Two Dimensional Aggregation Behaviors of Quinoxaline Dendrimers
- Authors
- Choi, Soyoung; Lee, Hoik; Kim, Hwan Kyu; Lee, Sang Uck; Sohn, Daewon
- Issue Date
- 2월-2015
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Dendrimer; Surface Pressure-Area Isotherm; Langmuir-Blodgett Film; X-Ray Reflectivity
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.15, no.2, pp.1511 - 1514
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 15
- Number
- 2
- Start Page
- 1511
- End Page
- 1514
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/94558
- DOI
- 10.1166/jnn.2015.9316
- ISSN
- 1533-4880
- 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.
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Collections - Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
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