Binary Colloidal Crystal Films Grown by Vertical Evaporation of Silica Nanoparticle Suspensions

Jennifer L. Russell, Grace H. Noel, Joseph M. Warren, Ngoc Lan L. Tran, Thomas E. Mallouk

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Despite intensive research efforts in the synthesis of binary colloidal crystals, the production of well ordered binary colloidal crystal films over large areas continues to be synthetically challenging. In this paper, we investigate the phase behavior of binary mixtures of l-arginine-stabilized 36 and 22 nm silica nanoparticles deposited as centimeter-scale thin films onto a vertical substrate via evaporative assembly. By adjusting the temperature and relative colloid composition under high humidity conditions, we controlled the order of the resultant colloidal crystal films. The domain size of the AB2 binary crystalline phase increased with an excess of small (B) particles and a very slow evaporation rate below 45 °C, with the best results obtained at 30° and 35 °C.

Original languageEnglish (US)
Pages (from-to)10366-10373
Number of pages8
JournalLangmuir
Volume33
Issue number39
DOIs
StatePublished - Oct 3 2017

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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    Russell, J. L., Noel, G. H., Warren, J. M., Tran, N. L. L., & Mallouk, T. E. (2017). Binary Colloidal Crystal Films Grown by Vertical Evaporation of Silica Nanoparticle Suspensions. Langmuir, 33(39), 10366-10373. https://doi.org/10.1021/acs.langmuir.7b02553