Vapor-Phase Living Assembly of π-Conjugated Organic Semiconductors

Tao Hai, Zuofang Feng, Yanqiu Sun, Wai Yeung Wong (Corresponding Author), Yin Liang, Qing Zhang, Yilong Lei (Corresponding Author)

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

In contrast to well-studied amphiphilic block copolymers (BCPs) and π-stacked dyes, living assembly of hydrophobic π-conjugated materials has not yet been explored to date. Using a microspacing physical vapor transport (PVT) technique, the prefabricated microrods of organic semiconductors involving 9,10-dicyanoanthracene (DCA, A) or its binary alloy (B) can act as seeds to initiate living homoepitaxial growth from their ends, giving elongated microrods with controlled length. Red-green-red tricolor fluorescent microrod heterostructures with low dispersity are further realized by living heteroepitaxial growth of B microrod blocks on A seed microrod tips. Upon varying the growth sequence of each block, reverse triblock microrods are also accessible. Such a seed-induced living growth is applicable to triblock microrod heterostructures of more binary combinations as well as even more complex penta- and hepta-block heterostructures comprising A and B. By virtue of a convenient vapor-phase growth method, the present work demonstrates the generality of living assembly of π-conjugated materials.

Original languageEnglish
Pages (from-to)3290-3299
Number of pages10
JournalACS Nano
Volume16
Issue number2
DOIs
Publication statusPublished - 22 Feb 2022

Keywords

  • hydrophobic π-conjugated semiconductors
  • living crystallization-driven self-assembly (CDSA)
  • living epitaxial growth
  • living supramolecular polymerization (LSP)
  • microspacing physical vapor transport (PVT)
  • multiblock microrods

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this