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Organotetrel Chalcogenide Clusters: Between Strong Second-Harmonic and White-Light Continuum Generation
Nils W Rosemann1,2, Jens P Eußner3, Eike Dornsiepen3
1Fachbereich Physik und Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Renthof 5, DE-35032 Marburg, Germany.
Journal of the American Chemical Society
|December 22, 2016
Summary
Researchers explored organotin sulfide clusters for tunable white-light generation. They found that varying the core elements and organic ligands allows control over nonlinear optical properties, shifting from white-light to second-harmonic generation.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Nonlinear Optics
Background:
- Organotin sulfide clusters exhibit unique optical properties.
- Previous work suggested amorphous nature and specific cluster/ligand combinations drive white-light generation.
Purpose of the Study:
- Systematically investigate the influence of tetrel (T) and organic ligand (R) variations on nonlinear optical responses.
- Demonstrate fine-tuning of white-light generation and explore second-harmonic generation.
Main Methods:
- Synthesis and characterization of various organotin sulfide clusters with systematic variations in T (Si, Ge, Sn) and R (methyl, phenyl, p-styryl, 1-naphthyl).
- Powder X-ray diffraction to determine crystalline structure.
- Investigation of nonlinear optical properties, including white-light generation and second-harmonic generation.
Main Results:
- [(PhSi)4S6] was the only single-crystalline compound among those studied.
- The nonlinear optical response is tunable, allowing a shift from white-light generation to second-harmonic generation.
- Control over white-light properties was achieved by modifying T, π-delocalization in R, and molecular order.
Conclusions:
- The nonlinear optical properties of organotin sulfide clusters are highly tunable.
- Systematic variation of the cluster core and organic ligands offers a pathway to control light generation phenomena.
- These findings open possibilities for designing novel materials for nonlinear optics.
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