Journal
CHEMPHYSCHEM
Volume 8, Issue 5, Pages 723-734Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.200600689
Keywords
charge transfer; chromophores; electronic coupling; solvatochromism; two-photon absorption
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The photophysical and linear and nonlinear spectral properties of octupolar compounds with a triphenylbenzene core are investigated and compared with properties of corresponding dipolar branches. A correlation is found between the solvatochromic behavior and the two-photon absorption cross section. Moreover, the nature of the core is found to be responsible for the nature of the coupling between branches; in the studied case only (weak) electrostatic interactions are effective, while other cores, like the triphenylamine moiety, ore able to promote coherent coupling between the branches, leading to strongly nonadditive properties.
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