Effect of branching on two-photon absorption in triphenylbenzene derivatives. |
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Authors: | Francesca Terenziani Céline Le Droumaguet Claudine Katan Olivier Mongin Mireille Blanchard-Desce |
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Affiliation: | Synthèse et ElectroSynthèse Organiques (CNRS, UMR 6510), Université de Rennes 1, Institut de Chimie, Campus Scientifique de Beaulieu, Bat 10A, 35042 Rennes Cedex, France. |
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Abstract: | 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, are able to promote coherent coupling between the branches, leading to strongly nonadditive properties. |
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Keywords: | charge transfer chromophores electronic coupling solvatochromism two‐photon absorption |
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