Open AccessInvestigation of the conformation of hyperbranched poly(arylene oxindole)s using hyper‐Rayleigh scattering
Author(s) -
Vandendriessche Annelies,
Asselberghs Inge,
Clays Koen,
Smet Mario,
Dehaen Wim,
Verbiest Thierry,
Koeckelberghs Guy
Publication year - 2009
Publication title -
journal of polymer science part a: polymer chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.768
H-Index - 152
eISSN - 1099-0518
pISSN - 0887-624X
DOI - 10.1002/pola.23420
Subject(s) - arylene , dendrimer , chromophore , polymer chemistry , methacrylate , polymer , materials science , macromolecule , chemistry , polymer science , photochemistry , composite material , organic chemistry , polymerization , biochemistry , alkyl , aryl
A hyperbranched poly(arylene oxindole), a poly(methacrylate), and a dendrimer, to which the same nonlinear optical chromophore was attached via a small, rigid spacer, were prepared. The difference in hyper‐Rayleigh scattering intensities was measured and compared. From this study, it was concluded that the chromophores, and hence the functional groups in the macromolecule before functionalization, are orientationally correlated in the dendrimer, whereas they are not in the linear and hyperbranched polymer. More in particular, the chromophores in the dendrimer are fixed in a centrosymmetric way because of the globular structure, whereas there is no orientational correlation between the chromophores in linear and hyperbranched polymer. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 3740–3747, 2009
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