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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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Synthesis and supramolecular nanostructure of amphiphilic rigid aromatic-flexible dendritic block molecules

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Title
Synthesis and supramolecular nanostructure of amphiphilic rigid aromatic-flexible dendritic block molecules
Other Titles
Synthesis and Supramolecular Nanostructure of Amphiphilic Rigid Aromatic-Flexible Dendritic Block Molecules
Author
Jang, CJRyu, JHLee, JDSohn, DLee, M
Issue Date
2004-11
Publisher
AMER CHEMICAL SOC
Citation
CHEMISTRY OF MATERIALS, v.16, no.22, pp.4226 - 4231
Abstract
We synthesized ABC triblock rigid aromatic-flexible dendritic block molecules consisting of a docosyl chain, rigid aromatic segment, and poly(ethylene oxide) dendrimer. These block molecules were observed to exhibit an ordered structure in the solid state. Small-angle X-ray scattering experiments showed that the rigid-dendritic block molecule based on a more rodlike aromatic unit self-assembles into a 2-D hexagonal columnar structure, whereas the block molecule based on a more wedgelike aromatic unit self-assembles into a 3-D micellar cubic structure. Dynamic light scatterings, scanning electron microscopic (SEM) observations, and UV/vis spectroscopic measurements were carried out to investigate the encapsulation behavior of hydrophobic guests with the block molecules in an aqueous environment. The rigid-dendritic block molecules self-assemble into stable capsulelike micellar aggregates in aqueous solutions in the presence of CHCl3. In addition, the resulting micellar aggregates encapsulate hydrophobic dye molecules within their micellar core. The critical micellar concentration (cmc) values appeared to be very low, as compared to those of conventional surfactants. These results demonstrate that the introduction of a hydrophilic dendritic segment into an extended rigid aromatic segment can lead to a unique self-assembling system that shows aggregation behavior in both solid and dilute solution phases
URI
https://scholarworks.unist.ac.kr/handle/201301/12160
URL
http://pubs.acs.org/doi/abs/10.1021/cm0492235
DOI
10.1021/cm0492235
ISSN
0897-4756
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CHM_Journal Papers
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