Nanoscale refractive index tuning of siloxane-based self-assembled electro-optic superlattices

Milko van der Boom, Guennadi Evmenenko, Pulak Dutta, Tobin J Marks

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


The refractive indices of self-assembled organic electro-optic superlattices can be tuned by intercalating high-Z optically transparent group 13 metal oxide sheets into the structures during the self-assembly process. Microstructurally regular acentricity and sizable electro-optic responses are retained in this straightforward synthetic procedure. This "one-pot" all wet-chemistry approach involves: i) layer-by-layer covalent self-assembly of intrinsically acentric multilayers of high-hyperpolarizability chromophores on inorganic oxide substrates, ii) protecting group cleavage to generate a large density of reactive surface hydroxyl sites, iii) self-limiting capping of each chromophore layer with octachlorotrisiloxane, iv) deposition of metal oxide sheets derived from THF solutions of Ga(OiC3H7)3 or In(OiC3H7)3, v) covalent capping of the resulting superlattices.

Original languageEnglish
Pages (from-to)393-397
Number of pages5
JournalAdvanced Functional Materials
Issue number5
Publication statusPublished - Oct 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

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