TY - JOUR
T1 - Scanning tunneling microscope observation of a polar liquid crystal and its computer simulation
AU - Matsushige, Kazumi
AU - Taki, Seiji
AU - Okabe, Hirotaka
AU - Takebayashi, Yasuo
AU - Hayashi, Kouichi
AU - Yoshida, Yuji
AU - Horiuchi, Toshihisa
AU - Hara, Kazuhiro
AU - Takehara, Kenji
AU - Isomura, Kazuaki
AU - Taniguchi, Hiroshi
PY - 1993/4
Y1 - 1993/4
N2 - The scanning tunneling microscope (STM) constructed in the laboratory was utilized to observe the molecular arrangement of a new type of liquid crystalline molecule, 5-(p-dodecyloxyphenyl)pyrazine-2-carbonitrile (DOPPC), which has large dipole moments along the molecular axis. The DOPPC molecules adsorbed on a graphite substrate showed several different STM images with regular two-dimensional molecular arrays. They revealed a novel inter-digitated double-row structure, differing from the single-row and the double-row structures proposed for the STM images of cyanobiphenyl liquid crystals. Moreover, a computer calculation was conducted based on electrostatic multipole-multipole interaction and simulated the most energetically preferable molecular arrangement, which agreed well with the observed STM image.
AB - The scanning tunneling microscope (STM) constructed in the laboratory was utilized to observe the molecular arrangement of a new type of liquid crystalline molecule, 5-(p-dodecyloxyphenyl)pyrazine-2-carbonitrile (DOPPC), which has large dipole moments along the molecular axis. The DOPPC molecules adsorbed on a graphite substrate showed several different STM images with regular two-dimensional molecular arrays. They revealed a novel inter-digitated double-row structure, differing from the single-row and the double-row structures proposed for the STM images of cyanobiphenyl liquid crystals. Moreover, a computer calculation was conducted based on electrostatic multipole-multipole interaction and simulated the most energetically preferable molecular arrangement, which agreed well with the observed STM image.
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U2 - 10.1143/JJAP.32.1716
DO - 10.1143/JJAP.32.1716
M3 - Article
AN - SCOPUS:0027573919
SN - 0021-4922
VL - 32
SP - 1716
EP - 1721
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 4 R
ER -