Symmetry of functionalized poly(propylene imine) dendrimers probed with hyper-Rayleigh scattering
| Autor: | Koen Clays, Toine H.A.M. Biemans, Erik J. H. Put, André Persoons, J. F. G. A. Jansen, R. Kurvers, C. P. M. Luijkx, E. W. Meijer |
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| Přispěvatelé: | Macromolecular and Organic Chemistry, Macro-Organic Chemistry |
| Jazyk: | angličtina |
| Rok vydání: | 1996 |
| Předmět: | |
| Zdroj: | Nonlinear optical properties of organic materials IX : 7-9 August 1996, Denver, Colorado, 122-131 STARTPAGE=122;ENDPAGE=131;TITLE=Nonlinear optical properties of organic materials IX : 7-9 August 1996, Denver, Colorado |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.256167 |
| Popis: | Hyper-Rayleigh scattering has become the technique of choice for the determination of the first hyperpolarizabilities of non-linear optical (NLO) molecules. Moreover, by exploiting the sensitivity of this second-order NLO-technique to molecular and supra-molecular symmetry, this technique was upgraded to a powerful spectroscopic tool. We did this by probing the symmetry of NLO-functionalized dendrimers, measuring the first hyperpolarizability at different generations. These results are compared with measurements on side-chain NLO-functionalized linear co-polymers with different degrees of NLO-functionalized along the polymer backbone. The measurement show, in a unique way at the molecular level, that the dendrimers in solution form globular structures at generations with 32 and 64 end-groups with restricted mobility of the end-groups. |
| Databáze: | OpenAIRE |
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