Two- and three-dimensional smectic ordering of single-handed helical polymers.
Rodlike polymers with precisely defined architectures are ideal building blocks for self-assembled structures leading to novel nanometer-scale devices. We found that the living polymerization of a single isocyanide enantiomer bearing an l-alanine pendant with a long n-decyl chain simultaneously produced diastereomeric right- and left-handed helices with different molecular weights and narrow molecular weight distributions. Each single-handed, rodlike helical polymer with a controlled length and handedness isolated by a facile solvent fractionation method with acetone self-assembled to form well-defined two- and three-dimensional smectic ordering on the nanometer scale on a substrate and in a liquid crystalline state as evidenced by direct atomic force microscopic observations and X-ray diffraction measurements, respectively.
Onouchi
Hisanari
H
Yashima Super-structured Helix Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST), 101 Creation Core Nagoya, 2266-22 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-0003, Japan.
Okoshi
Kento
K
Kajitani
Takashi
T
Sakurai
Shin-Ichiro
S
Nagai
Kanji
K
Kumaki
Jiro
J
Onitsuka
Kiyotaka
K
Yashima
Eiji
E
D000409:Alanine / Q000737:chemistry; D000473:Alkanes / Q000737:chemistry; D003486:Cyanides / Q000737:chemistry; D050866:Liquid Crystals; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry
D000473:Alkanes; D003486:Cyanides; D011108:Polymers; D000409:Alanine