Molecular-assembly nanostructures of 1:1 mixed Langmuir-Blodgett films of amphiphilic bis-TTF macrocycle and F4-TCNQ

Yoko Tatewaki, Tomoyuki Akutagawa, Takayoshi Nakamura, Hiroyuki Hasegawa, Shinro Mashiko, Christian A. Christensen, Jan Becher

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Langmuir-Blodgett (LB) films of 1:1 mixture between an electron donor of amphiphilic bis-tetrathiafulvalene (TTF) macrocycle (1) and an electron acceptor of 2,3,5,6-tetrafluoro-7,7′,8,8′-tetracyano-p-quinodimethane (F4-TCNQ) were fabricated on substrate surface. Formation of molecular-assembly nanowires was observed on mica surface, whose typical dimension was 3 nm (height) × 50 nm (width) × 1000 nm (length). The one-dimensional nanowires were composed of completely charge-transferred (12+)(F4-TCNQ-)2, which coexisted with two-dimensional domains of nanowire bundles of neutral 10. Room temperature electrical conductivity of 20-layer LB film for 1:1 mixed monolayer of 1 and F4-TCNQ was 8.3 × 10-4 S cm-1. The film showed a semiconducting temperature dependence with an activation energy of 0.30 eV, which was ∼0.1 eV larger than that of (12+)(F4-TCNQ-)2 LB film.

Original languageEnglish
Pages (from-to)631-634
Number of pages4
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume284-285
DOIs
Publication statusPublished - 2006 Aug 15
Externally publishedYes

Keywords

  • Bis-TTF macrocycle
  • Charge-transfer complex
  • Langmuir-Blodgett films
  • Nanowire

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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