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 articlepeer-review

    8 Scopus citations


    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
    Issue number2
    StatePublished - Jan 28 2011

    ASJC Scopus subject areas

    • General Materials Science
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering


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