Patterned when wet: Environment-dependent multifunctional patterns within amphiphilic colloidal crystals

Adrian M. Brozell, Michelle A. Muha, Arian Abed-Amoli, Daniel Bricarello, Atul N. Parikh

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


A simple integration of molecular and colloidal self-assembly approaches with photopatterning is shown to produce multifunctional patterns of amphiphilic colloidal crystals. These crystals display binary spatial patterns of wettability by water and a single photonic stop-band in air. Upon exposure to water, the uniform stop-band is replaced by a pattern of coexisting stop-bands that reflect the underlying pattern of surface wetting. These hydration-dependent photonic patterns within single colloidal crystals form because of near-complete water rejection from the three-dimensionally disposed nanoscale interstices in hydrophobic regions and its exclusive permeation within the hydrophilic regions. This water permeation pattern is further structured by the three-dimensional (3D) distribution and contiguity of the nanoscale interstices between individual colloids, allowing 3D patterned organization of functional units in secondary self-assembly processes, as illustrated using quantum dots, metal nanoparticles, and fluorescent probes.

Original languageEnglish (US)
Pages (from-to)3822-3826
Number of pages5
JournalNano Letters
Issue number12
StatePublished - Dec 2007

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)


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