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

Research output: Contribution to journalArticle

120 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 languageEnglish
Pages (from-to)344-351
Number of pages8
JournalChemistry of Materials
Volume18
Issue number2
DOIs
Publication statusPublished - 2006 Jan 24

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ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

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