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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/9417
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dc.contributor.authorSoras, G.en
dc.contributor.authorPsaroudakis, N.en
dc.contributor.authorMousdis, G. A.en
dc.contributor.authorManos, M. J.en
dc.contributor.authorTasiopoulos, A. J.en
dc.contributor.authorAloukos, P.en
dc.contributor.authorCouris, S.en
dc.contributor.authorLabeguerie, P.en
dc.contributor.authorLipinski, J.en
dc.contributor.authorAvramopoulos, A.en
dc.contributor.authorPapadopoulos, M. G.en
dc.date.accessioned2015-11-24T16:49:02Z-
dc.date.available2015-11-24T16:49:02Z-
dc.identifier.issn0301-0104-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/9417-
dc.rightsDefault Licence-
dc.subjectnon-linear optical propertiesen
dc.subjectnickel derivativesen
dc.subjectz-scan techniqueen
dc.subjectthird-order susceptibility chi((3))en
dc.subjecthyperpolarizabilitiesen
dc.subjectgrindolen
dc.subjectdften
dc.subjectmulti-sulfur 1,2-dithioleneen
dc.subjectnear-ir absorptionen
dc.subjectsemiquinonato type ligandsen
dc.subjectmolecular-orbital methodsen
dc.subjectz-scan techniqueen
dc.subjectmetal-complexesen
dc.subjectbasis-setsen
dc.subjectintermolecular interactionsen
dc.subjectstate propertiesen
dc.subjectdithioleneen
dc.titleSynthesis and non-linear optical properties of some novel nickel derivativesen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.chemphys.2010.04.019-
heal.identifier.secondary<Go to ISI>://000278544600006-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0301010410001850/1-s2.0-S0301010410001850-main.pdf?_tid=dcbfb3f0-3635-11e3-94f2-00000aacb35d&acdnat=1381909251_29dea9947a60be7e0fcaf4cc5aebf550-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.publicationDate2010-
heal.abstractThe synthesis of a new nickel complex with an extended multi-sulfur dithiolene ligand Ni(etodddt)(2) (etodddt = 4,5-(1,4-oxathiane-2,3-diyldithio)-1,3-dithiole) is described. It is characterized analytically and spectroscopically. The structure of the compound is determined by single crystal X-ray crystallography. Its redox potentials are determined using cyclic voltammetry and are compared with similar dithiolene complexes. Several other nickel derivatives are synthesized: bis(5,6-dihydro-1,4-dithiine-2,3-dithiole) nickel (Ni(dddt)(2)) and bis(6,7-dihydro-5H-[1,4] dithiepine-2,3-ddithiole) nickel (Ni(pddt)(2)). The non-linear optical response of the synthesized dithiolenes is measured in the visible (532 nm) and in the infrared (1064 nm) using the Z-scan technique with picosecond laser pulses. Both the refractive and absorptive parts of the third-order susceptibility chi((3)) are determined and the second-order hyperpolarizabilities c of the dithiolenes are determined and compared between them and with other reported in the literature data. The second hyperpolarizabilities of the synthesized metal derivatives are calculated by employing a series of computational approaches, involving density functional theory and a semi-empirical method. The. first strong transition of the derivatives is attributed mainly to HOMO-LUMO pair connected with the intramolecular charge transfer pi --> pi*. Similar trends are observed between the experimental and the theoretical second hyperpolarizabilities, although the former are much larger due to resonance enhancement. The reported analysis demonstrates the complementarity of both experimental and theoretical results. It is shown that modest substitution of Ni(SCH)(4), for example substitution of four H atoms by two S(2)C(2)H(4) groups, leads to a very large increase of the second hyperpolarizability. (C) 2010 Elsevier B. V. All rights reserved.en
heal.publisherElsevieren
heal.journalNameChemical Physicsen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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