title: SEIRA studies of uracil adsorbed on wet-chemically prepared gold nanoparticles film on glass substrate - effect of morphology of film.
abstract: Surface-enhanced infrared absorption (SEIRA) studies of uracil adsorbed on wet-chemically prepared gold nanoparticles (AuNp) immobilized on silanised glass substrate were carried out using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy. The deposition time dependent evolution of morphological changes in AuNp films and its influence on the SEIRA spectra of uracil were investigated. The morphological changes were examined by atomic force microscopy (AFM). The spectrum of uracil adsorbed on AuNp film obtained with 1/2 an hour deposition time showed a clear enhancement than 2 and 4h deposition times. The small shift seen in SEIRA spectra indicates weak interaction of the molecules with AuNp film.
authors.affiliation: High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
authors.forename: Naveen
authors.initials: N
authors.lastname: Kumar
authors.affiliation: High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India. Electronic address: susy@barc.gov.in.
authors.forename: S
authors.initials: S
authors.lastname: Thomas
authors.affiliation: Atomic & Molecular Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
authors.forename: R B
authors.initials: RB
authors.lastname: Tokas
authors.affiliation: High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
authors.forename: R J
authors.initials: RJ
authors.lastname: Kshirsagar
mesh_terms: D000327:Adsorption; D004867:Equipment Design; D005898:Glass / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared / Q000295:instrumentation*; D013499:Surface Properties; D014498:Uracil / Q000737:chemistry*
chemical_list: D014498:Uracil; D006046:Gold
keywords: ATR–FTIR; AuNp; SEIRA; Uracil