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Ryu, Ja-Hyoung
Supramolecular NanoMaterials Lab (SUN)
Research Interests
  • Supramolecular assembly, synthetic peptide assembly, cancer drug delivery

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Self-assembly of rod-coil molecules into molecular length-dependent organization

Cited 69 times inthomson ciCited 71 times inthomson ci
Title
Self-assembly of rod-coil molecules into molecular length-dependent organization
Other Titles
Self-Assembly of Rod-Coil Molecules into Molecular Length-Dependent Organization
Author
Ja-Hyoung RyuNam-Keun OhWang-Cheol ZinMyongsoo Lee
Issue Date
2004-03
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.126, no.11, pp.3551 - 3558
Abstract
A series of rod-coil molecules (n-x, where n represents the number of repeating units in a PPO coil and x the number of phenyl groups in a rod segment) with variation in the molecular length, but an identical rod to coil volume ratio was synthesized, and their self-assembling behavior was investigated by using DSC and X-ray scatterings. The molecule with a short rod-coil molecule (16-4) shows a 3-D tetragonal structure based on a body-centered symmetry of the discrete bundles in addition to a lamellar structure. This 3-D lattice, on heating, collapses to generate a disordered micellar structure. Remarkably, the molecules based on longer molecular length (21-5 and 24-6) were observed to self-organize into, on heating, lamellar, tetagonally perforated lamellar, 2-D hexagonal columnar and finally disordered micellar structures. Further increase in the molecular length as in the case of 29-7 and 32-8 induces a 3-D hexagonally perforated lamellar structure as an intermediate structure between the lamellar and tetragonally perforated lamellar structures. Consequently, these systems demonstrate the ability to regulate the domain nanostructure, from 2-dimensionally continuous layers, long strips to discrete bundles via periodic perforated layers by small changes in the molecular length, at an identical rod-to-coil volume fraction.
URI
https://scholarworks.unist.ac.kr/handle/201301/12164
URL
http://pubs.acs.org/doi/abs/10.1021/ja039793q
DOI
10.1021/ja039793q
ISSN
0002-7863
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CHM_Journal Papers
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