Multiple timescales of FRET have been detected, namely, an ultrafast component of 100-500 ps and relatively long component (1800-3300 ps). The different time scales are attributed to different donor-acceptor distances.
authors: Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur Campus, BCKV Main P.O., Nadia, 741252, India.
authors: Niraja
authors: N
authors: Kedia
authors: Presidency University, 86/1, College Street, Kolkata 700 073, India. Electronic address: bsanjibb@yahoo.com.
authors: Sanjib
authors: S
authors: Bagchi
mesh_terms: D000067493:Dynamic Light Scattering; D031541:Fluorescence Resonance Energy Transfer / Q000379:methods*; D018625:Microscopy, Atomic Force; D011744:Pyrimidinones / Q000737:chemistry*; D012235:Rhodamines / Q000737:chemistry; D013997:Time Factors
chemical_list: D011744:Pyrimidinones; D012235:Rhodamines; C026188:rhodamine 6G; C003954:merocyanine dye
keywords: FRET; Merocyanine dye; Multiple time scale; R6G