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.
|Number of pages||4|
|Journal||Colloids and Surfaces A: Physicochemical and Engineering Aspects|
|Publication status||Published - 2006 Aug 15|
- Bis-TTF macrocycle
- Charge-transfer complex
- Langmuir-Blodgett films