Diamond-like carbon nanocomposite films with embedded silver nanoparticles are considered experimentally (spectroellipsometric characterization) and theoretically (modeling of optical properties). Metallic nanocomposite films were synthesized by reactive magnetron sputtering and were studied by transmission electron microscope (TEM) and atomic force microscope (AFM). The optical constants of th...

Abstract—The Förster Resonance Energy Transfer (FRET) studies between acridinedione dyes as donors and rhodamine dyes as acceptors are explored by spectroscopic techniques like absorption, fluorescence and lifetime measurements. Enhancement of the acceptor photoluminescence intensity and a decrease of the donor decay time are observed in solutions containing acridinedione dye with Rhodamine B (...

We report high resolution photoelectron spectra of Au2(-) using a newly built photoelectron imaging apparatus. Vibrationally resolved photoelectron images are obtained for the ground state detachment transition of Au2(-) at various photon energies (442.80-670.18 nm) at a resolution of 3 cm(-1) for low energy electrons. Franck-Condon simulations yield the vibrational temperature of Au2(-) and th...

Alkylation of beta-amino ester enolates proceeds with high diastereoselectivity. Single crystal, powder, and solution X-ray diffraction studies of the enolate show that the racemic enolate forms prismatic hexamers. 6Li NMR spectroscopic studies on partially racemic enolates reveal complex mixtures of homo- and heterochiral hexamers. An implicit fit of the aggregate populations to the Boltzmann ...

Extensive ab initio calibration calculations combined with extrapolations towards the infinite-basis limit lead to a ground-state dissociation energy of Be 2 , D e =944±25 cm −1 , substantially higher than the accepted experimental value, and confirming recent theoretical findings. Our best computed spectro-scopic observables (expt. values in parameters) are G(1)−G(0)=223. (0.609) cm −1 ; revis...

The least computational expensive Hamiltonian (methods) and wavefunction (basis sets) for diatomic nickel-aluminum (NiAl), was calculated, along with the ground state, bond length, frequency, and binding energy. Researchers believe nickel-aluminum can be used in high performance turbine jet engines, in place of aluminum-coated nickel. The effects of basis functions under increasing levels of th...

A novel thiosemicarbazone from 2-acetonaphthone (represented as acnTSC) has been synthesized and its basic coordination chemistry with zinc(II), cobalt(II), and copper(II) explored. The complexes were characterized by elemental analysis and various spectroscopic techniques and are best formulated as [M(acnTSC)(2)Cl(2)] with the metal likely in an octahedral environment. The anticancer activity ...

Abstract: This paper reports the results of an FT-IR and NIR study of N-methylformamide in carbon tetrachloride solution in presence of ethers as the O-electron donors, i.e., diethyl ether (DEE), diisopropyl ether (DiPE), methyl t-butyl ether (MtBE), dibutyl ether (DBE), dipentyl ether (DPE), tetrahydrofuran (THF) and tetrahydropyran (THP). The spectroscopic characteristics of the N–H···O hydro...

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We have measured the optical constants of Ga1−xMnxAs from 0.62 to 6 eV, using spectroscopic ellipsometry. The second derivatives of the dielectric function are examined through a critical point analysis, allowing us to inspect interband transitions from different points in kW space. The evolution of the band structure over a broad doping range is determined. Specifically, the E1 critical point ...