• Proceedings of the Korea Contents Association Conference
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• 2004.11a
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• pp.554-557
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• 2004

Monolayers of lipids on a water surface have attracted much interest as models of thin films, also as precursors of multilayer systems promising many technical applications. Photoisomerization in monolayers of a novel azobenzene compound, azobenzene dendrimer, was investigated for the first time by means of the absorption spectrum and Maxwell displacement current (MDC) technique. Dendrimers are well-defined macromolecules exhibiting a tree-like structure, first derived by the cascade molecule approach. According to the absorption spectrum, trans-to-cis conversion ratio was estimated to azobenzene dendrimer deposited onto a glass substrate. As a result, It's photoisomerization progressed by dendrimer.

• Journal of Korean Society of Environmental Engineers
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• v.34 no.9
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• pp.613-622
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• 2012

A chrome absorbent that is useful in rapid magnetic recovery and recycling was developed though a synthesis of Multi-Terminalized Magnetic-core Dendrimer (MTMD). Divergence through coprecipitation and rotation growth was used for synthesis. The dendrimer was multi-terminilized through methyl propionate and glutaric acid. The property analysis of the synthesized sample was performed through XRD, FT-IR, TEM, EDS, TGA and zeta potential analyzer. A magnetic-core of MTMD had a magnetite crystal and the size of 4th generation dendrimer was identified to be from 15 nm to 20 nm. Through the analysis of the TGA, the rate of the dendrimer branch for the first generation dendrimer was about 7% and 3% of diminished weight occurred as the generation grows. Also, the potential of the dendrimer when multi-terminalized, had variation from 25.26 mV to -6.53 mV. As a result of MTMD adsorption experiment, it absorbed more than 80% within 5 minutes and indicated absorptivity of 6.308 mg/g. When it was compared with COOH Dendrimer (COOH-D) after magnetic recovery, the recovery time was rapidly reduced by more than half and it could recover 100% within 30 minutes. In case of the regeneration experiment that used chrome, it was identified to maintain the same adsorptivity for four runs.

• Information Display
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• v.13 no.5
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• pp.2-10
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• 2012

• Magazine of the Korea Concrete Institute
• /
• v.2 no.1
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• pp.14-17
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• 1990

• Proceedings of the Optical Society of Korea Conference
• /
• 1998.08a
• /
• pp.148-149
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• 1998

• Proceedings of the Optical Society of Korea Conference
• /
• 1998.08a
• /
• pp.222-223
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• 1998

• the MEAT Journal
• /
• s.36 summer
• /
• pp.87-90
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• 2009

• The tire
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• s.52
• /
• pp.30-31
• /
• 1974

미국의 애치렌, 푸로피렌, 타아포리머어는 2년에 긍한 저속기를 벗어나서 1972년에 크게 늘고 73년도 38.5%의 신장이 있을 것으로 보인다.

• Proceedings of the Optical Society of Korea Conference
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• 1999.08a
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• pp.36-37
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• 1999

• Proceedings of the Optical Society of Korea Conference
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• 1996.09a
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• pp.86-86
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• 1996