TY - JOUR
T1 - Molecular-assembly nanostructures of 1:1 mixed Langmuir-Blodgett films of amphiphilic bis-TTF macrocycle and F4-TCNQ
AU - Tatewaki, Yoko
AU - Akutagawa, Tomoyuki
AU - Nakamura, Takayoshi
AU - Hasegawa, Hiroyuki
AU - Mashiko, Shinro
AU - Christensen, Christian A.
AU - Becher, Jan
N1 - Funding Information:
The LB film of 1:1 mixed monolayer of 1 and F 4 -TCNQ was composed of oriented molecular-assembly nanowires and 2D domains of nanowire bundles. There are two possibilities on the electronic state of nanostructures; the formation of ( 1 + )(F 4 -TCNQ − ) having partially charge-transferred state or charge separated state, and the phase separation between ( 1 2+ )(F 4 -TCNQ − ) 2 and neutral 1 . Phase separation of 1:1 mixed LB film was supported by the AFM images and spectroscopic measurement.
PY - 2006/8/15
Y1 - 2006/8/15
N2 - 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.
AB - 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.
KW - Bis-TTF macrocycle
KW - Charge-transfer complex
KW - Langmuir-Blodgett films
KW - Nanowire
UR - http://www.scopus.com/inward/record.url?scp=33744925436&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33744925436&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2005.10.094
DO - 10.1016/j.colsurfa.2005.10.094
M3 - Article
AN - SCOPUS:33744925436
SN - 0927-7757
VL - 284-285
SP - 631
EP - 634
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -