260 0

Formation of a discrete helical assembly and packing pattern through charged hydrogen bonds and van der Waals interactions

Title
Formation of a discrete helical assembly and packing pattern through charged hydrogen bonds and van der Waals interactions
Author
나명수
Keywords
MOLECULAR TECTONICS; CHIRAL TRIS(OXAZOLINE); CIRCULAR-DICHROISM; IONIC INTERACTIONS; LIGAND STRANDS; POLAR-SOLVENTS; NETWORKS; CAPSULE; DESIGN; ACID
Issue Date
2007-01
Publisher
ROYAL SOC CHEMISTRY
Citation
CRYSTENGCOMM, v. 9, No. 1, Page. 78-83
Abstract
We report the selective formation of a self-assembled discrete helical assembly with handedness through charged hydrogen bonds in aqueous solution and solid state. A helical assembly is obtained by simply mixing tris(imidazoline) (1) and (rac)-trans-cyclohexane-1,2-dicarboxylic acid ( 2) in a 2 : 3 ratio in water and methanol. The formation of an ion aggregate is fully supported by NMR, MALDI-TOF mass spectroscopy, and X-ray analysis. Helicity of the 2 : 3 complex is determined by the chirality of 2. For example, (1R, 2R)-trans-cyclohexane-1,2-dicarboxylic acid (2(RR)) induces M helicity in [1(2)(.)2(3)] and vice versa. Each complex is enantiomerically pure as equal amounts of the P and M helical complexes are formed with racemic 2. P- and M-helical assemblies are stacked by turns because PMPM stacking is denser than PP or MM stacking.
URI
https://pubs.rsc.org/en/content/articlehtml/2007/ce/b610512bhttps://repository.hanyang.ac.kr/handle/20.500.11754/106207
ISSN
1466-8033
DOI
10.1039/b610512b
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > ETC
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE