Novel dendritic chromophores for electro-optics: Influence of binding mode and attachment flexibility on electro-optic behavior

Philip A. Sullivan; Andrew J.P. Akelaitis; Sang Kyu Lee; Genette McGrew; Susan K. Lee; Dong Hoon Choi; Larry R. Dalton

doi:10.1021/cm0517420

Novel dendritic chromophores for electro-optics: Influence of binding mode and attachment flexibility on electro-optic behavior

Philip A. Sullivan, Andrew J.P. Akelaitis, Sang Kyu Lee, Genette McGrew, Susan K. Lee, Dong Hoon Choi, Larry R. Dalton

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

131 Citations (Scopus)

Abstract

Four dendritic electro-optic (EO) chromophores were designed, prepared, and evaluated to explore the effects on EO behavior of end-on relative to side-on chromophore attachment geometry as well as differing chromophore-to-dendrimer core tether groups. Composite samples of APC and dendritic chromophores were found to exhibit considerably more thermally stable EO properties as compared to samples of the corresponding isolated chromophore. Side-on type binding geometry was found most thermally stable, requiring larger thermal activation energies to induce dipole randomization. Incorporation of a long, flexible chromophore-core tether group greatly enhanced average EO coefficients of the dendritic systems.

Original language	English
Pages (from-to)	344-351
Number of pages	8
Journal	Chemistry of Materials
Volume	18
Issue number	2
DOIs	https://doi.org/10.1021/cm0517420
Publication status	Published - 2006 Jan 24

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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abstract = "Four dendritic electro-optic (EO) chromophores were designed, prepared, and evaluated to explore the effects on EO behavior of end-on relative to side-on chromophore attachment geometry as well as differing chromophore-to-dendrimer core tether groups. Composite samples of APC and dendritic chromophores were found to exhibit considerably more thermally stable EO properties as compared to samples of the corresponding isolated chromophore. Side-on type binding geometry was found most thermally stable, requiring larger thermal activation energies to induce dipole randomization. Incorporation of a long, flexible chromophore-core tether group greatly enhanced average EO coefficients of the dendritic systems.",

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AU - Sullivan, Philip A.

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AU - McGrew, Genette

AU - Lee, Susan K.

AU - Choi, Dong Hoon

AU - Dalton, Larry R.

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AB - Four dendritic electro-optic (EO) chromophores were designed, prepared, and evaluated to explore the effects on EO behavior of end-on relative to side-on chromophore attachment geometry as well as differing chromophore-to-dendrimer core tether groups. Composite samples of APC and dendritic chromophores were found to exhibit considerably more thermally stable EO properties as compared to samples of the corresponding isolated chromophore. Side-on type binding geometry was found most thermally stable, requiring larger thermal activation energies to induce dipole randomization. Incorporation of a long, flexible chromophore-core tether group greatly enhanced average EO coefficients of the dendritic systems.

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Novel dendritic chromophores for electro-optics: Influence of binding mode and attachment flexibility on electro-optic behavior

Abstract

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