Title of article :
Molecular-assembly nanostructures of 1:1 mixed Langmuir–Blodgett films of amphiphilic bis-TTF macrocycle and F4-TCNQ
Author/Authors :
Tatewaki، نويسنده , , Yoko and Akutagawa، نويسنده , , Tomoyuki and Nakamura، نويسنده , , Takayoshi and Hasegawa، نويسنده , , Hiroyuki and Mashiko، نويسنده , , Shinro and Christensen، نويسنده , , Christian A. and Becher، نويسنده , , Jan، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
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.
Keywords :
Nanowire , Charge-transfer complex , Langmuir–Blodgett films , Bis-TTF macrocycle
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects