title: Two- and three-dimensional smectic ordering of single-handed helical polymers.
abstract: 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.
authors: 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.
authors: Hisanari
authors: H
authors: Onouchi
authors: Kento
authors: K
authors: Okoshi
authors: Takashi
authors: T
authors: Kajitani
authors: Shin-Ichiro
authors: S
authors: Sakurai
authors: Kanji
authors: K
authors: Nagai
authors: Jiro
authors: J
authors: Kumaki
authors: Kiyotaka
authors: K
authors: Onitsuka
authors: Eiji
authors: E
authors: Yashima
mesh_terms: 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
chemical_list: D000473:Alkanes; D003486:Cyanides; D011108:Polymers; D000409:Alanine