title: Designing of an artificial light energy converter in the form of short-chain dyad when combined with core-shell gold/silver nanocomposites.
abstract: UV-vis absorption, steady state and time resolved fluorescence and absorption spectroscopic investigations demonstrate that the short chain dyad MNTMA when combined with gold-silver core-shell (Au@Ag) nanocomposite , forms elongated conformers in the excited state whereas for the dyad - Ag (spherical) system the majority of dyads remains in a folded conformation. In the dyad-core-shell nanocomposite system, energy wasting charge recombination rate slows down primarily due to elongated conformation and thus it may be anticipated that this hybrid nanocomposite system may serve as a better light energy conversion device.
authors.affiliation: Department of Physics, Jadavpur University, Jadavpur, Kolkata 700032, India.
authors.forename: Gopa
authors.initials: G
authors.lastname: Dutta Pal
authors.affiliation: School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India.
authors.forename: Somnath
authors.initials: S
authors.lastname: Paul
authors.affiliation: Saha Institute of Nuclear Physics, Salt Lake, India.
authors.forename: Munmun
authors.initials: M
authors.lastname: Bardhan
authors.affiliation: Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
authors.forename: Asish
authors.initials: A
authors.lastname: De
authors.affiliation: School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India. Electronic address: sptg@iacs.res.in.
authors.forename: Tapan
authors.initials: T
authors.lastname: Ganguly
keywords: Au@Ag core-shell; Charge recombination; Light energy conversion; Nanocomposite; Plasmonic band enhancement; Time resolved spectroscopy