title: Prominent electron transport property observed for triply fused metalloporphyrin dimer: directed columnar liquid crystalline assembly by amphiphilic molecular design.
abstract: A triply fused copper porphyrin dimer, when site-specifically modified on its periphery with hydrophobic and hydrophilic wedges (1C12/TEG), self-assembles into a columnar liquid crystalline (LC) mesophase over a wide-temperature range from -17 to 99 degrees C but gives rise to an amorphous solid when modified with only hydrophobic (1C12/C12) or hydrophilic wedges (1TEG/TEG). A LC film of 1C12/TEG displays at 16 degrees C a top-class one-dimensional electron mobility (0.27 cm2/V x s), as evaluated from its maximum flash-photolysis time-resolved microwave conductivity.
authors.affiliation: School of Engineering and Center for NanoBio Integration, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Tsuneaki
authors.initials: T
authors.lastname: Sakurai
authors.forename: Keyu
authors.initials: K
authors.lastname: Shi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sato
authors.forename: Kentaro
authors.initials: K
authors.lastname: Tashiro
authors.forename: Atsuhiro
authors.initials: A
authors.lastname: Osuka
authors.forename: Akinori
authors.initials: A
authors.lastname: Saeki
authors.forename: Shu
authors.initials: S
authors.lastname: Seki
authors.forename: Seiichi
authors.initials: S
authors.lastname: Tagawa
authors.forename: Sono
authors.initials: S
authors.lastname: Sasaki
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Masunaga
authors.forename: Keiichi
authors.initials: K
authors.lastname: Osaka
authors.forename: Masaki
authors.initials: M
authors.lastname: Takata
authors.forename: Takuzo
authors.initials: T
authors.lastname: Aida
mesh_terms: D002152:Calorimetry, Differential Scanning; D003300:Copper / Q000737:chemistry*; D019281:Dimerization; D004553:Electric Conductivity; D004583:Electrons; D050866:Liquid Crystals / Q000737:chemistry* / Q000528:radiation effects; D008665:Metalloporphyrins / Q000737:chemistry*; D008872:Microwaves; D008958:Models, Molecular; D015394:Molecular Structure; D010316:Particle Size; D012666:Semiconductors; D013237:Stereoisomerism; D013696:Temperature; D013997:Time Factors
chemical_list: D008665:Metalloporphyrins; D003300:Copper