@article {4501,
	title = {Accurate density-functional calculation of core-electron binding energies by a total-energy difference approach},
	journal = {Journal of Chemical Physics},
	volume = {111},
	number = {21},
	year = {1999},
	note = {ISI Document Delivery No.: 255TCTimes Cited: 34Cited Reference Count: 52},
	month = {Dec},
	pages = {9485-9492},
	type = {Article},
	abstract = {A procedure for calculating core-electron binding energies (CEBEs), based on a total-energy difference approach within Kohn-Sham density functional theory, was investigated. Ten functional combinations and several basis sets (including unscaled, scaled, and core-valence correlated functions) were studied using a database of reliable observed CEBEs. The functionals designed by Perdew and Wang (1986 exchange and 1991 correlation) were found to give the best performance with an average absolute deviation from experiment of 0.15 eV. The scaled basis sets did not perform satisfactorily, but it was found that the core-valence correlated cc-pCVTZ basis functions were an excellent alternative to the cc-pV5Z set as they provided equally accurate results and could be applied to larger molecules. (C) 1999 American Institute of Physics. [S0021-9606(99)30742-X].},
	keywords = {APPROXIMATION, CALCULATIONS, CORRELATED MOLECULAR, EXCHANGE-ENERGY, GAS, GAUSSIAN-BASIS SETS, METHANE, MODEL MOLECULES, POLYACRYLONITRILE, RAY PHOTOELECTRON-SPECTRA, ZETA BASIS-SET},
	isbn = {0021-9606},
	url = {<Go to ISI>://000083685400006},
	author = {Cavigliasso, G. and Chong, D. P.}
}
@article {3917,
	title = {Accurate density functional calculation of core electron binding energies .5. Application to nitriles. Model molecules for polyacrylonitrile revisited},
	journal = {Journal of Electron Spectroscopy and Related Phenomena},
	volume = {83},
	number = {2-3},
	year = {1997},
	note = {ISI Document Delivery No.: XC597Times Cited: 24Cited Reference Count: 30},
	month = {Feb},
	pages = {227-234},
	type = {Article},
	abstract = {A recent procedure for computing accurate core electron binding energies (CEBEs) via density functional theory (DFT) is applied to acetonitrile, propionitrile, 2-cyanopropane, acrylonitrile, methacrylonitrile and the 2-methylglutaronitrile conformer of lowest energy, The first three systems have been studied in the past as model compounds to interpret the XPS spectrum of polyacrylonitrile (PAN) using post-Hartree-Fock finite-difference calculations, in order to solve a controversy in the assignment of chemically shifted atoms in the C 1s region, This assignment is revisited with the unrestricted generalized transition-state model and a combined functional of Becke{\textquoteright}s 1988 exchange with Perdew{\textquoteright}s 1986 correlation. Using Dunning{\textquoteright}s correlation-consistent polarized valence triple zeta basis sets with scaling improvements, we obtain predicted CEBEs for gasphase acetonitrile, propionitrile and acrylonitrile in remarkable agreement with experiment (average absolute deviation 0.09 eV). The CEBEs of these systems confirm the overall trends of the previous attributions of their respective gas-phase XPS spectrum, except in the case of propionitrile. These results, as well as those on 2-cyanopropane, methacrylonitrile and 2-methylglutaronitrile, bring some additional information on the extrapolation of the results to the assignment of the C 1s contributions of polyacrylonitrile. (C) 1997 Elsevier Science B.V.},
	keywords = {APPROXIMATION, BASIS-SETS, computation, CORE LEVELS, density, functional theory, GAS-PHASE, NITRILES, POLYACRYLONITRILE, SPECTROSCOPY, X-ray photoelectron spectroscopy, XPS},
	isbn = {0368-2048},
	url = {<Go to ISI>://A1997XC59700014},
	author = {Bureau, C. and Chong, D. P. and Lecayon, G. and Delhalle, J.}
}
@article {3916,
	title = {Recent advances in the practical and accurate calculation of core and valence XPS spectra of polymers: from interpretation to simulation?},
	journal = {Nuclear Instruments \& Methods in Physics Research Section B-Beam Interactions with Materials and Atoms},
	volume = {131},
	number = {1-4},
	year = {1997},
	note = {ISI Document Delivery No.: YC279Times Cited: 5Cited Reference Count: 712nd International Symposium on Ionizing Radiation and Polymers (IRaP 96)NOV 03-08, 1996GUADELOUPE, FRANCECEA Saclay, DSM DRECAM, Univ Antilles Guyane, Int Atom Energy Agcy, Inst Oberflachenmodifizierung},
	month = {Aug},
	pages = {1-12},
	type = {Proceedings Paper},
	abstract = {Core and valence X-ray Photoelectron Spectroscopies (XPS) are routinely used to obtain information on the chemical composition, bonding and homogeneity of polymer surfaces. In spite of their apparent conceptual simplicity, Core and Valence Electron Binding Energies (CEBEs and VEBEs) a few electron-volts (eV) or fractions of an eV apart are difficult to interpret. We present some results obtained with various recent theoretical. approaches. An emphasis is made on a procedure based on the Density Functional Theory (DFT) that enables the calculation of CEBEs and VEBEs which are in remarkable agreement with experiment. The method has been tested on numerous small (3-6 atoms) to fairly large (15-25 atoms) molecules, and shows an average absolute deviation with experiment of only 0.20 eV for CEBEs and 0.30 eV for VEBEs, i.e. compatible with the resolution of the best XPS experiments carried out at the moment. Besides the quality of its predictions, the procedure takes advantage of the speed and CPU time scaling of DFT as a function of system size: it is computationally tractable, even for surprisingly large systems such as polymers, and may be an interesting accurate alternative to interpret and simulate XPS-probing on real systems, We illustrate the usefullness and pitfalls of this approach in fundamental as well as applied fields such as in the study of Polyacrylonitrile (PAN), Polytetrafluoroethylene (PTFE), Polyvinyldifluoride (PVdF) and gamma-Aminopropyltriethoxysilane (gamma-APS, an adhesion promoter). (C) 1997 Elsevier Science B.V.},
	keywords = {DENSITY-FUNCTIONAL CALCULATION, ELECTRON BINDING-ENERGIES, ESCA, GREEN-FUNCTION, IONIZATION-POTENTIALS, MO METHOD, MODEL MOLECULES, POLYACRYLONITRILE, POLYETHYLENE LAMELLAE, RAY PHOTOELECTRON-SPECTROSCOPY},
	isbn = {0168-583X},
	url = {<Go to ISI>://A1997YC27900005},
	author = {Bureau, C. and Chong, D. P. and Endo, K. and Delhalle, J. and Lecayon, G. and LeMoel, A.}
}
