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Proceedings Paper

Symmetry of functionalized poly(propylene imine) dendrimers probed with hyper-Rayleigh scattering
Author(s): Erik J. H. Put; Koen J. Clays; Andre P. Persoons; Toine H.A.M. Biemans; J. F. G. A. Jansen; R. Kurvers; C. P. M. Luijkx; E. W. Meijer
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Paper Abstract

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.

Paper Details

Date Published: 1 November 1996
PDF: 10 pages
Proc. SPIE 2852, Nonlinear Optical Properties of Organic Materials IX, (1 November 1996); doi: 10.1117/12.256167
Show Author Affiliations
Erik J. H. Put, Univ. of Leuven (Belgium)
Koen J. Clays, Univ. of Leuven (Belgium)
Andre P. Persoons, Univ. of Leuven and Optical Sciences Ctr./Univ. of Arizona (Belgium)
Toine H.A.M. Biemans, Eindhoven Univ. of Technology (Netherlands)
J. F. G. A. Jansen, Eindhoven Univ. of Technology (Netherlands)
R. Kurvers, Eindhoven Univ. of Technology (Netherlands)
C. P. M. Luijkx, Eindhoven Univ. of Technology (Netherlands)
E. W. Meijer, Eindhoven Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 2852:
Nonlinear Optical Properties of Organic Materials IX
Gustaaf R. Moehlmann, Editor(s)

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