title: Förster resonance energy transfer among a structural isomer of adenine and various Coumarins inside a nanosized reverse micelle.
abstract: In this article we have studied Förster Resonance Energy Transfer (FRET) using 2-aminopurine (2-AP), a structural isomer of adenine as donor and various Coumarins as acceptors inside AROSOL-OT (AOT)-water reverse micelles (RM) using steady-state and time-resolved fluorescence spectroscopies. We have used three sets of FRET and all the pairs except 2-AP-Coumarin-480 exhibited quite efficient FRET. For the efficient pairs, overlap integral J(λ) and Förster distance (R0) are of high values but the rate constant of energy transfer (kET) are quite low. The rate is gradually amplified with increase in water content for the 2-AP-Coumarin-440 pair while the reverse is observed for 2-AP-Coumarin-460. In future our FRET pair can be used in more modified and sophisticated confined media such as biomembranes of varying size, physical properties and chemical compositions etc.
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India.
authors.forename: Chiranjib
authors.initials: C
authors.lastname: Ghatak
authors.forename: Vishal Govind
authors.initials: VG
authors.lastname: Rao
authors.forename: Sarthak
authors.initials: S
authors.lastname: Mandal
authors.forename: Rajib
authors.initials: R
authors.lastname: Pramanik
authors.forename: Souravi
authors.initials: S
authors.lastname: Sarkar
authors.forename: Pramod K
authors.initials: PK
authors.lastname: Verma
authors.forename: Nilmoni
authors.initials: N
authors.lastname: Sarkar
mesh_terms: D015075:2-Aminopurine / Q000737:chemistry*; D000225:Adenine / Q000737:chemistry*; D003374:Coumarins / Q000737:chemistry*; D031541:Fluorescence Resonance Energy Transfer; D007536:Isomerism; D008823:Micelles; D049329:Nanostructures / Q000737:chemistry
chemical_list: D003374:Coumarins; D008823:Micelles; D015075:2-Aminopurine; D000225:Adenine