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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dalton, Larry R.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2011Systematic nanoengineering of soft matter organic electro-optic materialscitations
- 2010Definition of critical structure/function relationships and integration issues for organic electro-optic materials
- 2010Organic electro-optic materials
- 2008Guest-host cooperativity in organic materials greatly enhances the nonlinear optical responsecitations
- 2007Theory-Guided Design and Synthesis of Multichromophore Dendrimerscitations
- 2006Theoretically-inspired rational design of electro-optic materials
- 2005Systematic Study of the Structure-Property Relationship of a Series of Ferrocenyl Nonlinear Optical Chromophorescitations
- 2004Investigation of polymers and marine-derived DNA in optoelectronicscitations
- 2001Advancements in conductive cladding materials for nonlinear optic polymer based optoelectronic devicescitations
- 2000Realization of polymeric electro-optic modulators with less than one volt drive voltage requirementcitations
Places of action
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article
Theory-Guided Design and Synthesis of Multichromophore Dendrimers
Abstract
Extensive experimental and theoretical study suggests that interchromophore electrostatic interactions are among the most severe impediments to the induction and stability of large electro-optic coefficients in electric-field-poled organic materials. In this report, multichromophore- containing dendritic materials have been investigated as a means to minimize unwanted attenuation of nonlinear optical (electrooptic) activity at high chromophore loading. The dendritic molecular architectures employed were designed to provide optimized molecular scaffolding for electric-field-induced molecular reorientation. Design parameters were based upon past experimental results in conjunction with statistical and quantum mechanical modeling. The electro-optic behavior of these materials was evaluated through experimental and theoretical analysis. Experimental data collected from the dendrimer structures depict a reasonably linear relationship between chromophore number density (<i>N</i>) and electro-optic activity (<i>r</i><sub>33</sub>) demonstrating a deviation from the dipolar frustration that typically limits <i>r</i><sub>33</sub> in conventional chromophore/polymer composite materials. The observed linear dependence holds at higher chromophore densities than those that have been found to be practical in systems of organic NLO chromophores dispersed in polymer hosts. Theoretical analysis of these results using Monte Carlo modeling reproduces the experimentally observed trends confirming linear dependence of electro-optic activity on <i>N </i>in the dendrimer materials. These results provide new insight into the ordering behavior of EO dendrimers and demonstrate that the frequently observed asymptotic dependence of electro-optic activity on chromophore number density may be overcome through rational design.