title: Effect of Zinc oxide nanoparticle on Fluorescence Resonance Energy transfer between Fluorescein and Rhodamine 6G.
abstract: Fluorescence Resonance Energy Transfer between two dyes Fluorescein and Rhodamine 6G were investigated in solution in the presence and absence of Zinc oxide nanoparticle. Zinc oxide nanostructure is used as the fluorescence enhancing agent for the present study since donor (Fluorescein) fluorescence increase significantly in presence of nanoparticle. Accordingly, the energy transfer efficiency in the presence of nanoparticle increases. The maximum efficiency was 69% for acceptor (Rhodamine 6G) concentration of 0.75×10-5M. The energy transfer efficiency was found to be pH sensitive and it varies from 4.15% to 90.00% in mixed dye solution for a change in pH from 1.5 to 10.0. With proper calibration it is possible to use the present system under investigation to sense pH which is better with respect to our previous reported results [Spectrochim. Acta Part A. 149 (2015) 143-149] as it can sense a wide range of pH and with better sensitivity.
authors.affiliation: Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India.
authors.forename: Jaba
authors.initials: J
authors.lastname: Saha
authors.affiliation: Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India.
authors.forename: Arpan Datta
authors.initials: AD
authors.lastname: Roy
authors.affiliation: Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India.
authors.forename: Dibyendu
authors.initials: D
authors.lastname: Dey
authors.affiliation: Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India.
authors.forename: D
authors.initials: D
authors.lastname: Bhattacharjee
authors.affiliation: Department of Physics, Jadavpur University, Jadavpur, Kolkata 700032, West Bengal, India.
authors.forename: Pabitra Kumar
authors.initials: PK
authors.lastname: Paul
authors.affiliation: Nano-Physics and Nanotechnology Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India.
authors.forename: R
authors.initials: R
authors.lastname: Das
authors.affiliation: Thin Film and Nanoscience Laboratory, Department of Physics, Tripura University, Suryamaninagar, 799022, Tripura, India. Electronic address: sa_h153@hotmail.com.
authors.forename: Syed Arshad
authors.initials: SA
authors.lastname: Hussain
keywords: Dyes; FRET; ZnO nanoparticle; pH sensor