Solvent-vapor annealing-induced growth, alignment, and patterning of π-conjugated supramolecular nanowires

Hin Lap Yip, Hong Ma, Yanqing Tian, Orb Acton, Neil M. Tucker, Alex K.Y. Jen

Research output: Contribution to journalReview article

5 Scopus citations

Abstract

The self-assembling properties of two rationally designed discotic π-conjugated hexaazatrinaphthylene (HATNA) molecules have been studied. In appropriate solvent systems, both ester-dodecylsubstituted and amide-dodecyl-substituted HATNAs self-assembled into nanowires and formed organogels. These nanowires could be easily transferred onto solid supports through spin casting for morphological study. In addition to the solution-based self-assembly method, solvent-vapor annealing (SVA) was explored as an alternative way to control the organization of supramolecular nanowires on surfaces. It was found that amorphous thin film of HATNA molecules transformed gradually into nanowire structures through a nucleation and growth mechanism during the SVA process. Several parameters including the preordering of molecules in the original thin film, choice of solvent vapors, annealing times, and surface properties were tuned to create different supramolecular organizations. Under particular conditions, aligned nanowires with preferential direction can be achieved.

Original languageEnglish (US)
Pages (from-to)311-321
Number of pages11
JournalJournal of Materials Research
Volume26
Issue number2
DOIs
StatePublished - Jan 28 2011

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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