title: Organotetrel Chalcogenide Clusters: Between Strong Second-Harmonic and White-Light Continuum Generation.
abstract: Highly directional white-light generation was recently reported for the organotin sulfide cluster [(StySn)4S6] (Sty = p-styryl). This effect was tentatively attributed to the amorphous nature of the material in combination with the specific combination of an inversion-symmetry-free T/E cluster core (T = tetrel, E = chalcogen) with the attachment of ligands that allow π delocalization of the electron density. Systematic variation of T and the organic ligand (R) that runs from T = Si through Ge to Sn and from R = methyl through phenyl and p-styryl to 1-naphthyl provides a more comprehensive view. According to powder X-ray data, only [(PhSi)4S6] is single-crystalline among the named combinations. Here we demonstrate the fine-tuneability of the nonlinear response, i.e., changing from white-light generation to second-harmonic generation as well as controlling the white-light properties. These are investigated as a function of T, π delocalization of the electron density within R, and the order within the molecular solids.
authors.affiliation: Fachbereich Physik und Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Renthof 5, DE-35032 Marburg, Germany.|Institute of Experimental Physics I, Justus-Liebig-University Giessen , DE-35392 Giessen, Germany.
authors.forename: Nils W
authors.identifier: 0000-0002-7663-0397
authors.initials: NW
authors.lastname: Rosemann
authors.affiliation: Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Hans-Meerwein-Straße 4, DE-35043 Marburg, Germany.
authors.forename: Jens P
authors.initials: JP
authors.lastname: Eußner
authors.affiliation: Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Hans-Meerwein-Straße 4, DE-35043 Marburg, Germany.
authors.forename: Eike
authors.initials: E
authors.lastname: Dornsiepen
authors.affiliation: Fachbereich Physik und Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Renthof 5, DE-35032 Marburg, Germany.|Institute of Experimental Physics I, Justus-Liebig-University Giessen , DE-35392 Giessen, Germany.
authors.forename: Sangam
authors.initials: S
authors.lastname: Chatterjee
authors.affiliation: Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Hans-Meerwein-Straße 4, DE-35043 Marburg, Germany.
authors.forename: Stefanie
authors.identifier: 0000-0002-1325-9228
authors.initials: S
authors.lastname: Dehnen