Two Dimensional Aggregation Behaviors of Quinoxaline Dendrimers
- Title
- Two Dimensional Aggregation Behaviors of Quinoxaline Dendrimers
- Author
- 이상욱
- Keywords
- Dendrimer; Surface Pressure-Area Isotherm; Langmuir-Blodgett Film; X-Ray Reflectivity
- Issue Date
- 2015-02
- Publisher
- American Scientific Publishers
- Citation
- Journal of Nanoscience and Nanotechnology, v. 15.0, NO. 2, Page. 1511-1514
- Abstract
- This study focuses on the molecular behavior of two dendrimers containing a hydrophilic core group (carboxyl group) and hydrophobic branches (quinoxaline and methoxyphenyl groups), 2,3-bis(4-(2,3-bis(4-methoxyphenyl)quinoxalin-6-yloxy)phenyl)quinoxaline-6-carb-oxylic acid (G2) and 2,3-bis(4-(2,3-bis(4-(2,3-bis(4-methoxyphenyl)quinoxalin-6-yloxy)phe-nyl)quinoxalin-6-yl-oxy)phenyl) quin oxaline-6-carboxylic acid (G3) at the air-water interface. To understand the mechanism of the self-assembly of these molecules, we measured the surface pressure area (Pi-A) isotherm and investigated the surface morphology of Langmuir Blodgett films transferred onto hydrophilic silicon wafers using atomic force microscopy (AFM). Upon compression, G2 molecules stand up and steadily make close-packed monolayer whereas G3 molecules form circular domains and gradually make aggregates of domains. These results were confirmed by the X-ray Reflectivity (XRR) profiles of G2 and G3 monolayers transferred onto silicon substrates.
- URI
- https://www.ingentaconnect.com/content/asp/jnn/2015/00000015/00000002/art00085https://repository.hanyang.ac.kr/handle/20.500.11754/177535
- ISSN
- 1533-4880;1533-4899
- DOI
- 10.1166/jnn.2015.9316
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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